From: Keith Packard Date: Thu, 25 Aug 2011 03:42:09 +0000 (-0700) Subject: doc: Spelling corrections in altusmetrum.xsl X-Git-Tag: 1.0~22 X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=ca0879ba6e5295b4fa790705f742eb647a462ea0 doc: Spelling corrections in altusmetrum.xsl Lots of minor spelling errors. Signed-off-by: Keith Packard --- diff --git a/doc/altusmetrum.xsl b/doc/altusmetrum.xsl index 9c13bd89..ddb40719 100644 --- a/doc/altusmetrum.xsl +++ b/doc/altusmetrum.xsl @@ -67,7 +67,7 @@ Kit" which has turned into the Getting Started chapter in this book. Bob was one of our first customers for a production TeleMetrum, and the enthusiasm that led to his contribution of - this section is immensely gratifying and highy appreciated! + this section is immensely gratifying and highly appreciated! And thanks to Anthony (AJ) Towns for contributing the @@ -107,7 +107,7 @@ NAR #88757, TRA #12200 The newest device is TeleMini, a dual deploy altimeter with radio telemetry and radio direction finding. This device is only - 13mm by 38mm (½ inch by 1½ inches) and can fit easily in an 18mm airframe. + 13mm by 38mm (½ inch by 1½ inches) and can fit easily in an 18mm air-frame. Complementing TeleMetrum and TeleMini is TeleDongle, a USB to RF interface for @@ -133,7 +133,7 @@ NAR #88757, TRA #12200 The TeleMetrum battery can be charged by plugging it into the corresponding socket of the TeleMetrum and then using the USB A to mini B - cable to plug the Telemetrum into your computer's USB socket. The + cable to plug the TeleMetrum into your computer's USB socket. The TeleMetrum circuitry will charge the battery whenever it is plugged in, because the TeleMetrum's on-off switch does NOT control the charging circuitry. @@ -141,7 +141,7 @@ NAR #88757, TRA #12200 When the GPS chip is initially searching for satellites, TeleMetrum will consume more current than it can pull - from the usb port, so the battery must be attached in order to get + from the USB port, so the battery must be attached in order to get satellite lock. Once GPS is locked, the current consumption goes back down enough to enable charging while running. So it's a good idea to fully charge the battery as your @@ -172,7 +172,7 @@ NAR #88757, TRA #12200 the AltosUI ground station program, current firmware images for TeleMetrum, TeleMini and TeleDongle, and a number of standalone utilities that are rarely needed. Pre-built binary packages are available for Debian - Linux, Microsoft Windows, and recent MacOSX versions. Full sourcecode + Linux, Microsoft Windows, and recent MacOSX versions. Full source code and build instructions for some other Linux variants are also available. The latest version may always be downloaded from . @@ -182,7 +182,7 @@ NAR #88757, TRA #12200 Handling Precautions All Altus Metrum products are sophisticated electronic devices. - When handled gently and properly installed in an airframe, they + When handled gently and properly installed in an air-frame, they will deliver impressive results. However, like all electronic devices, there are some precautions you must take. @@ -194,7 +194,7 @@ NAR #88757, TRA #12200 or their leads are allowed to short, they can and will release their energy very rapidly! Thus we recommend that you take some care when handling our batteries - and consider giving them some extra protection in your airframe. We + and consider giving them some extra protection in your air-frame. We often wrap them in suitable scraps of closed-cell packing foam before strapping them down, for example. @@ -204,7 +204,7 @@ NAR #88757, TRA #12200 and all of the other surface mount components are "down" towards whatever the underlying mounting surface is, so this is not normally a problem. Please consider this, though, when - designing an installation, for example, in an airframe with a + designing an installation, for example, in an air-frame with a see-through plastic payload bay. It is particularly important to consider this with TeleMini, both because the baro sensor is on the "top" of the board, and because many model rockets with payload bays @@ -229,7 +229,7 @@ NAR #88757, TRA #12200 Hardware Overview TeleMetrum is a 1 inch by 2.75 inch circuit board. It was designed to - fit inside coupler for 29mm airframe tubing, but using it in a tube that + fit inside coupler for 29mm air-frame tubing, but using it in a tube that small in diameter may require some creativity in mounting and wiring to succeed! The default 1/4 wave UHF wire antenna attached to the center of the nose-cone end of @@ -240,7 +240,7 @@ NAR #88757, TRA #12200 TeleMini is a 0.5 inch by 1.5 inch circuit board. It was designed to - fit inside an 18mm airframe tube, but using it in a tube that + fit inside an 18mm air-frame tube, but using it in a tube that small in diameter may require some creativity in mounting and wiring to succeed! The default 1/4 wave UHF wire antenna attached to the center of the nose-cone end of @@ -257,7 +257,7 @@ NAR #88757, TRA #12200 charges. - By default, we use the unregulated output of the LiPo battery directly + By default, we use the unregulated output of the Li-Po battery directly to fire ejection charges. This works marvelously with standard low-current e-matches like the J-Tek from MJG Technologies, and with Quest Q2G2 igniters. However, if you @@ -279,7 +279,7 @@ NAR #88757, TRA #12200 directly to the board and can be connected directly to the switch. - For most airframes, the integrated antennas are more than + For most air-frames, the integrated antennas are more than adequate However, if you are installing in a carbon-fiber electronics bay which is opaque to RF signals, you may need to use off-board external antennas instead. In this case, you can @@ -296,7 +296,7 @@ NAR #88757, TRA #12200 The AltOS firmware build for the altimeters has two fundamental modes, "idle" and "flight". Which of these modes - the firmware operates in is determined at startup time. For + the firmware operates in is determined at start up time. For TeleMetrum, the mode is controlled by the orientation of the rocket (well, actually the board, of course...) at the time power is switched on. If the rocket is "nose up", then @@ -310,7 +310,7 @@ NAR #88757, TRA #12200 At power on, you will hear three beeps or see three flashes - ("S" in Morse code for startup) and then a pause while + ("S" in Morse code for start up) and then a pause while the altimeter completes initialization and self tests, and decides which mode to enter next. @@ -342,9 +342,9 @@ NAR #88757, TRA #12200 One "neat trick" of particular value when the altimeter is used with very - large airframes, is that you can power the board up while the rocket + large air-frames, is that you can power the board up while the rocket is horizontal, such that it comes up in idle mode. Then you can - raise the airframe to launch position, use a TeleDongle to open + raise the air-frame to launch position, use a TeleDongle to open a packet connection, and issue a 'reset' command which will cause the altimeter to reboot and come up in flight mode. This is much safer than standing on the top step of a @@ -364,11 +364,11 @@ NAR #88757, TRA #12200 what time it is! - TeleMetrum provides backup power to the GPS chip any time a LiPo + TeleMetrum provides backup power to the GPS chip any time a Li-Po battery is connected. This allows the receiver to "warm start" on the launch rail much faster than if every power-on were a "cold start" for the GPS receiver. In typical operations, powering up TeleMetrum - on the flight line in idle mode while performing final airframe + on the flight line in idle mode while performing final air-frame preparation will be sufficient to allow the GPS receiver to cold start and acquire lock. Then the board can be powered down during RSO review and installation on a launch rod or rail. When the board @@ -389,7 +389,7 @@ NAR #88757, TRA #12200 Just prep the rocket for flight, then power up the altimeter - in "idle" mode (placing airframe horizontal for TeleMetrum or + in "idle" mode (placing air-frame horizontal for TeleMetrum or starting the RF packet connection for TeleMini). This will cause the firmware to go into "idle" mode, in which the normal flight state machine is disabled and charges will not fire without @@ -421,7 +421,7 @@ NAR #88757, TRA #12200 it's in "idle mode", which allows us to use the RF link to configure the rocket, do things like ejection tests, and extract data after a flight without having to - crack open the airframe. However, when the board is in "flight + crack open the air-frame. However, when the board is in "flight mode", the altimeter only transmits and doesn't listen at all. That's because we want to put ultimate priority on event detection and getting telemetry out of @@ -432,7 +432,7 @@ NAR #88757, TRA #12200 We don't use a 'normal packet radio' mode because they're just too inefficient. The GFSK modulation we use is just FSK with the - baseband pulses passed through a + base-band pulses passed through a Gaussian filter before they go into the modulator to limit the transmitted bandwidth. When combined with the hardware forward error correction support in the cc1111 chip, this allows us to have a very @@ -471,7 +471,7 @@ NAR #88757, TRA #12200 To set the radio frequency, use the 'c R' command to specify the radio transceiver configuration parameter. This parameter is computed using the desired frequency, 'F', the radio calibration parameter, 'C' (showed by the 'c s' command) and - the standard calibration reference frequency, 'S', (normally 434.550Mhz): + the standard calibration reference frequency, 'S', (normally 434.550MHz): R = F / S * C @@ -504,7 +504,7 @@ NAR #88757, TRA #12200 set the MAWD to 0 seconds delay and set the TeleMetrum to fire your backup 2 or 3 seconds later to avoid any chance of both charges firing simultaneously. We've flown several - airframes this way quite happily, including Keith's + air-frames this way quite happily, including Keith's successful L3 cert. @@ -513,7 +513,7 @@ NAR #88757, TRA #12200 By default, the altimeter will fire the main deployment charge at an elevation of 250 meters (about 820 feet) above ground. We think this - is a good elevation for most airframes, but feel free to change this + is a good elevation for most air-frames, but feel free to change this to suit. In particular, if you are flying two altimeters, you may wish to set the deployment elevation for the backup altimeter to be something lower @@ -536,7 +536,7 @@ NAR #88757, TRA #12200
Radio Frequency - The radio frequency is synthesized from a clock based on the 48 Mhz + The radio frequency is synthesized from a clock based on the 48 MHz crystal on the board. The actual frequency of this oscillator must be measured to generate a calibration constant. While our GFSK modulation bandwidth is wide enough to allow boards to communicate even when @@ -552,7 +552,7 @@ NAR #88757, TRA #12200 frequency counter, set the board to 434.550MHz, and use the 'C' command to generate a CW carrier. Wait for the transmitter temperature to stabilize and the frequency to settle down. - Then, divide 434.550 Mhz by the + Then, divide 434.550 MHz by the measured frequency and multiply by the current radio cal value show in the 'c s' command. For an unprogrammed board, the default value is 1186611. Take the resulting integer and program it using the 'c f' @@ -571,10 +571,10 @@ NAR #88757, TRA #12200
TeleMetrum Accelerometer - The TeleMerum accelerometer we use has its own 5 volt power supply and + The TeleMetrum accelerometer we use has its own 5 volt power supply and the output must be passed through a resistive voltage divider to match the input of our 3.3 volt ADC. This means that unlike the barometric - sensor, the output of the acceleration sensor is not ratiometric to + sensor, the output of the acceleration sensor is not ratio-metric to the ADC converter, and calibration is required. We also support the use of any of several accelerometers from a Freescale family that includes at least +/- 40g, 50g, 100g, and 200g parts. Using gravity, @@ -686,7 +686,7 @@ NAR #88757, TRA #12200 the TeleMetrum with new firmware, showing a progress bar. - Confirm that the TeleMetrum board seems to have updated ok, which you + Confirm that the TeleMetrum board seems to have updated OK, which you can do by plugging in to it over USB and using a terminal program to connect to the board and issue the 'v' command to check the version, etc. @@ -748,7 +748,7 @@ NAR #88757, TRA #12200 the TeleMini with new firmware, showing a progress bar. - Confirm that the TeleMini board seems to have updated ok, which you + Confirm that the TeleMini board seems to have updated OK, which you can do by configuring it over the RF link through the TeleDongle, or letting it come up in "flight" mode and listening for telemetry. @@ -818,7 +818,7 @@ NAR #88757, TRA #12200 the TeleDongle with new firmware, showing a progress bar. - Confirm that the TeleDongle board seems to have updated ok, which you + Confirm that the TeleDongle board seems to have updated OK, which you can do by plugging in to it over USB and using a terminal program to connect to the board and issue the 'v' command to check the version, etc. Once you're happy, remove the programming cable @@ -870,7 +870,7 @@ NAR #88757, TRA #12200 The radio frequency being monitored by the TeleDongle device is displayed at the top of the window. You can configure the - frequecy by clicking on the frequency box and selecting the desired + frequency by clicking on the frequency box and selecting the desired frequency. AltosUI remembers the last frequency selected for each TeleDongle and selects that automatically the next time you use that device. @@ -882,7 +882,7 @@ NAR #88757, TRA #12200 - The configured callsign + The configured call-sign The device serial number @@ -904,7 +904,7 @@ NAR #88757, TRA #12200 The Received Signal Strength Indicator value. This lets you know how strong a signal TeleDongle is receiving. The radio inside TeleDongle operates down to about -99dBm; - weaker signals may not be receiveable. The packet link uses + weaker signals may not be receivable. The packet link uses error correction and detection techniques which prevent incorrect data from being reported. @@ -929,7 +929,7 @@ NAR #88757, TRA #12200 - Battery Voltage. This indicates whether the LiPo battery + Battery Voltage. This indicates whether the Li-Po battery powering the TeleMetrum has sufficient charge to last for the duration of the flight. A value of more than 3.7V is required for a 'GO' status. @@ -940,7 +940,7 @@ NAR #88757, TRA #12200 Apogee Igniter Voltage. This indicates whether the apogee igniter has continuity. If the igniter has a low resistance, then the voltage measured here will be close - to the LiPo battery voltage. A value greater than 3.2V is + to the Li-Po battery voltage. A value greater than 3.2V is required for a 'GO' status. @@ -949,7 +949,7 @@ NAR #88757, TRA #12200 Main Igniter Voltage. This indicates whether the main igniter has continuity. If the igniter has a low resistance, then the voltage measured here will be close - to the LiPo battery voltage. A value greater than 3.2V is + to the Li-Po battery voltage. A value greater than 3.2V is required for a 'GO' status. @@ -970,7 +970,7 @@ NAR #88757, TRA #12200 - The LaunchPad tab also shows the computed launch pad position + The Launchpad tab also shows the computed launch pad position and altitude, averaging many reported positions to improve the accuracy of the fix. @@ -985,7 +985,7 @@ NAR #88757, TRA #12200 The height, speed and acceleration are shown along with the - maxium values for each of them. This allows you to quickly + maximum values for each of them. This allows you to quickly answer the most commonly asked questions you'll hear during flight. @@ -1044,7 +1044,7 @@ NAR #88757, TRA #12200 latitude and longitude as well as a bearing and distance from the launch pad. The distance should give you a good idea of whether you'll want to walk or hitch a ride. Take the reported - latitude and longitude and enter them into your handheld GPS + latitude and longitude and enter them into your hand-held GPS unit and have that compute a track to the landing location. @@ -1070,19 +1070,19 @@ NAR #88757, TRA #12200 When the TeleMetrum gets a GPS fix, the Site Map tab will map the rocket's position to make it easier for you to locate the rocket, both while it is in the air, and when it has landed. The - rocket's state is indicated by colour: white for pad, red for + rocket's state is indicated by color: white for pad, red for boost, pink for fast, yellow for coast, light blue for drogue, dark blue for main, and black for landed. The map's scale is approximately 3m (10ft) per pixel. The map can be dragged using the left mouse button. The map will attempt - to keep the rocket roughly centred while data is being received. + to keep the rocket roughly centered while data is being received. Images are fetched automatically via the Google Maps Static API, and are cached for reuse. If map images cannot be downloaded, - the rocket's path will be traced on a dark grey background + the rocket's path will be traced on a dark gray background instead. @@ -1135,7 +1135,7 @@ NAR #88757, TRA #12200 to respond to changing launch conditions. You can also 'reboot' the altimeter. Use this to remotely enable the flight computer by turning TeleMetrum on in "idle" mode, - then once the airframe is oriented for launch, you can + then once the air-frame is oriented for launch, you can reboot the altimeter and have it restart in pad mode without having to climb the scary ladder. @@ -1143,7 +1143,7 @@ NAR #88757, TRA #12200 Fire Igniters—Test your deployment charges without snaking - wires out through holes in the airframe. Simply assembly the + wires out through holes in the air-frame. Simply assembly the rocket as if for flight with the apogee and main charges loaded, then remotely command the altimeter to fire the igniters. @@ -1210,7 +1210,7 @@ NAR #88757, TRA #12200 data will be recorded for a flight. - The filename for each flight log is computed automatically + The file name for each flight log is computed automatically from the recorded flight date, altimeter serial number and flight number information. @@ -1252,7 +1252,7 @@ NAR #88757, TRA #12200 dragging down and to the right. Once zoomed, the graph can be reset by clicking and dragging up and to the left. Holding down control and clicking and dragging allows the graph to be panned. - The right mouse button causes a popup menu to be displayed, giving + The right mouse button causes a pop-up menu to be displayed, giving you the option save or print the plot. @@ -1306,7 +1306,7 @@ NAR #88757, TRA #12200 Select this button and then select either a TeleMetrum or TeleDongle Device from the list provided. Selecting a TeleDongle - device will use Packet Comamnd Mode to configure a remote + device will use Packet Command Mode to configure a remote altimeter. Learn how to use this in the Packet Command Mode chapter. @@ -1366,8 +1366,8 @@ NAR #88757, TRA #12200 When flying redundant electronics, it's often important to ensure that multiple apogee charges don't fire at precisely - the same time as that can overpressurize the apogee deployment - bay and cause a structural failure of the airframe. The Apogee + the same time as that can over pressurize the apogee deployment + bay and cause a structural failure of the air-frame. The Apogee Delay parameter tells the flight computer to fire the apogee charge a certain number of seconds after apogee has been detected. @@ -1396,7 +1396,7 @@ NAR #88757, TRA #12200
Callsign - This sets the callsign included in each telemetry packet. Set this + This sets the call sign included in each telemetry packet. Set this as needed to conform to your local radio regulations.
@@ -1504,7 +1504,7 @@ NAR #88757, TRA #12200
Voice Settings - AltosUI provides voice annoucements during flight so that you + AltosUI provides voice announcements during flight so that you can keep your eyes on the sky and still get information about the current flight status. However, sometimes you don't want to hear them. @@ -1516,7 +1516,7 @@ NAR #88757, TRA #12200 Test Voice—Plays a short message allowing you to verify - that the audio systme is working and the volume settings + that the audio system is working and the volume settings are reasonable @@ -1542,7 +1542,7 @@ NAR #88757, TRA #12200 in each packet sent from TeleDongle and received from TeleMetrum. It is not used in telemetry mode as that transmits packets only from TeleMetrum to TeleDongle. Configure this - with the AltosUI operators callsign as needed to comply with + with the AltosUI operators call sign as needed to comply with your local radio regulations.
@@ -1621,13 +1621,13 @@ NAR #88757, TRA #12200 recovery systems deployment. Because this command can operate over the Packet Command Link, you can prepare the rocket as for flight and then test the recovery system without needing - to snake wires inside the airframe. + to snake wires inside the air-frame. Selecting the 'Fire Igniter' button brings up the usual device selection dialog. Pick the desired TeleDongle or TeleMetrum device. This brings up another window which shows the current - continutity test status for both apogee and main charges. + continuity test status for both apogee and main charges. Next, select the desired igniter to fire. This will enable the @@ -1703,14 +1703,14 @@ NAR #88757, TRA #12200 In the rocket itself, you just need a TeleMetrum or TeleMini board and - a LiPo rechargeable battery. An 860mAh battery weighs less than a 9V + a Li-Po rechargeable battery. An 860mAh battery weighs less than a 9V alkaline battery, and will run a TeleMetrum for hours. A 110mAh battery weighs less than a triple A battery and will run a TeleMetrum for a few hours, or a TeleMini for much (much) longer. By default, we ship the altimeters with a simple wire antenna. If your - electronics bay or the airframe it resides within is made of carbon fiber, + electronics bay or the air-frame it resides within is made of carbon fiber, which is opaque to RF signals, you may choose to have an SMA connector installed so that you can run a coaxial cable to an antenna mounted elsewhere in the rocket. @@ -1720,7 +1720,7 @@ NAR #88757, TRA #12200 On the Ground To receive the data stream from the rocket, you need an antenna and short - feedline connected to one of our TeleDongle units. The + feed-line connected to one of our TeleDongle units. The TeleDongle in turn plugs directly into the USB port on a notebook computer. Because TeleDongle looks like a simple serial port, your computer does not require special device drivers... just plug it in. @@ -1734,15 +1734,15 @@ NAR #88757, TRA #12200 After the flight, you can use the RF link to extract the more detailed data logged in either TeleMetrum or TeleMini devices, or you can use a mini USB cable to plug into the TeleMetrum board directly. Pulling out the data without having to open up - the rocket is pretty cool! A USB cable is also how you charge the LiPo + the rocket is pretty cool! A USB cable is also how you charge the Li-Po battery, so you'll want one of those anyway... the same cable used by lots of digital cameras and other modern electronic stuff will work fine. - If your TeleMetrum-equiped rocket lands out of sight, you may enjoy having a hand-held GPS - receiver, so that you can put in a waypoint for the last reported rocket + If your TeleMetrum-equipped rocket lands out of sight, you may enjoy having a hand-held GPS + receiver, so that you can put in a way-point for the last reported rocket position before touch-down. This makes looking for your rocket a lot like - Geo-Cacheing... just go to the waypoint and look around starting from there. + Geo-Caching... just go to the way-point and look around starting from there. You may also enjoy having a ham radio "HT" that covers the 70cm band... you @@ -1757,7 +1757,7 @@ NAR #88757, TRA #12200 So, to recap, on the ground the hardware you'll need includes: - an antenna and feedline + an antenna and feed-line a TeleDongle @@ -1766,10 +1766,10 @@ NAR #88757, TRA #12200 a notebook computer - optionally, a handheld GPS receiver + optionally, a hand-held GPS receiver - optionally, an HT or receiver covering 435 Mhz + optionally, an HT or receiver covering 435 MHz @@ -1789,12 +1789,12 @@ NAR #88757, TRA #12200 Our software makes it easy to log the data from each flight, both the telemetry received over the RF link during the flight itself, and the more complete data log recorded in the flash memory on the altimeter - board. Once this data is on your computer, our postflight tools make it + board. Once this data is on your computer, our post-flight tools make it easy to quickly get to the numbers everyone wants, like apogee altitude, max acceleration, and max velocity. You can also generate and view a standard set of plots showing the altitude, acceleration, and velocity of the rocket during flight. And you can even export a TeleMetrum data file - useable with Google Maps and Google Earth for visualizing the flight path + usable with Google Maps and Google Earth for visualizing the flight path in two or three dimensions! @@ -1832,15 +1832,15 @@ NAR #88757, TRA #12200 Building high-power rockets that fly safely is hard enough. Mix in some sophisticated electronics and a bunch of radio energy and oftentimes you find few perfect solutions. This chapter - contains some suggestions about how to install AltusMetrum - products into the rocket airframe, including how to safely and - reliably mix a variety of electronics into the same airframe. + contains some suggestions about how to install Altus Metrum + products into the rocket air-frame, including how to safely and + reliably mix a variety of electronics into the same air-frame.
Mounting the Altimeter The first consideration is to ensure that the altimeter is - securely fastened to the airframe. For TeleMetrum, we use + securely fastened to the air-frame. For TeleMetrum, we use nylon standoffs and nylon screws; they're good to at least 50G and cannot cause any electrical issues on the board. For TeleMini, we usually cut small pieces of 1/16" balsa to fit @@ -1868,7 +1868,7 @@ NAR #88757, TRA #12200 wire. If it gets damaged or broken, it can be easily replaced. It should be kept straight and not cut; bending or cutting it will change the resonant frequency and/or - impedence, making it a less efficient radiator and thus + impedance, making it a less efficient radiator and thus reducing the range of the telemetry signal. @@ -1881,10 +1881,10 @@ NAR #88757, TRA #12200 Make sure the antenna is not inside a tube made or covered - with conducting material. Carbon fibre is the most common + with conducting material. Carbon fiber is the most common culprit here -- CF is a good conductor and will effectively shield the antenna, dramatically reducing signal strength and - range. Metalic flake paint is another effective shielding + range. Metallic flake paint is another effective shielding material which is to be avoided around any antennas. @@ -1924,7 +1924,7 @@ NAR #88757, TRA #12200 Conductive tubing or coatings. Carbon fiber and metal - tubing, or metalic paint will all dramatically attenuate the + tubing, or metallic paint will all dramatically attenuate the GPS signal. We've never heard of anyone successfully receiving GPS from inside these materials. @@ -2002,7 +2002,7 @@ NAR #88757, TRA #12200 To accurately measure atmospheric pressure, the ebay containing the altimeter must be vented outside the - airframe. The vent must be placed in a region of linear + air-frame. The vent must be placed in a region of linear airflow, smooth and not in an area of increasing or decreasing pressure. @@ -2017,7 +2017,7 @@ NAR #88757, TRA #12200 Ground Testing The most important aspect of any installation is careful - ground testing. Bringing an airframe up to the LCO table which + ground testing. Bringing an air-frame up to the LCO table which hasn't been ground tested can lead to delays or ejection charges firing on the pad, or, even worse, a recovery system failure. @@ -2027,16 +2027,16 @@ NAR #88757, TRA #12200 without any BP and turning on all of the electronics in flight mode. This will catch any mistakes in wiring and any residual RFI issues that might accidentally fire igniters at the wrong - time. Let the airframe sit for several minutes, checking for + time. Let the air-frame sit for several minutes, checking for adequate telemetry signal strength and GPS lock. Ground test the ejection charges. Prepare the rocket for flight, loading ejection charges and igniters. Completely - assemble the airframe and then use the 'Fire Igniters' + assemble the air-frame and then use the 'Fire Igniters' interface through a TeleDongle to command each charge to fire. Make sure the charge is sufficient to robustly separate - the airframe and deploy the recovery system. + the air-frame and deploy the recovery system.
@@ -2057,7 +2057,7 @@ NAR #88757, TRA #12200 - 70cm ham-band transceiver for telemetry downlink. + 70cm ham-band transceiver for telemetry down-link. @@ -2073,7 +2073,7 @@ NAR #88757, TRA #12200 - On-board, integrated GPS receiver with 5hz update rate capability. + On-board, integrated GPS receiver with 5Hz update rate capability. @@ -2088,18 +2088,18 @@ NAR #88757, TRA #12200 - Fully integrated support for LiPo rechargeable batteries. + Fully integrated support for Li-Po rechargeable batteries. - Uses LiPo to fire e-matches, can be modiied to support + Uses Li-Po to fire e-matches, can be modified to support optional separate pyro battery if needed. - 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube. + 2.75 x 1 inch board designed to fit inside 29mm air-frame coupler tube. @@ -2119,7 +2119,7 @@ NAR #88757, TRA #12200 - 70cm ham-band transceiver for telemetry downlink. + 70cm ham-band transceiver for telemetry down-link. @@ -2139,18 +2139,18 @@ NAR #88757, TRA #12200 - Support for LiPo rechargeable batteries, using an external charger. + Support for Li-Po rechargeable batteries, using an external charger. - Uses LiPo to fire e-matches, can be modiied to support + Uses Li-Po to fire e-matches, can be modified to support optional separate pyro battery if needed. - 1.5 x .5 inch board designed to fit inside 18mm airframe coupler tube. + 1.5 x .5 inch board designed to fit inside 18mm air-frame coupler tube. @@ -2185,7 +2185,7 @@ NAR #88757, TRA #12200 There are no "dit-dah-dah-dit" sound or lights like the manual mentions? That's the "pad" mode. Weak batteries might be the problem. - It is also possible that the Telemetrum is horizontal and the output + It is also possible that the TeleMetrum is horizontal and the output is instead a "dit-dit" meaning 'idle'. For TeleMini, it's possible that it received a command packet which would have left it in "pad" mode. @@ -2196,8 +2196,8 @@ NAR #88757, TRA #12200 but is easily changed using the menus in AltosUI. The files that are written end in '.telem'. The after-flight data-dumped files will end in .eeprom and represent continuous data - unlike the rf-linked .telem files that are subject to losses - along the rf data path. + unlike the RF-linked .telem files that are subject to losses + along the RF data path. See the above instructions on what and how to save the eeprom stored data after physically retrieving your altimeter. Make sure to save the on-board data after each flight; while the TeleMetrum can store @@ -2217,9 +2217,9 @@ NAR #88757, TRA #12200 - Both Telemetrum and TeleDongle can be directly communicated + Both TeleMetrum and TeleDongle can be directly communicated with using USB ports. The first thing you should try after getting - both units plugged into to your computer's usb port(s) is to run + both units plugged into to your computer's USB port(s) is to run 'ao-list' from a terminal-window to see what port-device-name each device has been assigned by the operating system. You will need this information to access the devices via their @@ -2267,7 +2267,7 @@ NAR #88757, TRA #12200 for these options and so they'll all be lost when you unplug it. - Try setting these config ('c' or second level menu) values. A good + Try setting these configuration ('c' or second level menu) values. A good place to start is by setting your call sign. By default, the boards use 'N0CALL' which is cute, but not exactly legal! Spend a few minutes getting comfortable with the units, their @@ -2284,7 +2284,7 @@ NAR #88757, TRA #12200 A fun thing to do at the launch site and something you can do while - learning how to use these units is to play with the rf-link access + learning how to use these units is to play with the RF-link access between an altimeter and the TeleDongle. Be aware that you *must* create some physical separation between the devices, otherwise the link will not function due to signal overload in the receivers in each device. @@ -2298,29 +2298,29 @@ NAR #88757, TRA #12200 of being powered up, otherwise it enters "pad" mode. - You can access an altimeter in idle mode from the Teledongle's USB - connection using the rf link + You can access an altimeter in idle mode from the TeleDongle's USB + connection using the RF link by issuing a 'p' command to the TeleDongle. Practice connecting and disconnecting ('~~' while using 'cu') from the altimeter. If you cannot escape out of the "p" command, (by using a '~~' when in CU) then it is likely that your kernel has issues. Try a newer version. - Using this rf link allows you to configure the altimeter, test + Using this RF link allows you to configure the altimeter, test fire e-matches and igniters from the flight line, check pyro-match continuity and so forth. You can leave the unit turned on while it is in 'idle mode' and then place the rocket vertically on the launch pad, walk away and then issue a reboot command. The altimeter will reboot and start sending data having changed to the "pad" mode. If the TeleDongle is not receiving - this data, you can disconnect 'cu' from the Teledongle using the + this data, you can disconnect 'cu' from the TeleDongle using the procedures mentioned above and THEN connect to the TeleDongle from inside 'ao-view'. If this doesn't work, disconnect from the TeleDongle, unplug it, and try again after plugging it back in. On TeleMetrum, the GPS will eventually find enough satellites, lock in on them, - and 'ao-view' will both auditorially announce and visually indicate + and 'ao-view' will both auditorily announce and visually indicate that GPS is ready. Now you can launch knowing that you have a good data path and good satellite lock for flight data and recovery. Remember @@ -2343,9 +2343,9 @@ NAR #88757, TRA #12200 contents using either 'ao-dumplog' (or possibly 'ao-eeprom'), over either a USB cable or over the radio link using TeleDongle. And by following the man page for 'ao-postflight' you can create - various data output reports, graphs, and even kml data to see the - flight trajectory in google-earth. (Moving the viewing angle making - sure to connect the yellow lines while in google-earth is the proper + various data output reports, graphs, and even KML data to see the + flight trajectory in Google-earth. (Moving the viewing angle making + sure to connect the yellow lines while in Google-earth is the proper technique.) @@ -2368,3 +2368,6 @@ NAR #88757, TRA #12200 + +