- <callback>set_frequency_a($frequency_a)</callback>
- <callback>set_frequency_b($frequency_b)</callback>
+ <callback>set_frequency_a($frequency_a#slurp
+#if $lo_offset_a() != float('inf')
+, lo_offset=$lo_offset_a#slurp
+#end if
+)</callback>
+ <callback>set_frequency_b($frequency_b#slurp
+#if $lo_offset_b() != float('inf')
+, lo_offset=$lo_offset_b#slurp
+#end if
+)</callback>