974-72007001/1.0 1007D Altimeter Operators Manual
Page 30 Telemetr
Kongsberg Mesotech Ltd.
Port Coquitlam, BC - Canada
The NMEA string output contains fields for all three
units but only the field corresponding to the selected
units setting will contain altitude data.
'T'x – Select Transmit Gate
where x is one of:
'0' none (listen only)
'1' XMIT1 (normal operation)
'2' XMIT2 (for factory test only)
'3' XMIT1 + XMIT2 (for factory test only)
'4' FTX (for factory test only)
This command is for factory testing and must always
be set to '1' for normal operation.
'U'xx or 'U'-xx – Set TVG Gain Offset
where xx = '-99'…'99' is the offset in 0.5dB units.
This command applies a fixed gain adjustment on the
received signal to allow the operator to manually
increase or decrease the gain. It is effective in both
the manual and automatic gain modes. In automatic
gain mode however, the 1007D may reduce the
effects of the entered offset since it adds in additional
offset determined by the actual acoustic signal level.
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