Comtech EF Data CDM-600/600L - Manual (Page 260)

CDM-600/600L Open Network Satellite Modem Revision 3
Appendix G MN/CDM600L.IOM
G–2
recent requested state by the IDU. The carrier enable/disable function is implemented by switching
On/Off the switched regulators of the BUC amplifier chains (a “sleep mode”).
The BUC is equipped with a calibrated power sensor for measuring the power delivered to the
antenna for rated output to 20 dB backed off. This value, in dBm, is available via the M&C for
power level monitoring and AGC.
Refer to BUC manufacturer specifications for reported power accuracy.
G.1.1 Transmission Interface
Each transmitted data packet consists of 7 bytes of information. The BUC only accepts a command
if the first data byte contains the appropriate address. Commands are only executed if the checksum
coincides, but a status response is sent if the address is correct and the command number is within
the valid range.