Comtech EF Data CDM-500 - Manual (Page 44)

CDM-500 Closed Network Satellite Modem Front Panel Operation
Rev. 1.3 6–15
If the user selects ACTIVE, then a Receive Traffic fault will be generated whenever the
receive circuitry senses that the buffer has either underflowed, or overflowed.
If the user selects MASKED, no alarm will be generated under these conditions.
6.5.41 (CONFIG, MASK) TX-AIS
SEL TX-AIS ALARM MASK:
ACTIVE MASKED(PRESS ENT)
Select ACTIVE or MASKED, using the LEFT/RIGHT arrow keys, then press Enter.
If the user selects ACTIVE, then a Transmit Traffic fault will be generated whenever the
transmit circuitry senses that the ‘all ones’ condition is present in the transmit data.
If the user selects MASKED, no alarm will be generated under these conditions.
6.5.42 (CONFIG) IMPED (IF impedance)
SELECT IF IMPEDANCE:
50 OHMS 75 OHMS (ENTER)
Select 50 ohms or 75 ohms, using the LEFT/RIGHT arrow keys, then press Enter.