Comtech EF Data CDM-500 Specifications download pdf (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.

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Comtech EF Data CDM-500 Specifications Page 44