Figure 5-3. Loopback - Comtech EF Data CDM-Qx Installation And Operation Manual

CDM-Qx Satellite Modem
Front Panel Operation
•
BIST Submenu
The Built-In System Test (BIST) specifically refers to the built-in BERT (BER Tester).
Selecting BIST displays:
BIST: BERT-Config
BERT-Control
Selecting BERT-Config displays:
BERT Config: Tx=ON
Tx-Pat=2047 Rx-Pat=2047
If the selected slot is Tx, the Rx parameters are not selectable, and vice-versa. Note the
BERT generator resides at the Tx side while the BERT monitor resides at the Rx side. This
menu allows to turn ON/OFF either the BERT generator or monitor and selects the BERT
pattern as the user may desire. The BERT patterns supported are Space, Mark, 1:1, 1:3,
63, 511, 2047, 2047R (or 2047 alternate), MIL-188, 2^15-1, 2^20-1, and 2^23-1.
IF LOOPBACK
I/O LOOPBACK

Figure 5-3. Loopback

BERT-Mon
(◄ ►, ENT)
Rx=ON
5–52
Revision 6
MN/CDMQx.IOM