Intrfc loop back off, Figure 4-7. interface loopback – Comtech EF Data SNM-1001L User Manual
Page 94
SNM-1001L Satellite Modem
Revision 1
Front Panel Operation
MN/SNM1001L.IOM
4–30
FUNCTION SELECT: CONFIGURATION: INTERFACE:
INTRFC LOOP BACK (CONDITIONAL)
INTRFC LOOP BACK
OFF
IMPORTANT
This is a Test Mode. Conditional: This menu is only available when the
overhead interface PCB or Reed-Solomon PCB is installed.
Programs the modem for Interface Loopback operation. When INTERFACE LOOPBACK is
turned on, data is looped back at the modem side of the interface. This is a bi-directional loop
back of the data after the base band data has had the overhead added. Refer to Figure 4-7 for the
interface loopback block diagram.
Upon entry, the current status is displayed. [
↑] or [↓] to make the selection. Press [ENTER] to
execute the change.
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S A T E L L I T E M O D E M
Figure 4-7. Interface Loopback
Note:
When interface loopback is turned on, data is looped back on the modem side of the interface. This test mode will verify the internal
channel unit interface operation.