Comtech EF Data Vipersat SLM-5650A, Installation And Operation Manual

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SLM-5650A Satellite Modem
Revision 10
Front Panel Operation 7–4 MN-SLM-5650A
Item Description
IF Lock
• Lights GREEN if the Demodulator has constellation lock.
•
Remains OFF when there is no constellation lock.
Data Lock
• Lights GREEN if the Decoder is locked.
• Remains OFF when there is no Decoder lock.
Remote
• Lights GREEN if the modem is in Remote Communication Mode.
•
Remains OFF when the unit is in Local Mode (remote monitoring is possible,
but there is no remote control).
Test Mode
•
Lights AMBER when a Test Mode (e.g., IF Loopback) is active.
•
Remains OFF when no Test Modes are active.
Encryption ON
• Lights GREEN when Encryption is ENABLED.
• Remains OFF when Encryption is DISABLED.
7.1.3 Vacuum Fluorescent Display (VFD)
The SLM-5650A features a VFD (Item 5 in Figure 7-1). The VFD is an active display showing two
lines of 40 characters each. It produces a blue light with adjustavle brightness. Compared to a
LCD, it has superior viewing characteristics and does not suffer problems of viewing angle or
contrast.
The opening screen displays once you apply power to the unit. The top line ident i fies the unit
model (i.e., Comtech SLM-5650A Modem). The bottom line displays the running Firmware
Version (this number may vary) and the current operating mode for the modem.
Press any key to display the top-level Select menu. On most menu screens, you will see a
flashing, solid-block cursor that blinks at a once-per-second rate. This indicates the currently
selected item, digit, or field:
SELECT: C onfigure Monitor Test
Save/Load Utility (

E)
Where this solid block cursor obscures the item under edit (e.g., a numeric field), the cursor
automatically changes to an underline cursor:
Tx Frequency: 1955.0000 MHz
Spectrum: Normal (

E)