User's Manual
68P81093C75-A 9-7
STATION CONTROL
MODULE (SCM)
STATION ON – GREEN when SCM fully functional
– FLASHING when front panel switch press detected
– OFF for SCM failure
Station Fail – RED for SCM failure
– OFF when SCM fully functional (no failure)
Intcm/Acc D – YELLOW when station is in Intercom mode
– FLASHING when station is in Access Disable mode
– OFF when station is not in Intercom mode
Control Ch – GREEN when station is control channel (trunking systems only)
– FLASHES each time station decodes IWS (
IntelliRepeater
systems only)
Rx 1 Active – GREEN when Station Control Board is passing audio/data (receive path unmuted)
from Receiver #1; The following conditions must be met:
Carrier at proper frequency being received
Carrier signal level is above threshold set in codeplug
Squelch criteria met (carrier, PL, DPL,ASTRO, secure, etc.)
(Note that squelch criteria can be manually altered via RSS for testing
purposes)
– OFF when above conditions are not met for Receiver #1
Rx 2 Active – Unused in PDR 3500
Rx Fail – RED when receiver is non-functional*
– BLINKING ONCE PER SECOND when Receiver #1 is non-functional*
– BLINKING TWICE PER SECOND when Receiver #2 is non-functional* or when
SAM module, or UHSO Module, is non-functional (unused in PDR 3500)
– OFF when RECEIVER is functional* (or no receiver module installed)
*A receive module is considered non-functional if a failure is detected during
diagnostics run at time of power-up, or during normal operation
Aux LED – GREEN LED available for special application function
All LEDs
Flashing On
and Off in
Unison
– Station is in Software download mode, either initiated by the RSS, or due to
software failure.
LEDs
Flashing Up
and Down in
Sequential
Pattern
– Station received software files from RSS and is in process of downloading the
software to FLASH memory in the Station Control Module
WIRELINE
INTERFACE BOARD
(WIB)
WL On – GREEN when WIB fully functional
– OFF for WIB failure
Both LEDs
Blinking
Rapidly
– WIB is in Software Download mode (operating software is being downloaded into
the FLASH memory on WIB from Station Control Module)
Notes
:
1. All LEDs momentarily light following station reset (Volume Up, Volume Down, and Intercom buttons on SCM front panel
pressed simultaneously), or on station power-up.
2. If no LED indicators are on, make sure that AC or DC power to the station power supply is present. If using AC power, check top
panel fuses. Check the circuit breaker at the source. Check the AC or DC line cord. If no problem is found and AC power is used,
suspect the power supply.
Table 11. PDR 3500 LED Indicator Functions (Continued)
LED Location LED Name Status Definition