Operation indicator leds – Grass Valley 8937 v.1.1.0 User Manual
Page 18
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8937/8937D — Instruction Manual
Power Up
Operation Indicator LEDs
(8937) and
(8937D) and
for the name and meaning of each of the board edge LEDs on the
front of the module circuit board. Refer also to
for spe-
cific LED states and module conditions.
Table 2. Board Edge LED Names and Meaning
LED
8937
8937D
Condition
DA 1
DA 2
FAULT
(red)
Off
Off
Off
Normal operation.
On continuously
On
On
Module has detected an internal fault. (Refer to
.)
Long Flash
Long Flash
Long Flash
Input missing or input does not match bit rate set with manual mode.
COMM
(yellow)
Off
Off
Off
No activity on frame communication bus.
Steady flash
Steady flash
Steady flash
Locate Module command received by the module from a remote control system.
Short flash
Short flash
Short flash
Activity present on the frame communication bus.
CONF
(yellow)
Off
Off
Off
Module is in normal operating mode.
On continuously
On
On
Module is initializing, changing operating modes or programming hardware.
PWR
(green)
Off
Off
Off
No power to module or module’s DC/DC converter failed.
On On
On
Normal
operation, module is powered.
SIG PRES
(green)
Off
Off
Off
No signal input detected or input signal does not match bit rate set with Manual mode
On
On
On
In Auto or Bypass mode input signal is present or input signal matches bit rate set with Manual
mode.
BYPASS
(yellow)
Off
Off
Off
Reclocking is enabled and auto-rate detection mode is active
On On
On
Bypass mode is selected (input signal will not be reclocked); Auto mode is selected and input
signal is not present or input signal is not 143 Mb, 177 Mb, 270 Mb, or 360 Mb.
143 Mb
(yellow)
Off
Off
Off
No 143 Mb speed signal present.
On
On
On
Auto Mode: Input signal is locked at 143 Mb, Manual Mode: 143 Mb is present and locked.
177 Mb
(yellow)
Off
Off
Off
No 177 Mb speed signal present.
On
On
On
Auto Mode: Input signal is locked at 177 Mb, Manual Mode: 177 Mb is present and locked.
270 Mb
(yellow)
Off
Off
Off
No 270 Mb speed signal present.
On
On
On
Auto Mode: Input signal is locked at 270 Mb, Manual Mode: 270 Mb is present and locked
360 Mb
(yellow)
Off
Off
Off
No 360 Mb speed signal present.
On
On
On
Auto Mode: Input signal is locked at 360 Mb, Manual Mode: 360 Mb is present and locked
REM OVR
(yellow)
Off
Off
Module setting match those set on module switches and jumpers.
On
On
Remote control is overriding on-board jumper setting on last web page change on either DA 1 or
DA 2 made on module.
1
1
If the module has recognized a remote override on one DA, removing the module and changing a jumper on the other DA and reinserting the module does not change
the status of the REM OVR LED.