Grass-valley 8937 v.1.1.0 User Manual download pdf (Page 18)

18 8937/8937D — Instruction Manual

Power Up

Operation Indicator LEDs

Refer to Figure 7 on page 17 (8937) and Figure 8 on page 17 (8937D) and

Table 2 for the name and meaning of each of the board edge LEDs on the

front of the module circuit board. Refer also to Table 3 on page 19 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 Service on page 42.)

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.

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.

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Grass-valley 8937 v.1.1.0 User Manual Page 18

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