evertz 5600ACO2 - Input Indicators; ACO GPI Indicators; Power Supply Indicators; Front Panel Control

Model 5600ACO2 Automatic Changeover Unit
3.1.2. Input Indicators
A INPUTS These twenty green LEDs indicate that the respective input signals from the Master A
device are present and valid. The left most LED will be ON when there are more valid
signals present from the Master A device than the Master B device.
B INPUTS These twenty green LEDs indicate that the respective input signals from the Master B
device are present and valid. The left most LED will be ON when there are more valid
signals present from the Master B device than the Master A device.
The 5600ACO2 determines that an input is present and valid according to the following criteria:
Video: Level above 70 IRE
Sync: H timing detect
SDI: Valid TRS ID
10MHz: Level above 1.0Vp-p
Word Clock: Level above 0.5Vp-p
DARS: Sync word valid
LTC: Level above 0.3Vp-p
Valid sync word
3.1.3. ACO GPI Indicators
IN 1, 2 These green LEDs indicate that the corresponding ACO General Purpose Input is active
or not. The LED will be On when the GPI is active (low).
OUT 1, 2 These green LEDs indicate that the corresponding ACO General Purpose Output is
active or not. The LED will be On when the GPO is active (low).
3.1.4. Power Supply Indicators
PSU STATUS 1, 2 These green LEDs indicate that the corresponding power supply is functioning
normally.
3.2. FRONT PANEL CONTROL
The Changeover can be operated in one of three modes as selected by the three rocker switches on
the front panel.
The 5600ACO2 changeover uses latching relays that retain their state when there is no power applied.
When there is no power applied to the 5600ACO2, GPO2 will be connected to ground indicating a fault
condition.
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Revision 1.3 OPERATION