Model 5600ACO2 Automatic Changeover Unit
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To ensure proper signal detection and distribution, terminate each sync output
with 75Ω (for example at the input of a distribution amplifier). If a sync output is
double terminated or unterminated (as may be the case when the signals are
directly connected to a patch panel), the 5600ACO2 will hunt for a good input
signal by switching back and forth between input A and B. The flashing LEDs
will indicate the Sync output at fault.
2.4.2. 10 MHz Output
Connect the 10 MHz output of the Master A 5600MSC unit to the A Word Clock/10 MHz input of the
5600ACO2. Connect the 10 MHz output of the Master B 5600MSC unit to the B Word Clock/10 MHz
input of the 5600ACO2. Connect the Word Clock/10 MHz output of the 5600ACO2 to your plant 10
MHz reference system. On early versions of the 5600ACO2 this BNC group was labelled 10 MHz.
2.4.3. Word Clock Output
If your 5600MSC units are fitted with the WC option you will need to make sure that the 5600ACO2 is
fitted with firmware version 1.2 build 1 in order to properly monitor the Word Clock signal. Connect the
Word Clock output of the Master A 5600MSC unit to the A Word Clock/10 MHz input of the 5600ACO2.
Connect the Word Clock output of the Master B 5600MSC unit to the B Word Clock/10 MHz input of the
5600ACO2. Connect the Word Clock/10 MHz output of the 5600ACO2 to your plant Word Clock
distribution amplifier system.
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Some versions of the 5600MSC do not have a direct Word Clock output. On
these units you can derive a Word Clock signal from each master clock by
connecting the DARS output to a 520DARS-W module. The outputs of each of
these modules may then be connected to the appropriate Word Clock/10 MHz
inputs of the 5600ACO2 as described above.
2.4.4. Unbalanced DARS and AES Outputs
If your 5600MSC units are fitted with the STG option, connect the unbalanced DARS and AES outputs
of the Master A 5600MSC unit to the A DARS and AES inputs of the 5600ACO2. Connect the
unbalanced DARS and AES outputs of the Master B 5600MSC unit to the B DARS and AES inputs of
the 5600ACO2. Connect the DARS and AES outputs of the 5600ACO2 to your plant’s unbalanced AES
distribution amplifier system.
2.4.5. Balanced DARS, AES and Analog Audio Outputs
If your 5600MSC units are fitted with the STG option, connect the balanced DARS, AES and analog
audio outputs of the Master A 5600MSC unit to the A DARS, AES and analog audio input terminal strip
of the 5600ACO2. Connect the balanced DARS, AES and analog audio outputs of the Master B
5600MSC unit to the B DARS, AES and analog audio input terminal strip of the 5600ACO2. Connect
the DARS, AES and analog audio output terminal strip of the 5600ACO2 to your plant balanced AES
and analog audio distribution amplifier systems. The cables can be secured into the removable portion
of the terminal strips using a small screwdriver. The removable part of the terminal strip is then
inserted into the rear panel and secured using the hold down screws.
INSTALLATION
Revision 1.3 Page 2-5
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