Grass Valley EFP1685 - Manuel (Page 154)

154 Chapter 2 - Installation
Adaptation to main and secondary antenna indications in the cCU
B1685902AC
September 2000
THOMSON EFP1685 / CCU1686
User manual
2.8 - ADAPTATION TO MAIN AND SECONDARY ANTENNA
INDICATIONS IN THE CCU
The main antenna "ON AIR 1" and secondary antenna "ON AIR 2" controls received from
the Channel Control Unit can be of two different forms:
• a DC voltage of between + 12 and + 48 V,
• a closed loop (contact).
2.8.1 - APCM version 0 board
Depending on the type of control coming from the Mixer, set straps E10, E11 (ON AIR 1)
and E12, E13 (ON AIR 2) to the positions shown in the table below.
"APCM" version 0 PCB
ON AIR 1 ON AIR 2
Control E10 - E11 Control E12 - E13
+ 12 V Voltage + 12 V Voltage
+ 24 V Voltage + 24 V Voltage
+ 48 V Voltage + 48 V Voltage
Loop Contact Loop Contact
CONTACT
VOLTAGE
E13
E12
E10
E11
ON AIR 1
ON AIR 2
S250
ON 1
8
J1
RC140
R1
CHAR WIDTH