Grass Valley LDK 4410 - Manual (Page 16)

16 LDK 4410 + LDK 5420 3G Fiber Transmission System User’s Guide (v1.0)
Chapter 2 - Base station
Four-wire systems
2.1.3 Studio signalling
Connect the studio signalling system to the rear of the base station. The wiring of the
signalling connector is shown below:
There are several connection methods for the ISO (On Air Yellow), On Air and Call signalling
functions: dry contact, common ground, voltage level and open circuit/voltage level.
A selection in the SYSTEM > SIGNALLING menu allows you to make the activity state of the
function (Active or Inactive) correspond to a particular input signal. There are two leads for each
connection - Send and Return.
Function Value
Output signal level +6 or 0 dBu (RMS) selectable
Output impedance max. 50  symmetrical
Input signal level +6 or 0 dBu (RMS) selectable
Impedance min. 9 k  symmetrical
-
+
-
+
8
1
15
9
Housing
Eng in/out
Prod in/out
Housing
Prog in ret
Prog in
Prod in ret
Prod in
Eng in ret
Eng in
Signalling function Send pin Return pin
ISO 3 11
On Air 4 12
Call 2 10
1
8
9
15
Call out send
Call out return
On Air send
On Air return
Audio 1 level
Audio 2 level
GND
Preview out send
Preview out return
ISO in send
ISO in return
Call in send
Call in return
5 V
Housing