RCA LDK 5481, LDK 4700 manual Connecting the studio signalling, Call and On-air signals

LDK 5481 + LDK 4700 User’s Guide Base unit

3-12

3.4Connecting the studio signalling

Connect the studio signalling system to the rear of the base unit. The wiring of the panel connector is shown below. Refer to the next chapter for the location of this connector.

Figure 3-4. Signalling / Intercom / Auxiliary connector

1	2	3	4		5	6	7	8
	9	10	11	12	13		14	15

15-pin male D-connector; panel view

Panel part number: 2411 022 05292

A4-wire (Off) or 2-wire (On) intercom system is selected with rocker switch number 1.

On

Off

1 2 3 4 5 6 Side view of switches

1.Intercom PROD Out (4-wire) or Intercom PROD In/Out (2-wire)

2.Call send (dry contact to pin 10)

3.n.c.

4.On Air send (dry contact to pin 12)

5.Intercom PROD In

6.Private data In

7.Private data Out

8.Housing

9.Camera microphone Out return

10.Call return

11.n.c.

12.On Air return

13.Intercom PROD In return (4-wire) or not connected (2- wire)

14.n.c.

15.Common ground

3.4.1 Call and On-air signals

There are two connection methods for the Call and On-air signalling functions:

1.Dry contact

2.Voltage level

The connection method for the signalling functions is set by a jumper on the main board of the base unit. Remove the upper lid of the base unit and locate jumper X317 at the bottom centre of the board. The settings of the jumper are shown below:

Figure 3-5. Jumper settings for signalling

C2039
C2005			MP2000		26			19
R2022		R2019	R2024				9500C
R2023
	C7516						I
				5				12
					R9533	R9532	C9503	C9507
	IC7503
			MP7502		R9534	R9536	R9531	C	D
	C7513		+	MP2004			X317
					R5021
								A	B

R6005

K6000

X312

C	D	C	D
L1500
1500C	+
A	B	A	B

dry contact voltage level

v4.0