Instruction manual
RM-702 TWO-CHANNEL REMOTE STATION
2-13
• Remote control of talk switches
• Inadequate sidetone adjustment
INTERCOM LINE WIRING
The intercom line wiring has several purposes in the Clear-Com system:
• Connection of the audio intercom signal between stations.
• Delivery of DC power for remote stations (such as the RM-702) to operate
from.
• Termination of the intercom audio line external to remote stations.
Connect the intercom lines of stations and power supplies using a shielded
twisted pair cable with XLR 3-pin connectors (the same as used for balanced
microphones). Refer to the installation overview section of this manual for more
information.
The RM-702 has a male and female pair of XLR-3 connectors for each intercom
line. The male-female pair of connectors are wired parallel and intended for
loop-through connection.
The pinout of the intercom connectors are as follows:
Pin 1 --- Ground (shield)
Pin 2 --- Power
Pin 3 --- Audio
The following application shows the practical connection of the intercom lines in
the block diagram of the cable/school television studio.
Figure 2-12: Connecting a Small Cable/School Television Studio
The entire system is wired using male/female microphone cables looped-through
each station except for the HB-702s. The HB-702 has screw terminals for the
intercom lines. The PS-702 provides the DC power for the system and the line
termination switches must be turned on.
Director
Assistant
Director
Video Graphics
To headset
To headset
To
headset
To headset
HB-702
HB-702
Floor Managers
RM-704
RS-601
RS-601 RS-601
RS-601 RS-601
To
Headset
To
Headset
To
Headset
To
Headset
To
Headset
Connection Codes
03 = 3-pin “xlr”
04 = 4-pin “xlr”
15 = DB-15
B = 1/4-inch stereo phone plug (ring/tip/sleeve)
C = 1/8-inch mono phone plug (tip/sleeve)
H = Screw terminals
W = AC power cord
Male
Female
Talent
Announcer
Channel B
Channel A
Cameras
Program Input
From station SA outputs
Provided by user
Paging
Speaker
Mixer/Amp
To
Ear Piece
To
Ear Piece
PS-702
3
3
3
3
3
3
3
C
3
C
3
3
3
4
3
3
3
3
4
H
H
4
H
H
4
3
3
4
33
4
3
3
4
3
3
4
3
4
B
A
B
A
B
15
B
A
BA
A
B
RM-704