M S - 7 0 2 T W O - C H A N N E L M A I N S T A T I O N
1 - 7
1.
Check and unscrew the set screw in the mic mounting flange to make
sure it is clear of the threads in the bushing.
2.
Screw the microphone into the bushing hand tight.
3.
Turn the set screw on top of the mic mounting flange clockwise to lock
the microphone in place.
19. Headset Connector:
The headset connector is located on the front panel. All
Clear-Com headsets are recommended for use with the MS-702. The
following is a description of the characteristics of a suitable headset:
Mic Type --- Dynamic, see technical specifications for details
Headphone --- Dynamic, see technical specifications for details
The wiring of the headset is to be as follows:
Pin 1 --- Mic common
Pin 2 --- Mic hot
Pin 3 --- Headphone common
Pin 4 --- Headphone hot
The mic and headphone wiring in the headset cord must be individually
shielded.
Do not connect pins #1 and #3 together.
Headset extension cords
or headset “Y” cables are not recommended because they will increase
crosstalk between channels.
26.
Short Lights:
There is one red light for channel A and one for channel B.
These lights illuminate when the MS-702 senses a short or overload on the
associated channel. When the fault is removed, the MS-702 will
automatically reset and the light will go out.
REAR PANEL
The controls and connectors found on the MS-702 rear panel are shown in the
following figure and briefly described by the text that follows. The numbers in
the left column refer to Figure 1-3.
Figure 1-3: Rear Panel
4.
Tone Alert Volume Control:
This control adjusts the volume of the tone
alert sound. This is normally adjusted when the system is set up and there
should be no need to adjust it in normal operation.
15.
Option Switches:
Eight option switches are provided on the rear panel. They
should be configured when the system is set up, but are not changed in
MS-702
23
21
22
15
16
24
25
4
16
17
20
21
21
21
21
21
Term
Off
On
Intercom Channel A
Off
On
Term
Output: 30V, 1.2A Continuous, 2A Peak
Intercom Channel B
Alert
Volume
Tone
Intercom
Wiring
Gnd
Pwr
Audio
1
2
3
Prgm Input
Annc Out
Relay
Out
Hot Mic/
C-C IFB
System
On
Off
(Default)
Ring
Tip
Sleeve
Ring-Ext.IFB
Tip-Audio
Sleeve-GND
Mom T
alk
A
Mom T
alk
B
Call On
Ta
lk A
Call On
Ta
lk B
Intrpt Annc
Intrpt Ext IFB
Long Lin
e A
Long Lin
e B
