Videoswitch VCM User Manual
Page 10
Duplex Multiplexers
User Manual
Page 10
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Videoswitch
VCM614d.doc
3.3 Set-up Switch (8-way DIL)
S2 Description
OFF
ON
1 VCR
Sampling
Mode
Normal Irregular
2
Simultaneous Record and Play
(Dual VCR)
Normal Dual
VCR
3
On-Screen Camera Identification
Location
Bottom Top
4
Alarm Relay activated by
Alarm
Inputs
Video Loss
5 (i)
VCM-24/28:
VCR
Record/Play
(ii) VSM-24/28: Tagging Format
(iii)
VSM/VCM-212/216/220:
Multiplexing
(set OFF if switch S2-4 is ON)
BNC
Standard
Normal
S-Video
Series 1
3hr mode if
alarm
present
6 Alarm
Mode
Unlatche
d
Latched
7
Alarm Input Polarity (if this
switch is on, unused alarm inputs
must grounded)
Normally
Open
Normally
Closed
8
SET key functions
Enabled Disabled
Note: The default setting for all sections of the set-up switch (S2) is “OFF”. Refer to the diagram in
section to 1.4 identify this switch.
3.4 Camera Termination Switches (4-way DIL)
Each camera must be terminated by 75
Ω. This termination is normally provided by the multiplexer.
Set all the termination switches (S3, S4, S4, S5 and S6) to “ON” in order to terminate the cameras
in the multiplexer.
If any cameras are looped through to other equipment that provides termination, then the
termination switches on the multiplexer corresponding to those cameras should be turned “OFF”.
The termination switches are underneath the multiplexer near the BNC connectors. The
correspondence between switches and camera inputs is shown in this table (they run across from
left to right on the multiplexer in the same order as the BNC camera inputs). Refer to the diagram
in section 1.4 to identify these switches.
Secti
on
S3 S4 S5 S6 S7
1
Camera 1 Camera 5 Camera 9
Camera
13
Camera
17
2
Camera 2 Camera 6 Camera
10
Camera
14
Camera
18
3
Camera 3 Camera 7 Camera
11
Camera
15
Camera
19
4
Camera 4 Camera 8 Camera
12
Camera
16
Camera
20
Only the switches relevant to the multiplexer model will be fitted. The default setting for all these
switches is “ON”.