Pelco C1995M-A User Manual
®
MX4004
Genex® Series
Multiplexer
Installation/
Operation Manual
C1995M-A (10/01)
Pelco • 3500 Pelco Way • Clovis, CA 93612-5699 USA • www.pelco.com
In North America and Canada: Tel (800) 289-9100 or FAX (800) 289-9150
International Customers: Tel +1 (559) 292-1981 or FAX +1 (559) 348-1120
CONTENTS
Section Page
IMPORTANT SAFEGUARDS AND WARNINGS................................................................4
DESCRIPTION...................................................................................................................5
WHAT IS A VIDEO MULTIPLEXER?..........................................................................5
GENEX SERIES MULTIPLEXERS ............................................................................6
MODELS ....................................................................................................................6
APPLICATIONS .........................................................................................................7
INSTALLATION .................................................................................................................10
MOUNTING...............................................................................................................10
SINGLE MOUNT...............................................................................................10
DOUBLE MOUNT ............................................................................................. 11
CONNECTING CAMERAS .......................................................................................12
CONNECTING MONITORS......................................................................................13
VCR HOOKUP, HEAD PULSE SWITCHING, AND PROGRAMMING......................14
STANDARD VCRS............................................................................................14
PELCO’S TIME-LAPSE VCRS .........................................................................15
WIRING ALARM INPUTS .........................................................................................16
CONNECTING A KBD4000 SERIES KEYBOARD (OPTIONAL)..............................17
SINGLE KEYBOARD ........................................................................................17
STAR CONFIGURATION OF MULTIPLEXERS................................................18
CONNECTING AN MX4000SVR SERVER WITH KEYBOARDS (OPTIONAL) .......19
CONNECTING A MULTIPLEXER WITH CM6700 SCU (OPTIONAL) ......................20
POWERING THE MULTIPLEXER ............................................................................21
MINIMUM PROGRAMMING .....................................................................................21
PROGRAMMING ..............................................................................................................22
CODE FILE PROGRAMMING SWITCH ...................................................................22
PASSWORD .............................................................................................................22
CHANGING THE LANGUAGE..................................................................................23
GENERAL MENU INFORMATION............................................................................24
MENU NAVIGATION AND EDITING.................................................................24
ENTERING THE MENU SYSTEM ....................................................................24
MENUS .....................................................................................................................26
MAIN SELECTION MENU (QUAD BUTTON)...................................................26
SYSTEM (BASIC) SETUP (VIEW BUTTON)....................................................27
SYSTEM ADVANCED SETUP (VIEW BUTTON) .............................................29
RECORD SETUP (LIVE/VCR BUTTON) ..........................................................31
CUSTOM VCR SETUP .....................................................................................33
CAMERA SETUP (CAMERA BUTTON)............................................................34
SEQUENCE SETUP (SEQUENCE BUTTON)..................................................35
PROGRAMMING MENU DEFAULTS .......................................................................36
SPECIFIC APPLICATIONS PROGRAMMING ..................................................................37
KBD4000/KBD4002/KBD4000V PROGRAMMING (OPTIONAL) .............................37
PAN AND TILT CONTROL QUICK SETUP...............................................................37
GENEX INSTRUCTIONS .................................................................................37
SPECTRA/ESPRIT MAIN MENU ACCESS......................................................38
TESTING...........................................................................................................................38
RECORDING AND PLAYBACK ................................................................................38
KBD4000/KBD4002/KBD4000V START-UP TEST ...................................................38
MX4000SVR (SINGLE MODE) START-UP TEST ....................................................39
ALARM, RELAY, AND VCR.......................................................................................39
OPERATION .....................................................................................................................40
ALARM LOG .............................................................................................................43
TROUBLESHOOTING ......................................................................................................43
RESET ......................................................................................................................44
SPECIFICATIONS.............................................................................................................45
INDEX ...............................................................................................................................46
REGULATORY NOTICES................................................................................................. 48
WARRANTY AND RETURN INFORMATION....................................................................48
2 Pelco Manual C1995M-A (10/01)
LIST OF ILLUSTRATIONS
Figure Page
1 Stand-Alone Multiplexer .....................................................................................7
2 Multiplexer with KBD4000 Keyboard .................................................................7
3 Multiplexers with KBD4000 Keyboards and MX4000SVR .................................8
4 Multiplexer with CM6700 Matrix Switcher ..........................................................9
5 Rack Installation – One Multiplexer ..................................................................10
6 Rack Installation – Two Multiplexers................................................................. 11
7 Camera Wiring Example ...................................................................................12
8 VCR Wiring Example, One VCR .......................................................................14
9 Pelco Time-Lapse VCR Wiring Example .......................................................... 15
10 Alarm Wiring Example ......................................................................................16
11 Connecting the Keyboard to the Multiplexer .....................................................17
12 Star Configuration of Multiplexers .....................................................................18
13 Connecting KBD4000/KBD4002 Keyboards to the Server ............................... 19
14 Daisy Chaining Multiplexers to the Server ........................................................19
15 Connecting Multiplexer to a CM6700 SCU .......................................................20
16 Menu Access Buttons ....................................................................................... 25
17 Main Selection Menu ........................................................................................26
18 System (Basic) Setup Menu .............................................................................27
19 Alarm Wiring Example ......................................................................................28
20 System Advanced Setup Menu.........................................................................29
21 Monitor Menus for Multiple Units in One System ..............................................30
22 Record Setup Menu ..........................................................................................31
23 Custom VCR Setup Menu.................................................................................33
24 Camera Menu ...................................................................................................34
25 Camera Sequence Menu ..................................................................................35
26 Multiplexer Front Panel .....................................................................................40
27 Alarm Log..........................................................................................................43
LIST OF TABLES
Table Page
AVideo Coaxial Cable Requirements ..................................................................13
B RJ-45 Pin-Outs ................................................................................................. 20
C Programming Menu Defaults ............................................................................36
D Front Panel Controls .........................................................................................40
E Operation Guide................................................................................................41
Pelco Manual C1995M-A (10/01) 3
IMPORTANT SAFEGUARDS AND WARNINGS
1. Read, keep, and follow these instructions.
2. Heed all warnings.
3. There are no user-serviceable parts inside this unit. Only authorized service personnel
may open the unit.
4. Installation and servicing should only be done by qualified service personnel and
conform to all local codes.
5. WARNING: To reduce the risk of fire or electric shock, do not expose this unit to rain
or moisture if this unit is designed for indoor use only.
6. Unless this unit is specifically marked as a NEMA Type 3, 3R, 3S, 4, 4X, 6 or 6P
enclosure, it is designed for indoor use only and it must not be installed where
exposed to rain or moisture.
7. Do not expose this unit to dripping or splashing. Do not place objects filled with liquids,
such as vases, on this unit.
8. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
9. The installation method and materials should be capable of supporting four times the
weight of the unit and equipment.
10. Do not install near any heat source.
11. Only use attachments/accessories specified by the manufacturer.
12. Clean only with dry cloth.
13. Do not defeat the safety purpose of the polarized or grounding-type plug.
14. Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the unit.
15. Unplug this unit during lightning storms or when unused for long periods of time.
The product and/or manual may bear the following marks:
This symbol indicates that dangerous
voltage constituting a risk of electric shock
is present within this unit.
This symbol indicates that there are
important operating and maintenance
instructions in the literature accompanying
this unit.
Please thoroughly familiarize yourself with the information in this manual prior to installation
and operation.
FOR QUALIFIED SERVICE PERSONNEL ONLY
1. Only use replacement parts recommended by Pelco.
2. After replacement/repair of this unit’s electrical components, conduct a resistance
measurement between line and exposed parts to verify the exposed parts have not
been connected to line circuitry.
CAUTION:
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
3. CAUTION: Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
Battery should only be replaced by authorized service personnel.
4 Pelco Manual C1995M-A (10/01)
DESCRIPTION
WHAT IS A VIDEO MULTIPLEXER?
A four-channel (or quad) multiplexer lets you record pictures from up to four cameras on a
single VCR. You can also watch up to four cameras simultaneously on one screen, either
live or in playback. For closer detail, you can choose full-screen viewing without losing
detail (as occurs with “quad” devices that compress four pictures into one recording).
The multiplexer acts as an interface between the CCTV cameras and the VCR. It switches
between cameras much like a sequential switcher, except a multiplexer must switch at
exactly the same rate as the VCR is recording so just one video picture (field) is recorded
from each camera before it switches to the next camera. The reason is that, with several
cameras, you need to switch as quickly as possible to minimize the time gap between
successive pictures from a particular camera.
Recording can be done on regular or time-lapse VCRs. Time-lapse VCRs are similar to
regular VHS recorders except time-lapse VCRs can record as many as 960 hours of video
on a single T-120 (two-hour) VHS cassette. Even the lowest cost models have longer
recording times than a regular VCR.
If you connect one camera to a multiplexer and record at two-hour speed on a time-lapse
recorder, motion appears normal when you play the tape. But as you add more cameras to
the multiplexer, it must switch between cameras, allowing a gap in the pictures recorded for
any one camera. The more cameras, the longer the gap. Motion on playback becomes
jerky because of missing video.
Not only does the number of cameras affect the time gap, so does recording speed. The
slower the speed, the longer the gap. Normal recording speed for full motion is two-hour
mode. Recording 12, 48, or 960 hours of video on a two-hour tape means a lot of video is
left out.
Thus, the more cameras and the slower the recording speed, the longer the time gap
between recorded pictures for each camera. Also, having both black and white and color
cameras together in a system—rather than just one kind—slows switching. Important video
could be lost.
Pelco Manual C1995M-A (10/01) 5
GENEX® SERIES MULTIPLEXERS
The MX4004 Genex® Series duplex multiplexers can accept video inputs from a maximum
of four cameras. You can work in any of four languages: English (default), French, German,
or Spanish.
These duplex multiplexers let you view multi-screen video while recording or playing tapes
using regular or time-lapse VCRs. MX4004 multiplexers do not record and play back
simultaneously.
• The main monitor displays video from a single camera or from multiple cameras.
Video can be either live or from a tape playback. Multiple-screen displays can be in a
four-camera format.
•A spot monitor displays live video from a single camera. A spot monitor is optional, but
increases the flexibility of your system. For example, you can keep an eye on all
cameras in a multiple-screen format on the main monitor while watching a full-screen
view of any one camera on the spot monitor. Or, if you are playing a tape on the main
monitor, you can use the spot monitor to watch live video.
Cameras can be sequenced on all monitors.
There are four alarm inputs—one per camera—that tag the camera images when an alarm
is activated. You can program main and spot monitors to display alarms. Alarm inputs also
activate a relay output, which can be used to change a VCR to its programmed alarm
recording speed. When there is an alarm, the VCR (depending on how it is programmed)
will either record alarm cameras only or record both alarm and non-alarm cameras.
MODELS
MX4004CD 4-channel, color duplex multiplexer, NTSC standard, 12 VDC (FCC)
MX4004CD-X Same as MX4004CD except PAL standard
6 Pelco Manual C1995M-A (10/01)
APPLICATIONS
NOTE:
The KBD4000,
KBD4002, and KBD4000V
keyboards in combination
with a multiplexer provide
Coaxitron control of pan, tilt,
and lens functions.
When used with 32-bit extended Coaxitron receivers,
such as Intercept®, Spectra®,
IRD/ERD2000 Series, and
LRD41C21/LRD41C22 Series, the KBD4000/KBD4002/
KBD4000V keyboard in conjunction with a multiplexer will
support all the functions of a
15-bit standard Coaxitron
receiver, including the setting
and calling of presets and
patterns. It will not support
programming of labels for
presets or patterns. If labels
for presets or patterns are
required, program them with
a different control, such as
the MPT9500.
The MX4004 Genex Series lets you configure your system in various ways.
The simplest system is a stand-alone multiplexer (Figure 1). Just connect cameras,
monitors, a VCR, and alarm inputs. Front panel push buttons control the multiplexer.
By adding a KBD4000/KBD4002/KBD4000V keyboard to the multiplexer (Figure 2), you
can control 1-16 multiplexers from up to 25 feet (7.6 m) away with the cable supplied with
the keyboard. You can obtain greater distances between the multiplexer and the keyboard
by providing a Pelco KBDKIT(-X) and your own cable.
A keyboard also lets you control moveable cameras. Control systems for moveable
cameras must be Coaxitron® compatible. In Figure 1 cameras are fixed.
The systems shown in Figures 1 and 2 are for a single operator only. To permit up to four
operators to use the system, add an MX4000SVR Multiplexer Server, as shown in Figure 3.
Main and spot monitor outputs from each multiplexer are connected to the server, providing
two video channels. The design is not a true matrix, however, because only two operators
(instead of all operators in a true matrix) can select cameras from the same multiplexer at the
same time, one operator using the main monitor and the other operator using the spot monitor.
If a true matrix configuration is necessary in which all operators can access a multiplexer, a
matrix switcher (such as Pelco’s CM6700) can be used. Refer to Figure 4. However, only one
multiplexer can be used. In this example, looped video is from individual cameras; video from
the main monitor can be either from individual cameras or from multiplexed cameras.
SPOT
CAMERAS - 4 MAXIMUM
MONITOR
(OPTIONAL)
MAIN
MONITOR
VCR
IN
OUT
CAMERAS - 4 MAXIMUM
1234
IN
OUT
MX4004 MULTIPLEXER
Figure 2. Multiplexer with KBD4000 Keyboard
MAIN
1234
SPOT
1234
MX4004 MULTIPLEXER
OUT IN
SVHS75 OHMS
Figure 1. Stand-Alone Multiplexer
SPOT
MONITOR
(OPTIONAL)
SPOT
1234
MAIN
SVHS75 OHMS
MAIN
MONITOR
VCR
OUT IN
SVHS
COM-IN
COM-OUT
IN OUT
VCR
COM-IN
COM-OUT
SVHS
VCR
IN OUT
12 VDC
ALARMS
1 2 3 4 H 0
TO COM IN OF NEXT MULTIPLEXER16 MULTIPLEXERS MAXIMUM
12 VDC
ALARMS
1 2 3 4 H 0
KBD4000
00149
Pelco Manual C1995M-A (10/01) 7
MONITORS - 4 MAXIMUM
SERVER
MULTIPLEXER INPUTS
MAIN
1 2 3 4 5 6 7 8
SPOT
1 2 3 4 5 6 7 8
KBD4000 KEYBOARDS
F
2
F
3
7
8
C
P
A
R
M
E
S
E
T
M
A
0
C
R
O
TO ADDITONAL KEYBOARDS
UP TO 2 MORE
KBDKIT (-X)
LOCAL PORT
7
8
C
A
M
0
VIDEO OUTPUTS
MUX(S)
1
2
3
4
45
3
6
2
7
1
8
WALL BLOCK
TERMINALS
1
2
3
4
5
6
7
8
F
2
F
3
P
R
E
S
E
T
M
A
C
R
O
12 VAC
LOCAL
KEYBOARD
REMOTE
PORT
MAIN MONITOR
OUTPUT FROM
MULTIPLEXER
1234
IN
OUT
1234
IN
OUT
1234
IN
OUT
SPOT MONITOR
OUTPUT FROM
MULTIPLEXER
(OPTIONAL)
SPOT
1234
SPOT
1234
SPOT
1234
MAIN
SVHS75 OHMS
MAIN
SVHS75 OHMS
MAIN
SVHS75 OHMS
VCR
VCR
OUT IN
SVHS
VCR
VCR
OUT IN
SVHS
VCR
VCR
OUT IN
SVHS
COM-IN
COM-OUT
COM-IN
COM-OUT
COM-IN
COM-OUT
MULTIPLEXER
12 VDC
ALARMS
1 2 3 4 H 0
MULTIPLEXER
12 VDC
ALARMS
1 2 3 4 H 0
MULTIPLEXER
12 VDC
ALARMS
1 2 3 4 H 0
Figure 3. Multiplexers with KBD4000 Keyboards and MX4000SVR
8 Pelco Manual C1995M-A (10/01)
O
N
1234
O
N
VIDEO INPUTS
1 3 5 7 9 1 13 15
2 4 6 8 10 12 14 16
CM6700 MATRIX SWITCHER
VIDEO OUTPUTS
1
2
3
4
LOCAL
MULTIPLEXER
1234
IN
R+R-TT+
OUT
USER-SUPPLIED CABLE
BETWEEN REMOTE
KEYBOARD PORT AND
ALL WALL BLOCKS
SPOT
1234
45
3
2
1
WALL BLOCK
TERMINALS
Figure 4. Multiplexer with CM6700 Matrix Switcher
MAIN
SVHS75 OHMS
6
7
8
VCR
OUT IN
SVHS
MULTIPLEXER
WALL BLOCK
KBD300
N
1234
O
12 VDC
COM-IN
ALARMS
COM-OUT
1 2 3 4 H 0
1
2
3
4
5
6
7
8
KBD300
N
1234
O
1
2
ADDITIONAL
3
KEYBOARDS
4
5
6
7
8
TO
KBDKIT
12 VAC
Pelco Manual C1995M-A (10/01) 9
INSTALLATION
Unpack and inspect all parts carefully. The following parts are supplied:
1 MX4004 Series multiplexer
1 6-foot (1.8 m) data cable with RJ-45 connectors
1Wall transformer
1 Power cord (PAL models only)
MOUNTING
Place the multiplexer on a flat surface or install it in a 19-inch (48.26 cm) equipment rack.
To install in an equipment rack, you will need the optional RK100 rack mount kit that must
be ordered. Remove the four feet beneath the unit and refer to either Figure 5 or Figure 6.
Use the brackets and hardware supplied with the kit.
1
2
3
3
Figure 5. Rack Installation – One Multiplexer
SINGLE MOUNT
1. Refer to Figure 5. Remove the front two screws from both sides of the multiplexer. Use
two of the screws to attach the short rack ear to either the left or right side of the unit
(Figure 5 shows left-side installation).
2. Use the remaining two screws to attach the long rack ear to the opposite side of the unit.
3. Use the four supplied black screws to mount the assembly in the rack.
10 Pelco Manual C1995M-A (10/01)
3
2
1
1
5
NOTE:
You need to locate
the multiplexer near an electrical outlet in order to initialize the unit (refer to step 9,
Powering the Multiplexer
Mounting it in a rack may
make this difficult.
).
4
5
Figure 6. Rack Installation – Two Multiplexers
DOUBLE MOUNT
1. Refer to Figure 6. Remove the front two screws from both sides of the multiplexer. Use
four of the screws to attach the short rack ears to the outer sides of each unit.
2. Use two of the screws to attach the V-bracket to the inner side of the right unit.
3. Use the remaining screws to attach the mounting block to the inner side of the left unit.
4. Do the following to connect the multiplexers: Put the V-bracket into the mounting
block. Fasten the multiplexers together with the four supplied 6-32 x .312-inch,
Phillips, pan head screws.
5. Use the four supplied black, Phillips, pan head screws to mount the assembly in the
rack.
Pelco Manual C1995M-A (10/01) 11
CONNECTING CAMERAS
LOOPING INPUTS
NON-LOOPING INPUTS
1234
IN
OUT
SPOT
1234
MAIN
SVHS75 OHMS
VCR
OUT IN
SVHS
COM-IN
COM-OUT
12 VDC
ALARMS
1 2 3 4 H 0
IMPORTANT:
Camera
power should be wired in
phase to all cameras. When
cameras are sequenced,
they will roll on the spot
monitor if they are out of
phase. On the main monitor,
cameras are digitally time
corrected and will not roll
when sequenced if they are
out of phase.
LOOPED VIDEO
00154
Figure 7. Camera Wiring Example
Video inputs can come from any conventional source. No external camera synchronization
is required. Table A shows the type of video coaxial cable to use.
To connect cameras (refer to Figure 7):
1. Connect the coaxial cables from your cameras or receivers to the IN connectors. If
you are using moveable cameras, the receivers must be Coaxitron compatible.
Stand-Alone Multiplexer – Connect fixed cameras to channel inputs.
Multiplexer with KBD4000/KBD4002/KBD4000V – Connect fixed or moveable
cameras to channel inputs.
Multiplexer with KBD4000/KBD4002/KBD4000V and MX4000SVR Server –
Connect fixed or moveable cameras to channel inputs.
Multiplexer with CM6700 – See step 2.
2. If you want to loop a video signal out to another device, connect coaxial cables from
the looping OUT connectors to the external equipment inputs. Termination for each
camera input at the multiplexer must be changed from 75 ohms to high impedance
through DIP switches on the rear of the multiplexer.
Multiplexer with CM6700 – Connect fixed or moveable cameras to the multiplexer
first, and then loop them to the CM6700 (refer to Figure 4). Termination for each
camera input at the multiplexer must be changed from 75 ohms to high impedance
through DIP switches on the rear of the multiplexer.
12 Pelco Manual C1995M-A (10/01)
Table A. Video Coaxial Cable Requirements
Cable Type* Maximum Distance
RG59/U 750 ft (229 m)
RG6/U 1,000 ft (305 m)
RG11/U 1,500 ft (457 m)
* Minimum cable requirements:
75 ohms impedance
All-copper center conductor
All-copper braided shield with 95% braid coverage
CONNECTING MONITORS
NOTE:
Skip this step if you
are connecting your multiplexer to an MX4000SVR or
to a CM6700 SCU.
Refer to Table A for the type of video coaxial cable to use.
Main Monitor – Connect the video input of your monitor to the multiplexer’s MAIN output
using standard BNC connector and coaxial cable. If your color monitor supports SVHS, you
can use a special SVHS cable between your monitor and the multiplexer.
Spot Monitor (Optional) – Connect your spot monitor to the SPOT output.
Pelco Manual C1995M-A (10/01) 13
VCR HOOKUP, HEAD PULSE SWITCHING, AND PROGRAMMING
STANDARD VCRS
If you have a Pelco VCR, proceed to Pelco’s Time-Lapse VCRs.
VCR (STANDARD OR SVHS)
RECORD/PLAY
GROUND
HEAD SWITCHING PULSE
MAIN
123 4
IN
OUT
Figure 8. VCR Wiring Example, One VCR
1. Connect the video to the multiplexer video connectors. For standard VCRs, use the
BNC connectors (refer to Table A). For SVHS VCRs, use the SVHS connectors (use
video cable designed for SVHS).
SPOT
1234
OUT IN
SVHS75 OHMS
VCR
SVHS
COM-IN
COM-OUT
12 VDC
ALARMS
1 2 3 4 H 0
Refer to Figure 8.
a. Connect VCR OUT on the multiplexer to the video IN on the VCR.
b. Connect VCR IN on the multiplexer to the video OUT on the VCR.
2. The multiplexer’s camera switching rate must match the VCR’s recording speed. Use
one of the two ways shown below:
Head Switching Pulse (VCR Switch Pulse)
This is the most reliable way to synchronize the multiplexer and VCR. The pulse from
the VCR tells the multiplexer how fast to switch between cameras. (If you use this
method, you do not need to program the rate; however, you must set VCR Switch
Pulse to ENABLED + or ENABLED – [depending on whether the VCR sends a
positive or negative pulse to activate recording] in the Record Setup menu.) You can
pull the eight-pin plug-in terminal block out of the connector on the back of the
multiplexer to make wiring easier.
Refer to Figure 8 and connect the H (head switching) terminal and ground from the
multiplexer to the VCR.
Programming
You can synchronize the VCR and multiplexer by programming the multiplexer
switching rate to the VCR’s recording speed. No wiring is required. Refer to the
Programming
Proceed to
section.
Wiring Alarm Inputs
.
14 Pelco Manual C1995M-A (10/01)
PELCO’S TIME-LAPSE VCRS
GND
CAL
ALMINRECSET R ST MODE
CLK
OUT
RESET
MIC
IN
OUT
IN
AUDIO
123 4
IN
OUT
Figure 9. Pelco Time-Lapse VCR Wiring Example
To connect one of Pelco’s Time-Lapse VCR Models TLR2024, TLR3024, TLR3040,
TLR2096, TLR2168, or TLR2168S to the multiplexer (refer to Figure 9):
REMOTE
OUT
VIDEO
PELCO TIME-LAPSE VCR
SPOT
1234
MAIN
SVHS75 OHMS
VCR
OUT IN
SVHS
A
COM-IN
COM-OUT
B
12 VDC
ALARMS
1 2 3 4 H 0
00137
NOTE:
The TTL output relay (O) terminal is designed
to be used with devices under 5 mA.
1. Connect BNC video cable between the VCR connectors on the multiplexer and the
VIDEO connectors on the VCR.
2. Head (or VCR) Switching Pulse lets the VCR control the multiplexer’s recording speed.
It is the most efficient recording method. To wire (refer to the “B” lines in Figure 9):
a. Connect the VCR’s CLK output to the multiplexer head switching (H) input to
synchronize camera switching.
b. Connect the multiplexer’s ground terminal to the VCR’s GND terminal.
3. Alarm recording starts and stops when there are alarms. To wire (refer to the “A” lines
in Figure 10):
a. Connect the multiplexer’s TTL output relay (O) terminal to the VCR’s SET IN
(alarm input) or ALM IN terminal.
b. Connect the multiplexer’s ground terminal to the VCR’s GND terminal.
Pelco Manual C1995M-A (10/01) 15
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