Specifications

Pelco Manual C1920M-D (4/03) 51
TROUBLESHOOTING
If you have difficulty operating your system, run through the following checklist to see if you
can solve the problem.
1. Are the keyboard switches set properly?
2. Is the equipment wired properly?
3. Are the menu options in the multiplexers and server set properly?
4. For the duplex models, is the LIVE/VCR LED on for live video and off for tape
playback? For the simplex models, has the multiplexer been set to the correct mode
using the DISPLAY/RECORD button?
5. The main monitor displays multiple camera images. The spot monitor displays full-
screen views only.
6. SPOT MONITOR must be selected to operate presets, patterns, and auxiliaries.
7. For duplex models, programming controls the auxiliary monitor. You cannot control it
from the keyboard or from the front panel of the multiplexer.
8. Tape playback can be done only on the main monitor and only while in VCR mode.
9. Moveable cameras must be Coaxitron compatible and the proper Coaxitron format
selected in the Camera menu of the multiplexer. If the proper format is not selected,
the camera will either not move or have sluggish control.
10. Moveable cameras can be operated with the joystick or pan and tilt keys:
• From the main monitor if the spot monitor is programmed to track the main monitor.
• From the spot monitor if the spot monitor is chosen.
Also, the camera will move on the main monitor if the same camera is being shown on
both the main and spot monitors.
11. The position of switch 7 on the keyboard determines how you call cameras.
• If the switch is ON, all cameras are addressed consecutively. Do not count just the
cameras installed. Count 16 camera inputs per multiplexer, even if a multiplexer has only
9 inputs. The first input of multiplexer 1 is always camera 1, the first input of multiplexer 2
is always camera 17, the second input of multiplexer 3 is always camera 34.
• If the switch is OFF, cameras are addressed in groups of 9 or 16 according to the
address of the multiplexer. Select a multiplexer (for example, number 3), then
choose a camera (1-9 or 1-16).
12. If you have one multiplexer, it must be the master. If you have more than one
multiplexer, any one of them must be the master and all others slaves (Advanced
System Setup menu of multiplexer).
If you have a keyboard and switch 4 is OFF (polled communication mode), one
multiplexer must be the master and all others slaves. If switch 4 is ON (non-polled
mode), all multiplexers are slaves and the keyboard is the master.
13. If you have more than one multiplexer, they must have different addresses (Advanced
System Setup menu of multiplexer).
14. If you have a server, the address of the multiplexer must correspond to the input to
which it is connected on the server. For example, if the multiplexer goes to input 4 on
the server, the multiplexer must be address 4.
15. If you have a server, each keyboard must have its own address.