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52 C1307M-C (8/07)
Maintenance and Troubleshooting
MAINTENANCE
Clean the enclosure window periodically with a mild nonabrasive detergent in water and a soft cloth to help maintain picture clarity.
TROUBLESHOOTING
NOTE: The system contains no user-serviceable parts. If there is a problem with your system, it must be returned to Pelco for servicing.
Symptom: Degrading video quality
From time to time, image quality may degrade.
1. Perform a manual FFC. After manually performing this process, the camera restarts the frequency clock and resets the baseline temperature
(refer to Flat Field Correction (FFC) on page 29).
2. If the problem persists, perform the troubleshooting steps for Symptom: No video or poor video on page 53.
Symptom: System does not operate
1. Check system input voltage.
2. The Esprit system is protected by a resettable overcurrent protective device located in the transformer module. Whenever a fault condition
is experienced in the system causing excessive current flow through the protective device, a change occurs that will prevent current flow.
The protective device will remain in this state as long as power is applied and the system fault remains. The protective device will reset
itself after power has been removed for a few minutes and will operate normally when the system fault has been repaired.
3. Check the system power and video BNC connections.
Symptom: No control/sluggish control (Coaxitron)
1. Check for correct type and length of coaxial cable.
2. Check for correct coaxial termination (refer to the controller manual to determine proper termination of video input). Normal load
termination is 75 ohms. When looping through VCRs or multiplexers, make sure the signal is terminated at the end device. Some
termination symptoms and problems are listed below.
Symptom Problem
Extremely bright video No termination or high resistance
Over contrast or contrast level of monitor needs to Double termination (37.5 ohms)
be increased to maximum for a good video image
3. If pan/tilt operation is sluggish, check the controller manual to make sure the control signal is set in the extended mode, not standard
mode.
Symptom: No control (RS-422/RS-485)
1. Check for correct cable type and length. The maximum cable distance for RS-422 communication over 24-gauge wire is 4,000 feet
(1,219 m). Pelco recommends using shielded twisted pairs, such as Belden 9843 or similar cable, that meets or exceeds the basic
requirements for EIA RS-422 or RS-485 applications.
2. Check for correct wire connections between transmitting device (such as the CM6700 Series matrix system) and Esprit system receiver.
Correct connections are from the transmitting device TX+ to Esprit system RX+ and from the transmitting device TX- to Esprit system RX-.
3. Check for correct DIP switch settings.