Raytec VARIO PSU - Manual (Page 7)

Troubleshooting
Ensure all tests are undertaken by a qualified, trained engineer
Ensure safe working practices are followed at all times
Step 1 Basics

Check polarity of illuminator connection: red= +ve, black= -ve

Ensure PSU outputs provide 24V DC

Ensure telemetry wires are shorted out or closed contact input (zero volt) is applied

Check photocell is working. Cover illuminator photocell fully, light should turn on. It is
sometimes difficult to see Infra-Red lamps working in high brightness conditions.

Check mains input

Check fuses intact

If longer cables used, ensure sufficient voltage is provided to allow for drops across the
cable
If OK…
Step 2 Lamp Test

Check current is being drawn – amount of current will depend on power setting of
unit. Please note – use appropriate DC multimeter

To test this you must ensure photocell fully covered (or disabled using optional VARIO
remote controller or VARIO IP web interface) and ensure telemetry wires are shorted out
or closed contact input (zero volt) is applied
Step 3 Set-up Camera, lens and illumination

Check camera lens – fully open at night & set correctly

Check model number to Raytec performance specification to ensure required distance is
achievable;
- Check illuminator is set to max power
- Check orientation of illuminator and ensure it is pointing in correct direction
- Check angle of illuminator (Holographic lens) – Too narrow may cause hot spots
and the aperture of the camera lens to close down. Too wide and there may be
insufficient light on scene and light going where it is not needed.