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21
VARIO2 Troubleshoot :
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 power is 12-24V AC or DC (For Vario 16 variants : 24V AC or DC
only)
• Ensure telemetry wires are shorted out or valid telemetry input (zero volt
or TTL) is applied and correctly wired
• Check photocell is working. Cover photocell fully, light should turn on if
valid telemetry input. It is sometimes difficult to see Infra-Red illuminators
working in high brightness conditions.
• Ensure power supply is suitably rated to product - check page 20 for
specifications
• If longer cables used, ensure sufficient voltage is provided to allow for
drops across the cable
If OK…
Step 2: Illuminator Test
• Check current is being drawn – amount of current will depend on
power setting of unit. Please note – use appropriate multimeter depending
on how the unit is being powered (AC or DC)
• To test this you must ensure photocell fully covered (or disabled using
optional VARIO remote controller or manual control buttons) and ensure
telemetry wires are shorted out or valid telemetry input (zero volt or TTL) is
applied and correctly wired
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