6. TROUBLESHOOTING
If you have any problems with using the external amplifier unit, please refer to this section. If you still
have queries, do not hesitate to contact us via e-mail at:
+44(0)1597 824 811.
My sensors are not reading what I expect / I'm getting odd readings.
First of all, ensure that the sensors are level, and facing the source of light/area that it should be measuring.
This sounds very simple, but this can be an easily overlooked when encountering problems!
Also, check that the correct sensors are connected to the correct terminals – this can be done by looking at
the label placed under the lid of the amplifier, and making sure that the serial numbers of the sensors
(marked on each cable) are in the input terminal that has been configured for them.
Also check that the four output wires are connected to the correct channels in the measuring equipment, and
that the system is interpreting the output in the correct way.
Another reason that may account for this is inadequate power supply. If your output range is between 0
and up to 3V, the power supply should be between 5 and 15V. If your output range is between 0 and 3 to
6V, the amplifier will require a power supply of between 9 and 15V.
The readings I'm getting are noisy.
First of all, please make sure that the sensors are not more than approximately 1m away from the amplifier.
We do not recommend that the sensor be more than 1m away from the amplifier in any case. At all times, the
cable must be securely fastened down.
Also, ensure that the screening is maintained throughout between the sensors and the amplifier. The sensor
cable has an overall cable screen connected to the grey wire.
8
1 – 4 Channel External Amplifier
