CRYPTAG CENSUS, Instructions Manual

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10
4. TROUBLESHOOTING
It is rare for the reader to fail, so check the installation as well.
No LEDs come on
This will normally mean that the reader is not receiving power of the correct polarity. Check the voltage
on the reader terminals using a meter.
If there is very bright light, it may not be possible to see the LEDs. If this is the case, the reader may need
relocating.
If the LEDs are still not coming on, replace the reader.
Red LED does not flicker when a tag is brought in, OR
Data LED does not flash when a tag is brought in.
This suggests that the tag is not being read.
Make sure that the tag you are using is a working Cryptag Census tag.
Is there another reader in the vicinity?
See the section on reduced range.
Red LED flashes, but no response by controller (i.e no output message)
Does the Data LED flash when the tag is brought in to the reader? If not check whether this tag is valid
for the reader? An ELC1 may be configured to report some tags and ignore others.
Is the tag being removed from the reading zone for sufficient time? Normally a few seconds will be
sufficient, but it is possible for the ELC1 to be programmed to wait for longer. (In this case you should
have been informed.)
Data LED flashes but there is no controller response
Check the wiring to the controller.
Has the controller been programmed to respond to the tag being used?
NB If the power supply to the reader has had incorrect polarity, there is a small chance that the output
circuit has been damaged.
Tags are read, but range is low
Check the Noise LED. This should be off when no tag is present. Any flickering on the Noise LED is
likely to mean that reading range will be affected. (If the noise LED is off it doesn’t ensure that there is
no interference, but the reading range will usually exceed 90cm.)
Is there another reader nearby?
Is there a computer monitor nearby?
Is the reader mounted on metal? The ELC1 is not designed to be mounted on metal.
Is Range (terminal 4) connected to Hi (terminal 3)?