MODEL 3000 / ACCESS 4000. CE Installation Notes.
18
LAN VOLTAGE TESTING
NOTES:
1. These Voltage checks should be done with no (or minimal) communications traffic on the LAN. To ensure this:
a) Check that poll times for all addressed modules in the system are set to the default 60 / 120 seconds or greater.
b) Disconnect LAN A and LAN B from any unaddressed modules on the LAN, as these modules will be constantly
attempting to send messages to the Control Module.
c) Ensure that Terminals, Readers, etc. are not being used while performing tests.
Before proceeding with Voltage tests, check the “RX” LED on the Control Module to confirm that there is minimal LAN
activity.
2. To determine if a problem exists on the module under test, or elsewhere on the LAN, these voltage tests can be performed:
a) With the module connected to the LAN.
b) On the cable connections with the module disconnected from the LAN.
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