Huvitz HDR-9000, Service Manual

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
(Dial) : changes option value.

: start a ping test.
NAK or TIMEOUT gives the count information about how many times it failed communicating
bi-directionally with a testing target. Incomplete connection of cable, electronic noise on any point
in-between the path between Operation Panel and test target, unstable status of power supply,
certain defect or damage in any circuitry may cause unsuccessful communication. So it is easier
for service engineers to diagnose if a refraction system is in stable status or not in the view of data
communication.
Testing Target
Repeating Count
Acknowledge Count
Negative
Acknowledge Count
Timeout Count