Product manual

Overview
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Problem:
Upon power up of Model 6, no LEDs light.
Solution:
Check Model 6 power supply cable, and internal fuse, F1. When the
Model 6 is powered on, the LEDs should go through a self-test. First,
the LEDs flash a vertical pattern, then a horizontal pattern. At this
point with the Model 6 in an idle situation, only the vehicle status
LEDs should be lit. If an EPROM was recently installed in the
Model 6, verify correct placement of EPROM in socket.
Problem:
When Model 6 is Alerted and/or PA is activated, there is no
dispatcher voice over the station’s PA.
Solution:
The Model 6’s VOX Jumper, JP3, should always be enabled, in the
“B” position, even if the Model 6 is tied into a radio’s COR
connection. The VOX position allows the Model 6 to sample
incoming audio and determine if the audio is data packets (mute), or
dispatcher voice (unmute). Also, verify the level setting of R87
(Voice) is appropriate. With older Model 6 software (revision 1.04 or
earlier), if there is a handset installed on the Model 6(s) and it is off
its cradle (off hook), the audio will be steered to the handset, not to
the station’s PA. Make sure the handset is secure in cradle when not
in use.
Problem:
Multiple Data packets (chirping) are heard over the station’s PA
when PA is activated.
Solution:
Within the programming of the Model 6, PA Options Menu, verify
PA UNMUTE Mode is disabled. When disabled, this allows the
Model 6 to sample and mute incoming data packets when PA is
activated. Also if the Model 6’s Voice Debounce value is set for a
long duration (over 2 seconds), there is a time in which the data
packets could be heard before being muted.
Problem:
When alerting stations, or changing statuses, the Model 6/26 system
response is extremely slow.
Solution:
Determine if there are communication failures in the system (look at
Model 26 for red LEDs lit next to the buttons assigned to stations).
Even if there is no indication of communication failures, there can be
retries by either the Model 26 or Model 6(s) due to poor
communications that will slow performance. If the system is using
wireline, verify lines have very little noise. For radio, monitor over
the air for retries of either unit. Within the programming of the units,