Connect Systems Inc. -Model TP-154 Page 4
VALID: This is an open collector NPN transistor output that
is used to let a companion Model 8200 Full Duplex
Interconnect know when DCS or CTCSS is valid. The
transistor is normally on, but is turned off during
the interval that a DCS or CTCSS code is valid. This
output is only used when using the TP-154 in
conjunction with a CSI Model 8200.
+12 VDC: Connect to a source of 12-14 VDC. The TP-154 is
reverse polarity protected, so a polarity mistake
will not damage your TP-154. Connect the return lead
(-) to GND.
#################### WARNING ####################
The TP-154 contains a power supply sensing circuit that
continuously monitors the input supply voltage. An instantaneous
drop below 10 VDC will cause a microcomputer reset. If the power
supply has poor regulation, erratic operation may result.
The purpose of the input voltage sensor is to protect the non-
volatile EE memory during power up and power down.
If erratic operation is observed be suspicious of poor regulation
from the power supply.
#########################################################
IMPORTANT NOTE
The TP-154 is factory programmed with all 154 tones/codes turned
on. As far as programming is concerned the panel is ready to
operate as soon as it is connected to the receiver and transmitter
and appropriate level adjustments have been made.
Do not attempt any reprogramming until you have the TP-154 up and
running as a repeater. Or you run the risk of a programming error
causing a problem you do not understand. The TP-154 can be
returned to full factory default programming at any time by simply
installing jumper JP-6 and turning the power off and back on
again. You will see || || || || in the display during the re-
initializing process. When the display shows ---- the process is
complete. Remove JP-6 and your TP-154 is ready to use programmed
to factory default values.
Should you forget your programming mode access code you will have
to return all programming to the factory default values so that
you can start over again.
