Connect Systems Inc. - Model 9800 Page 6
If you prefer to inject these tones directly into the
modulator via the TONE port, remove resistor R-48
instead.
If the TSU-32P option is not installed and you want your
signaling tones to come out the AUDIO OUT port, there is
no need to remove R-48 or R-105.
R-48 is near the Beeps/CW ID pot. R-105 is near IC
U-14.
POWER: Connect to a source of 12-14 VDC that can supply up to
300 MA. The 9800 is reverse polarity protected, so a
polarity mistake will not damage your 9800.
#################### WARNING ####################
The 9800 contains a power supply sensing circuit that continuously
monitors the input supply voltage. An instantaneous drop below 12 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 such as losing calls occurs, be suspicious of
poor regulation from the power supply.
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