Instruction manual

Connect Systems Inc. -Model TP-154 Page 6
JUMPER STRAP OPTIONS
JP-1 De-emphasis strap. If you have connected to the
discriminator output, JP-1 should be installed. If you have
connected to a source of flat (already de-emphasized) audio
such as the high end of the volume control JP-1 must be
removed. If JP-1 is improperly strapped the audio will not
sound proper and DTMF will not decode properly.
JP-2 Output level strap. The audio output is selectable in two
ranges. With the strap installed, the audio out is 0-1 volt.
With the strap removed, the output range is 0-5 volts. The
strap should be installed in most installations.
JP-3 DCS/CTCSS Level strap. The DCS/CTCSS output level is
selectable in two ranges. With the strap installed, the
level is 0-1 volt. With the strap removed, the output range
is 0-5 volts. The strap should be installed in most
installations.
JP-4 PTT Polarity. This strap gives you a choice of pull to
ground, or pull to +12 VDC for transmitter keying.
JP-5 LED Power. Removal disables all front panel LEDS (except
PTT) and is used to save power in low power applications
such as solar powered installations.
JP-6 Reset Factory Settings. If you wish to return the
programming back to factory settings simply install this
strap and turn the power on. When the initialization begins,
the display will show "11 11 11 11". When the procedure is
complete, the display will show "----". At this point remove
the jumper. The display will blank and the TP-154 is ready
to use just like it came from the factory.
JP-7 50 or 38 tones. Install this jumper to operate in 38 tone
mode. Remove this jumper to operate in 50 tone mode. see
the IMPORTANT NOTICE at the beginning of the manual for
more information.
JP-8 8200 compatible. Install this strap only if the TP-154 is
going to operate in conjunction with a CSI Model 8200 Full
Duplex Interconnect. Installation modifies TP-154 operation
for compatibility.
JP-9 Not Used. There is no JP-9
JP-10 COS Polarity Select. This strap must be installed. Select
the polarity that causes the REC led to illuminate when a
signal is received, and go out when there's no signal. Note
that the COS threshold adjustment P4 must first be adjusted.