CPI Communications TSR Series - Manual (Page 4)

4
General Information
The MCR / TSR series of remote control units when
combined with the appropriate termination panel, provide
a reliable means of remotely controlling a multi-channel
conventional radio or a multi-system trunking radio.
The remote provides LED channel display, channel up
and down buttons, scan button with indicator, monitor
button with indicator, speaker, volume control, intercom
button (allows intercom between parallel remotes and the
control station).
A maximum of 50 parallel remote units may be con-
nected to the control station via the termination panel.
The remotes are available in a telephone style unit and
for conventional systems a console version with desk
microphone is available.
Pre-Installation Considerations
Power: The remote unit may be powered from 120 volt
60 Hz AC using the supplied wall pack transformer or a
12 to 16 volt DC source may be used in place of the wall
pack.
The remotes have been designed with protection against
both power and telephone line surges. This circuitry
requires that a high quality ground point be connected to
the GND terminal of the remote. When the supplied wall
pack is used a standard grounded outlet is acceptable.
An ideal ground point would consist of a 1/2 inch copper
rod driven at least six feet into the earth with at least a #
16 AWG copper wire connecting it to the GND terminal
of the remote, taking the shortest path possible.
Phone line: For proper operation, use of a high quality
voice grade circuit such as leased line or in-house
twisted pair wiring is required. DC continuity is not
required. Connection is made to the remote via the
supplied six foot modular cord.
Multiple Remotes: Up to 50 remote control units maybe
connected in parallel. (This number is a technical limit
and would not be practicle in most applications.)
As parallel units are installed, the setup procedure need
only be performed to the new remote(s). The existing
remotes do not require readjustment.
Installation
Connections
Phone line connections are made using the supplied
modular line cord. Only the two center conductors, the
red and green wires, are used. They are not polarity
sensitive.
Power connections consist of plugging the wall pack in to
the nearest grounded AC receptacle. If you need to
power the remote from a DC source, remove the wall
pack and connect the positive supply lead to terminal 1of
J2 and the negative supply lead to terminal 2 of J2.
Setup adjustments
On typical installations setup adjustments require only a
screwdriver.
Line balance: This is the first adjustment that should be
made. The phone line must be terminated at the radio
end by the appropriate model termination panel.
With the remote powered down, remove the four screws
that secure the top half of the housing. They are acces-
sible from the bottom of the unit with a small phillips
screwdriver.
After the screws are removed, carefully lift the top half of
the remote and set it off to the right. Do not unplug the
cable connecting the top and bottom halves.
For telephone style remotes, power up the unit. Hold the
cradle switch down and momentarily press the PTT
switch on the handset. You should hear a tone on the
speaker. (Adjustment of the volume control may be
necessary).
While continuing to hold the cradle switch down, adjust
potentiometer R10 until the tone heard is at a minimum
or null setting. Release cradle switch. Line balance is
complete.
For the console style units, press and hold the channel
up switch while powering up the remote. You should hear
a tone on the speaker. (Adjustment of the volume control
may be necessary). Release the channel up switch.
Adjust potentiometer R10 until the tone heard is at a
minimum or null setting. Press the channel down switch.
Line balance is complete.
Receive Audio: The receive audio input has no adjust-
ment. The remote will function with input levels from -10
dBm to +10 dBm.
Transmit Audio: Potentiometer R39 control the transmit
audio output. It is preset at 0 dbm and should not require
adjustment. If you do need to adjust the level, the
control is accessible through the bottom of the deskset
style housings.
You may now power down the remote and reattach the
top and bottom halves or cover. Note: Care should be
taken in the hook-switch area of the telephone style units
to assure proper operation.
Operation
We have attempted to make the controls on our MCR /
TSR series remotes function the same as the front panel
of the radio. This is not always possible on some radio
models and in some cases features that are on the radio
will not be found on the remote.
After installation is complete you may power up the
radio.
If you are using the radio as a control station, you must
have the radio microphone plugged in to the termination
panel's microphone jack and "on-hook" when the radio is
powered up or the microphone will not be recognized.
Any radio functions that require a sustained depression
of a button are not supported from the remote.