CPI MCR320 Instruction Manual - Page 4

Browse online or download pdf Instruction Manual for Remote Control CPI MCR320. CPI MCR320 14 pages. Mcr / tsr series multi-channel remote controls

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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.