Lectrosonics UMC195d User Manual download pdf (Page 4)

UHF and VHF

ASSEMBLY and INSTALLATION

Assembly of the unit consists of installing the receivers into the frame and connecting the antenna and power leads

to each receiver. This is only necessary if the unit was purchased without any receivers. If the unit is purchased with

receivers, they are installed at the factory before shipment.

IMPORTANT - The receivers installed in the unit must fall between the frequencies indicated on the SERIAL/FREQUENCY

label. Serious signal loss results if the receivers are outside the RF pass-band.

INSTALLING THE RECEIVERS

1. Remove the U-channel wire cover by completely removing the four counter-sunk phillips head screws from the top

of the unit. Underneath the U-channel wire cover is a rectangular metal rod held down by five counter-sunk

phillips head screws. Loosen these five screws five to seven turns (it’s not necessary to remove them completely.)

2. Before installing the receivers, be sure to record the serial numbers and frequencies. This information is printed

on the side panel labels which won’t be visible after installation.

3. If your receivers have the antenna jack(s) on the front panel, route the antenna leads through the slots on the front

of the frame before mounting the receivers. Be sure to route the wires under the rectangular metal rod.

4. Insert the first receiver into the slot nearest to the power switch by sliding it under the wiring harness and the

rectangular metal rod. Be sure the front panel of the receiver is fully inserted into the cutout on the inside of the

front panel. Install the remaining receivers in the same manner.

5. Secure the receivers into the frame by tightening the five counter-sunk phillips head screws in the rectangular

metal rod. Don’t overtighten!

6. Attach the antenna leads to each receiver. Diversity units have dual antenna cables for each receiver. They are

marked with “A” and “B” which correspond to the “A” and “B” antenna inputs on the Diversity RF/power distribution

module. Each diversity receiver must get an “A” lead and a “B” lead or the benefits of diversity reception will be

lost. Non diversity units will have only one antenna lead per receiver.

7. Attach one power lead to the 12V DC IN jack on the rear of each receiver.

8. Dress the antenna and power wires so that the bundle is as flat as possible and to the rear of the rectangular

metal rod. For receivers with the antenna jacks on the front, be sure the antenna wires are routed under the

rectangular metal rod. Carefully place the U-channel wire cover over the wiring bundle and press down to see if it

will lay flat without pinching any of the wires underneath. It may be necessary to re-dress the wires to accomplish

this.

9. Start the four phillips head screws and tighten them slowly while watching the wires to be sure none are pinched.

INSTALLING THE ASSEMBLED UNIT

1. Mount the assembled frame into the rack, connect the antenna(s) to the Antenna input(s) and the PS50 power

supply to the 12VDC jack on the rear of the RF/power distribution module.

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Lectrosonics UMC195d User Manual Page 4