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PRC-2
User Manual
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Clear-Com PRC-2 User Manual

CLEAR-COM WIRELESS IFB
PRC-2
UHF MULTI-FREQUENCY BELT-PACK IFB
RECEIVER
INSTRUCTION MANUAL
PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver Instruction Manual © 2008 Vitec Group Communications Ltd. All rights reserved.
Part Number 810400Z Rev. 2
Vitec Group Communications Ltd 7400 Beach Drive IQ Cambridge Cambridgeshire United Kingdom CB25 9TP
Vitec Group Communications Room 1806, Hua Bin Building No. 8 Yong An Dong Li Jian Guo Men Wai Ave Chao Yang District Beijing, P.R. China 100022
® Clear-Com, CellCom/FreeSpeak and the Clear-Com Communication Systems logo are registered trademarks of The Vitec Group plc.

CONTENTS

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
General Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Control Knob. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
LED Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Headphone Jack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Mono Plug/Stereo Plug Usage . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Audio Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Frequency Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
Receiver Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
Receiver Normal Operation (already programmed) . . . . . . . . . . .1-6
Programming- Add a New Frequency To the Next Open Channel1-6
Erase All 5 Channel Memories . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Multiple Transmitter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
Battery Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
LIMITED WARRANTY. . . . . . . . . . . . . . . . . . . . . . . W-I
Warranty Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .W-i
Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .W-i
Warranty Repairs and Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . W-ii
Non-Warranty Repairs and Returns . . . . . . . . . . . . . . . . . . . . . . . . W-ii
Extended Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W-ii
Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .W-iii
Vitec Group Communications PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver
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PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver
Vitec Group Communications
Please read and follow these instructions before operating this product.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordan ce with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Only use attachments/accessories specified by the manufacturer.
10. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
11. Unplug this apparatus during lightning storms or when unused for long periods of time.
12. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
13. WARNING: To reduce the risk of fire or electric shock, do not expose this product to rain or moisture.

SAFETY NOTES

Excessive sound levels can cause permanent hearing damage.
1. Always adjust the volume to the lowest level before listening to unknown transmissions.
2. Use the lowest reasonable level consistent with hearing safety.
3. Do not use high sound levels in the earphone to overcome high ambient sound levels. That is absolutely foolish! Demand and use high isolation earphones.
4. Do not expose your ears to sound levels that cause them to ring. If your ears do ring after exposure, think of it as a warning bell telling you not to do that again.
Vitec Group Communications PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver
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OSHA (Occupational Safety Health Administration) guidelines on the maximum allowable time exposure to sound pressure levels that will cause hearing damage are as follows:
8 hours at 90 dB SPL 4 hours at 95 dB SPL 2 hours at 100 dB SPL 1 hour at 105 dB SPL 30 mins at 110 dB SPL 15 min at 115 dB SPL
Never expose your ears to 120dB SPL or higher/ Damage will occur.
Please familiarize yourself with the safety symbols in Figure 1. When you see these symbols on this product, they warn you of the potential danger of electric shock if the station is used improperly. They also refer you to important operating and maintenance instructions in the manual.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
This symbol alerts you to the presence of uninsulated dangerous voltage within the product's enclosure that might be of sufficient magnitude to constitute a risk of electric shock. Do not open the product's case.
This symbol informs you that important operating and main­tenance instructions are included in the literature accompanying this product.
Figure 1: Safety Symbols
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PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver
Vitec Group Communications
1

INTRODUCTION

INTRODUCTION

Thank you for selecting the ClearCom frequency agile, PRC-2 IFB Receiver. The PRC-2 is the result of extensive engineering e xperience with the very latest components. The design addresses the most demanding professional applications.
Figure 1-1: PRC-2 IFB Receiver
The ClearCom PRC-2 Receiver along with the companion PTX-3 transmitter allow on-air talent to monitor program audio , and to receive cues from directors and other production personnel.
The PRC-2 Receiver is housed in a rugged, machined aluminum package for lasting performance in abusive environments
Only the PRC-2 IFB Receiver is covered in this manual. The companion PTX-3 transmitter is covered in a separate manual. The PRC-2 IFB Receive will operate with any ClearCom PTX-3 IFB Transmitter in the same frequency block.

GENERAL TECHNICAL DESCRIPTION

The PRC-2 has a number of important and useful feature upgrades:
1. Two rotary HEX switches to manually set the operating frequency
2. Automatic sensing/control of a mono phone plug to eliminate the mono/binaural switch
3. A multi-color LED for battery status. The Frequency scan and memory features were retained.
The PRC-2 Receiver is comprised of a number of functional subsystems as shown in Figure 1-2 Control Panel and Figure 1-6 Receiver Block Diagram.
Vitec Group Communications PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver
1-1

GENERAL FEATURES

The frequency agile IFB PRC-2 FM Receiver is designed to operate with the ClearCom PTX-3 Transmitter and features microprocessor control of 256 frequencies of operation within each frequency block. Each block covers 25.5 MHz with 0.1 MHz frequency spacing. Any one of ten different frequency blocks are factory available from 512 MHz to 805.5 MHz (except 608 to 614 MHz).
The unique microcontroller design in this receiver provides simple one knob and one LED operation for audio level, switching frequencies (channels), and easy on-the-fly programming. The receiver frequency can be set by manually using the two rotary HEX swit ches on the side of the unit or by using the automatic scan and store function, or both.
When powered ON, the receiver will default to the frequency set by the switches. A nonvolatile memory can store up to five additional frequencies accessible by pressing the knob. The memory remains during power OFF and even with the battery removed.
The IFB PRC-2 Receiver uses 20 kHz FM deviation for efficient use of the bandwidth and a single band compandor for clean quiet audio.
The Pilot Tone squelch locks the reception to the mating IFB PTX-3 Transmitter and ignores other signals.
The receiver operates on one 9 Volt alkaline battery for up to 8 hours and features a tricolor LED low battery indicator. The voltages are internally regulated for stability.
The receiver is housed in a compact, rugged, lightweight aluminum enclosure. The unit features a durable removable belt clip and an integral swing-aside battery compartment door.

CONTROL KNOB

The single front panel control knob performs multiple functions;
1. Rotate for Power ON/OFF
2. Rotate for Audio Level
3. Push quick, Channel Switching
4. Push and rotate for Scan
5. Channel programming
Refer to the RECEIVER OPERATING INSTRUCTIONS for full details on how to use the single knob control for channel selection, scanning, and programming of the five memory locations.
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PRC-2 UHF Multi-Frequency Belt-Pack IFB Receiver
Vitec Group Communications
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