RF MultiMax!
UHF WIDE BAND ANTENNASPLITTER
Operation Manual for RF MulitMax! with PCB V1.2Copyright 2004
Professional Sound Corporation
Printed in the U.S.A.

TABLE OF CONTENTSDESCRIPTION…………………………………………………………………………………...3SAFETY WARNINGS…………………………………………………………………………...3APPLICATIONS…………………………………………………………………………………3FUNCTIONS
1 X 4 PASSIVE SPLITTER/COMBINERS………..……………………………….3-4

1 X 8 ACTIVE SPLITTERS………………………………………………………….5-6
POWERING…………………………………………………………………………...6-7A.

DC POWER, 4 PIN XLRB.

AC POWER, MAINSCONSTRUCTION……………………………………………………………………….7A.

CHASSISB.

ELECTRONIC TOPOLOGYC.

ENVIRONMENTAL OPERATIONWARRANTY AND NON-WARRANTY SERVICE………………………………...7-8

SPECIFICATIONS………………………………………………………………………8CE DECLARATION OF CONFORMITY……………………………………………...92

DESCRIPTION
Thank you for purchasing the Professional Sound Corporation RF MultiMax!
UHF Wide Band Antenna Splitter. PSC is confident that this new RF MultiMax!
has set new standards for antenna splitting technologies and features. Pleasefeel free to contact us if you have any comments or questions concerning yournew RF MultiMax!. Additionally, we invite you to share your suggestions for new
products you would like to see developed.
Professional Sound Corporation extends a one-year warranty on parts and labor
to all RF MultiMax! owners who return their warranty cards at the time ofpurchase. This warranty gives you specific rights, which are stated on the card,and enables us to keep you informed of product updates.
The PSC RF MultiMax provides all the functions necessary to produce advanced
RF antenna splits in the field. It’s user friendly features, rugged design and RFpurity make the RF MultiMax! perfect for reality shows, electronic field production(EFP) and feature film production. There’s only one RF MultiMax! and it’s fromPSC.

SAFETY WARNINGS:
Please be sure that you have read this entire manual before operating thisproduct.
While special attention has been given to your safety, the operator
determines proper and safe use and conditions.
Please note the following:
Do not operate this product outdoors in wet conditions such as rain.
Do not operate this product from unknown AC sources where grounds orneutrals may be inoperative.
APPLICATIONS•••

Reality Television Production
Location recording (Dialogue and Music)
Broadcast remotes

FUNCTIONS:A.

1 X 4 PASSIVE SPLITTER/COMBINERS

The PSC RF MultiMax! contains two 1 x 4 splitter/combiners. These circuits are passive
in design and thus can be used in either direction. This allows you the user to utilize
them as 1 x 4 splitters or as 4 x 1 combiners.

3USE AS 1 x 4 SPLITTERS
When used as splitters, a common antenna feed is split 4-ways and then sent on to thewireless receivers.
Please note that when used as 1 x 4 splitters, there is anapproximate signal loss of 9 dB though the splitter. Although we mention the use of
these as splitters, they should only be used this way if you have run out of available
active splitters (1 x 8 splitters). Splitting of low level RF signals are rarely done passively
unless you have a known good, strong RF signal.

ANTENNA

OUT

OUT

OUT

OUTREC 1REC 2REC 3 REC 4IN4

USE AS 4 x 1 COMBINERS
This is the primary use and design of this portion of the RF MultiMax! When used as acombiner, 4 antennas may combined into one RF output that can then be sent to theother 1 x 8 active splitters for distribution to all of your wireless. For example: You needto provide RF coverage of a large house or facility for a realty television show. You caneasily set up 4 pairs of diversity antennas in four different rooms of the house and feedthese four pairs into the 4 x 1 combiners. You now have a single output (diversity wouldbe a pair of outputs) that combines all of the RF signals picked up by the antennas in allfour rooms. This output can then be patched into the 1 x 8 splitters and RF is now
available from all rooms of the house to all wireless receivers.

ANTENNAS X4OUT

IN

IN

IN

RECEIVER OR CONNECT
TO 1 X 8 SPLITTER

5IN

B.

1 X 8 ACTIVE SPLITTERS

The PSC RF MultiMax! contains four independent 1 x 8 active splitters that can be usedeither by themselves or in conjunction with the 4 x 1 combiners. Each of these 1 x 8
active splitters contain a very low noise amplifier, a high pass filter and an 8-way splitter
providing a low noise signal splitting function without loss and with a high degree of
isolation between the signals of your wireless receivers. Because the devices areactive, they cannot be used as combiners. You must only feed an RF signal into thesingle BNC connector labeled with a letter such as “A”, “B”, “C”, or “D” This signal willthen be amplified and split up 8-ways and feed to the corresponding 8 output BNCconnectors. These connectors are then connected to the wireless receivers. The 1 x 8active splitters can be daisy-chained for special applications.

ANT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

123

45678A

INPUT

8 RECEIVERS

POWERING:
A. DC POWER, 4PIN XLRThe PSC RF MultiMax! can be powered from DC for ease of use in the field. The RF
MultiMax! Is designed to operate off any DC voltage within the range of 9 to 18 VDC. To
power the RF MultiMax! in this way, you simply have to plug in a 4-pin XLR power cablefrom your battery. In keeping with industry standards, Pin 1 is Ground and Pin 4 isPositive. Because the RF MultiMax! is reverse-polarity protected, if you inadvertently
miss-wire your power cable, no damage will be done, the RF MultiMax! simply will not
power up. The PSC RF MultiMax! contains a DC to DC converter that allows it tooperate over wide range of input voltage without difficulty. At a common voltage of12Vdc, the RF MultiMax! consumes approximately 280mA.. Current is inversely
proportional to the operating voltage. For example: at 10Vdc the current consumption is375mA, at 18Vdc the current consumption is 200mA.

6B. AC POWER, MAINS
The PSC RF MultiMax! can also be operated from AC mains. The AC input voltage
range is 100Vac to 240 Vac, 50 to 60Hz. This allows the RF MultiMax! to operate
worldwide without adjustment or jumper setting. Power consumption is approximately
20 watts when operated from AC mains.

CONSTRUCTIONA.

CHASSISThe chassis of the RF MultiMax! is made from formed steel and an aluminum face plate.
The chassis is painted with a textured finish black paint and the aluminum front panel isanodized black for a professional appearance. The case occupies two rack spaces andcan be installed in all standard racks.
B.

ELECTRONIC TOPOLOGY

The circuitry within the RF MultiMax! has been designed to provide years of trouble freeuse under normal operating conditions. The DC power supply is reverse polarity
protected and the AC supply is designed for wide input range use. The internal voltage
regulation is designed for quite, trouble free operation and all of the BNC inputs andoutputs are DC protected.
C.

ENVIRONMENTAL OPERATIONThe PSC RF MultiMax! Can operate over a temperature range of –4F to +158 F (-20C to+70C).

WARRANTY AND NON-WARRANTY SERVICE
In the unlikely event your RF MultiMax! requires service it should be carefully packed
and shipped prepaid to:Professional Sound Corporation
Service Department
28085 Smyth Drive
Valencia, CA 91355 USA
PH 661-295-9395
FAX 661-295-8398
e-mail techsupport@professionalsound.com

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Please call before shipping your RF MultiMax!. We may be able to solve yourproblem via the phone. We are always willing to help you with your RF MultiMax!
questions.
WARRANTY:
Complete details of the PSC RF MultiMax! warranty are given on the enclosed
blue warranty registration card. If you did not receive one, please contact yourlocal dealer or call us directly.

SPECIFICATIONS
Size:

2 Space Rack Mount

Weight:9lbs. (4Kg)

Temp Range:-4 to +158F (-20 to +70C)

AC Power:

100 to 240Vac, 50-60Hz

DC Power:

9 to 18Vdc, Pin 1 Ground, Pin 4 Positive

Case Material:

Steel with Aluminum Face PlateFinish:

Black Texture Paint, Black Anodize

Global Gain:

Active Splitters, unity gain, +/-2dB

Freq. Response:

450Mhz to 900Mhz

Noise Figure :2.8dB

Maximum Input:+13dB

Output Isolation:>24dB

Warranty:

1 Year, Limited

0.5 Amp

Copyright 2004, Professional Sound Corp. This manual and the complete RFMultiMax! design is covered under various state, federal and international
copyright laws. No portion of this manual or any RF MultiMax! technologies may
be reproduced without the specific written permission of PSC. All rights reserved.
This manual and all RF MultiMax! specifications subject to change without notice.

8CE
DECLARATION OF CONFORMITY
EMC: This product is in compliance with the Electromagnetic Compatibility
Directive, 89/336/EEC as defined in EN 50081-1, EN55022 and EN 50082-1.
IEC801-2, IEC801-3 and IEC801-4.

LVD: This product is in compliance with the requirements of the Low Voltage
Directive, 73/23/EEC. 93/68/EEC as defined in EN60065, 1993 and/or
EN60950/A1/A2/A3: 1995
TRADE NAME:
MODEL:PSC
RF MultiMax!

RESPONSIBLE PARTY:

Professional Sound Corp.
28085 Smyth Drive
Valencia, CA 91355 USA

CONTACT PERSON:

Ronald Meyer(661) 295-9395

TYPE OF PRODUCT:

Antenna Splitter

MANUFACTURER:

Professional Sound Corp.
28085 Smyth Drive
Valencia, CA 91355 USA

We hereby declare that the equipment bearing the trade name and model number
listed above has been tested in accordance with the requirements contained in theabove listed directives. All necessary steps have been taken and are in force toassure that production units manufactured will conform to Directive guidelines.
December 2003

Professional Sound Corporation.

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