Bogen Tpu 250 Instructions Manual
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TPU250 Telephone Paging Amplifier Installation and Use Manual © 2000 Bogen Communications, Inc. All rights reserved. 54-5900-01r1 0001
Notice Every effort was made to ensure that the information in this guide was complete and accurate at the time of printing. However, information is subject to change. Important Safety Information Always follow these basic safety precautions when installing and using the unit: 1. Read and understand all instructions. 2. Follow all warnings and instructions marked on the product. 3. DO NOT block or cover the ventilation slots and openings. They prevent the product from overheating. DO NOT place the product in a separate enclosure or cabinet, unless proper ventilation is provided. 4. Never spill liquid on the product or drop objects into the ventilation slots and openings. Doing so may result in serious damage to the components. 5. Repair or service must be performed by a factory authorized repair facility. 6. The product is provided with a UL-CSA approved, 3-wire ground type plug. This is a safety feature. DO NOT defeat the safety purpose of the grounding type plug. DO NOT staple or otherwise attach the AC power supply cord to building surfaces. 7. DO NOT use the product near water or in a wet or damp place (such as a wet basement). 8. DO NOT use extension cords.The product must be installed within 6 feet of a grounded outlet receptacle. 9. DO NOT install telephone wiring during a lightning storm. 10. DO NOT install telephone jacks in a wet location unless the jack is specifically designed for wet locations. 11. Never touch uninsulated wires or terminals, unless the line has been disconnected at the paging or controller interface. 12. Use caution when installing or modifying paging or control lines. Applications Assistance Our Applications Engineering Department is available to assist you from 8:30 A.M. to 6:00 P.M. and on call until 8:00 P.M., Eastern Daylight Time, Monday through Friday. Call 800-999-2809, Option 2. Domestic and International Listings UL and CSA Listed. © 2000 Bogen Communications, Inc. All Rights Reserved. Printed in Korea. Page 2 of 12
Contents Page INTRODUCTION..........................................................................................................................4 PACKAGE CONTENTS..............................................................................................................4 INSTALLATION..............................................................................................................................5 Mounting............................................................................................................................5 Wall Mounting........................................................................................................................5 Rack Mounting......................................................................................................................5 WIRING CONNECTIONS........................................................................................................6 Input Wiring......................................................................................................................6 Tel Input..................................................................................................................................6 Music Input............................................................................................................................7 Microphone Input..................................................................................................................7 Night Ringer Connections....................................................................................................8 Bridging Inputs......................................................................................................................8 Input Cover Replacement....................................................................................................8 ‘Output Wiring................................................................................................................9 Speaker Connection..............................................................................................................9 Additional Power Amplifier ............................................................................................................10 Line-Matching Transformer WMT 1A Connector..............................................................10 Output Cover Replacement................................................................................................10 OPERATION..................................................................................................................................11 Indicators........................................................................................................................11 Controls....................................................................................................................11-12 Page 3 of 12
Introduction This document describes the Bogen TPU250 250-watt Telephone Paging Amplifier (see Figure1). This is a full-featured, wall-mounted amplifier that provides inputs for dry loop 600-ohm telephone page signal, background music source, and low impedance microphone.Automatic music mute is provided when making a telephone page. Background music mute level during a page is adjustable and the music slowly fades back in after the page is completed. An automatic level control system limits the output level of the telephone page channel so that differences in the volume of the paging partys voice will be less noticeable. Bass and treble controls are provided for adjusting the quality of the output signal. An Aphex ®Aural Exciter feature is also provided. Aphex improves the clarity of the output signal by replacing the higher frequency harmonics that are normally lost through the telephone system. This amplifier includes a built-in night ringer that can be triggered by either a standard telephone (analog) ring signal or an external contact closure. The night ringer mutes the background music, but not pages. Package Contents * Telephone Paging Amplifier unit * 4 wall-mounting screws * Installation and Use Manual Before You StartReview the contents of the box. Read through this entire manual to understand how this product installs and operates. Telephone Paging Amplifier Page 4 of 12 70V 25VCOM GND TEL MIC BALGND+MUSIC MUTEMUSIC IN BRIDGINGTR PEAK LEVELPOWER MODEL TPU250 250 WATT AMPLIFIER ALC TEL VOLUME MIC VOLUME MUSIC VOLUME MUSIC MUTE RINGER VOLUME BASS TREBLE APHEX BOGEN COMMUNICATIONS VOX GNDMUSIC INCONTACT RINGTEL RINGAPHEX Figure 1: Telephone Paging Amplifier
RACK
MOUNTING
SCREWS ARE
NOT SUPPLIED
.........................
PEAK LEVELPOWER
BASS
MUSIC MUTERINGER VOLUME
TREBLEAPHEX
....................
TEL VOLUME
ALCMIC VOLUMEMUSIC VOLUME
VOX
Figure 3: Rack Mounting the Amplifier
Installation
The amplifier is designed for wall mount applications but can also be mounted in a
standard 19 rack. The TPU250 amplifier weighs 31lbs.
NO
TE:The amplifier will produce heat during operation which will rise and may
cause problems for temperature-sensitive equipment mounted above it. Mount the
amplifier near the top of the backboard (for wall mounting) or rack (for rack
mounting) so that no other equipment will be above it. If this is not possible, then
allow at least 12 between the top of the amplifier and the bottom of any equipment
positioned above it. Also allow at least 6 between the bottom of the amplifier and
any equipment below it to allow for adequate air circulation.
Wall MountingTo wall mount this unit, use the four 5/8” pan head screws with nylon washers
provided (see Figure 2). Insert the top two screws first leaving the heads protruding
about 1/4”. Lift the amplifier and place it over the 2 screws using the top keyhole
slots in the flanges at the sides of the amplifier. Allow the amplifier to rest on the 2
screws and then proceed to insert the bottom 2 screws into the lower keyhole slots.
With all the screws in place, tighten the screws to secure the amplifier.
NO
TE:Backboard must be a minimum of 3/8” thick plywood and securely mounted
to the wall.
Rack MountingThe amplifier was designed to mount directly to standard 19” racks using the
mounting flanges as shown in Figure 3 (rack screws are not supplied). In the factory
set position, the unit will protrude from the front of the rack. This provides the best
ventilation of the unit and easier access to the wiring connections.
NO
TE:The unit can also be mounted partially recessed in the rack by reversing the
mounting flanges. Unscrew the mounting flanges (3 screws mount the flange to the
cover) and install them in a flipped over orientation. This position will provide
adequate ventilation and centers the weight of the unit over the rack rails.
Mounting
Page 5 of 12
(M4 x 16 mm)
TYP 4 PCS SCREW #8 x 5/8
WITH TEFRON WASHER
1/8 x 5/16 (3 x 8 MM)
PEAK LEVELPOWERTREBLE
BASSAPHEX
.................... .........................MIC VOLUMEMUSIC VOLUME
ALCTEL VOLUME
MUSIC MUTERINGER VOLUMEVOX
Figure 2: Wall Mounting the Amplifier
TEL MIC
BALGND+MUSIC
MUTEMUSIC IN
BRIDGINGTR
MODEL TPU250
250 WATT AMPLIFIER
ALC TEL VOLUME MIC VOLUME
BOGEN COMMUNICATIONS
GNDMUSIC
INCONTACT
RINGTEL
RING
APHEX
BGM
IN
PAGING TIME VOX DELAY TONE VOL.MIN MAXMIN MAXMIN MAX
TAM BTELEPHONE ACCESS MODULE
BOGENRAMSEY, N.J.COMMUNICATIONS
S5 S5
VOX ENABLE VOX DISABLES3 S4
PREANNOUNCE TONE S3 S4
CONFIRMATION TONE 48VDC PWR SUPPLY S1,S2
24VDC PWR SUPPLY S1,S2ON OFF MODE
RINGER EQUIVALENCE: 1.2 BCD23CH-17705-KX-N FCC REGISTRATION NUMBER: COMPLIES WITH PART 68, FCC RULES
VOL BGMSWITCHES
MODE
(0.1A)(TRUNK ACCESS ONLY)POWER SUPPLY CONTACT CLOSURE APAGING OUTPUT EXT VOX ENABLEPHONE SYSTEM
-24/48 +24/48 COM N.O. PR PT -M +MRT
Figure 4: Wiring for TEL Input
Page 6 of 12
Wiring Connections
IMPORTANT:Before making any connections or wiring changes to the amplifier
or any equipment connected to the amplifier, make sure that the amplifier is NOT
plugged into an AC outlet.
NO
TE:The amplifier does not have a power switch, so it must be unplugged in
order to turn the power off.
All signal input and control wiring is made to the terminal strip and RCA connectors
beneath the left side access cover. Loosen the 2 Phillips-head screws on each side
of the cover and remove it.
TEL InputThe telephone input is a 600-ohm, dry loop, balanced input available at the T and R
terminals. Automatic music mute is provided when making a telephone page.
Input Wiring
Telephone Paging Amplifier
TEL MIC BALGND+MUSIC MUTEMUSIC IN BRIDGINGTR MODEL TPU250 250 WATT AMPLIFIER ALC TEL VOLUME MIC VOLUME BOGEN COMMUNICATIONS GNDMUSIC INCONTACT RINGTEL RING APHEX LOCK White - Green- Red -MIC +‘MIC BAL’ Black -MIC -‘MIC BAL’ Microphone Cable Shield - GND Music InputA single RCA connector and screw terminals are provided for the connection of a background music source. The music input is a mono unbalanced input, so the music source’s output should be unbalanced and mono. If a balanced input is needed, use a Bogen Line-Matching Transformer WMT1A (sold separately) to balance the music input. The WMT1A is also effective in breaking ground loops that cause hum. Microphone InputA high gain, low impedance microphone input is provided in this amplifier. It is designed to work with microphones like Bogen’s MBS1000 microphone. Connect the microphones black wire to the amplifiers - (negative) terminal under the MIC BAL connections. Connect the microphone’s Red wire to the + (positive) terminal. Connect the shield wire from the microphone to the adjacent GND terminal. Two conductor shielded microphone wire should be used to extend the cable from the microphone. 22 AWG shielded, twisted pair speaker cable will also work. When extending microphone cable, be sure to connect the shields of the microphone cable to the extension wire. Page 7 of 12 Figure 5: Connect Microphone to Telephone Paging Amplifier Bogen MBS1000 MIC MUSIC MUTE
Page 8 of 12 70V 25VCOM GNDTEL MIC BALGND+MUSIC MUTEMUSIC IN BRIDGINGTR PEAK LEVELPOWER MODEL TPU250 250 WATT AMPLIFIER ALC TEL VOLUME MIC VOLUME MUSIC VOLUME MUSIC MUTE RINGER VOLUME BASS TREBLE APHEX BOGEN COMMUNICATIONS VOX GNDMUSIC INCONTACT RINGTEL RINGAPHEX 70V 25VCOM GNDTEL MIC BALGND+MUSIC MUTEMUSIC IN BRIDGINGTR PEAK LEVELPOWER MODEL TPU250 250 WATT AMPLIFIER ALC TEL VOLUME MIC VOLUME MUSIC VOLUME MUSIC MUTE RINGER VOLUME BASS TREBLE APHEX BOGEN COMMUNICATIONS VOX GNDMUSIC INCONTACT RINGTEL RINGAPHEX TEL MIC BALGND+MUSIC MUTEMUSIC IN BRIDGINGTR MODEL TPU250 250 WATT AMPLIFIER ALC TEL VOLUME MIC VOLUME MUSIC VOLUME MUSIC MUTE RINGER VOLUME BOGEN COMMUNICATIONS GNDMUSIC INCONTACT RINGTEL RING APHEX TEL MIC BALGND+MUSIC MUTEMUSIC IN BRIDGINGTR MODEL TPU250 250 WATT AMPLIFIER ALC TEL VOLUME MIC VOLUME MUSIC VOLUME MUSIC MUTE RINGER VOLUME BOGEN COMMUNICATIONS GNDMUSIC INCONTACT RINGTEL RING APHEX Figure 6: Bridging Inputs Night Ringer ConnectionEither a standard telephone (analog) ring signal (90 - 105 V AC, 20 - 30 Hz) or an external contact closure activates the night ringer function of the amplifier. To activate the night ringer using standard telephone (analog) ring, connect the analog stations tip lead to the TEL RING T terminal and connect the ring lead to the R terminal. If using an external contact closure, connect the closure pair across the CONTACT RING terminals (not polarized). The night ringer follows the cadence of the activating signal. Bridging InputsBridging permits two amplifiers to be used in tandem with one another to increase the total output power of the system, thereby permitting additional speakers to be added (see Figure 6). For example, when two 250-watt amplifiers are bridged, the total output capacity of the system is 500 watts. However, bridging does not increase the size of the load a TPU250 can individually handle. Once bridged, each amplifier will amplify the inputs present on both amplifiers. The level control of a particular input on an amplifier will control the volume of this signal on both amplifiers. The cable used to bridge amplifiers should not exceed 20 feet in length. NO TE:You cannot bridge more than two TPU250 amplifiers at one time. TPU250 amplifiers can only be bridged with other TPU250 amplifiers. Input Cover ReplacementWhen all connections are made, remove an appropriate knockout on the input cover. Replace the cover and tighten the screws while dressing the wires through the knockout hole.
+
_
+
_
70V
25VCOM GND
70V
25VCOM GND
TEL MIC
BALGND+MUSIC
MUTEMUSIC IN
BRIDGINGTR
MODEL TPU250
250 WATT AMPLIFIER
ALC TEL VOLUME MIC VOLUMEBOGEN COMMUNICATIONS
GNDMUSIC
INCONTACT
RINGTEL
RINGAPHEX
Output WiringAll output wiring connections are made to the terminal strip located under the right
side access panel. Loosen the 2 Phillips-head screws on each side of the cover and
remove the cover.
IMPORTANT:Before making any connections or wiring changes to the amplifier
or any equipment connected to the amplifier, make sure that the amplifier is NOT
plugged into an AC outlet.
NO
TE:The amplifier does not have a power switch, so it must be unplugged in
order to turn the power off.
Speaker Connection70-volt speaker connections are made between the 70V and COM terminals on the
output terminal strip (see Figure 7). Use a 22 AWG shielded, twisted pair cable.
Connect the shield of the cable to the GND terminal of the output terminal strip.
The COM and GND terminals of the output terminal strip are connected using a
shorting clip. The shorting clip enables the amplifier output to act as an unbalanced
output (one side of the output connected to ground). If desired, the output can be
made to be a balanced output with no connection to ground. To balance the output,
simply remove the shorting clip. All speaker connections remain the same as above
including connecting the shield to the GND terminal.
NO
TE:The amplifier output terminal strip includes a terminal for 25V speaker
connections. This is provided for special applications and is generally not used.
Page 9 of 12
Figure 7: Speaker Connection, Output Wiring
Output Terminal Strip
Page10 of 12 Line-Matching TransformerAn RCA jack is provided near the output terminal strip for connection to a WMT1A ConnectorWMT1A line-matching transformer. A 600-ohm, balanced telephone level output signal can be obtained by plugging the RCA connector of the WMT1A line-matching transformer into this jack and taking the output signal off of the WMT1A line- matching transformer screw terminals (see Figure 9).This is useful for dividing a long line when connecting to remote equipment. Output Cover ReplacementWhen all output connections are made, remove the appropriate knockout on the input cover. Replace the cover and tighten the screws while dressing the wires through the knockout hole. ..... WMT-..A .......... .....CLASS 2 WIRING ACCEPTABLE Figure 9 : WMT1A Connection to RCA Jack on Amplifier Amplifier WMT1A RCA Jack Additional Power AmplifierAn external power amplifier can be used with the TPU250 amplifier. You must first add a resistor voltage divider to the telephone amplifier, as illustrated in Figure 8. Connect a patch cord to the high-level/high-impedance input of the booster amplifier. TO 25V OUTPUT TERMINAL TO HI-Z INPUT OF BOOSTER AMPLIFIER 39K 1/2 W 10K 1/2W TO COM ON TERMINAL STRIPFigure 8 : Output Circuitry