42004-319
Pub. 42004-319
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Model 701-312 Page/Party®
600-Ohm Handset/Speaker Amplifier
Confidentiality Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains sensitive
business and technical information that is confidential and proprietary to GAI-Tronics. GAI-Tronics
retains all intellectual property and other rights in or to the information contained herein, and such
information may only be used in connection with the operation of your GAI-Tronics product or system.
This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third party.
General Information
The Model 701-312 Page/Party® 600-Ohm Handset/Speaker Amplifier is an important component of a
GAI-Tronics Page/Party® system. This handset/speaker amplifier is ideal for applications that require long
cable runs. Use the Model 701-312 Handset/Speaker Amplifier in Page/Party® systems that require cable
runs exceeding one mile (1.6 km) from the system line balance assembly.
Installation
NOTE
Do not install the Model 701-312 in a 33-ohm system or audio levels will be low.
CAUTION
Do not install this equipment in hazardous areas. Installing in hazardous areas may cause a safety
hazard and consequent injury or property damage.
The Model 701-312 Handset/Speaker Amplifier is a plug-in amplifier that mates directly with the Model
702, 703, 732 and 733 Series Amplifier Enclosures. To install the handset/speaker amplifier, simply plug
it into the enclosure.
Figure 1 shows installation and adjustment details. Please refer to the drawing when you are installing and
adjusting the amplifier.
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA
610-777-1374 „ 800-492-1212 „ Fax: 610-796-5954
VISIT WWW .GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
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Model 701-312 Page/Party 600-Ohm Handset/Speaker Amplifier
Pub. 42004-319
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Figure 1. Installation and Adjustment Details
Operation
GAI-Tronics offers two types of Page/Party® systems: single party (one party line) and multi-party (five
party lines).
Single-Party
To initiate a call, lift the station handset and press and hold the handset pressbar. Speak directly into the
handset to make the page announcement. The paged individual lifts the handset of a Page/Party® station
for two-way communication over the party line.
Page/Multi-Party
Complete the following steps to make a page announcement:
1. Lift the handset from the cradle.
2. If party line conversation is desired, rotate the selector switch to an unoccupied party line.
3. Press and hold the handset pressbar.
4. Speak directly into the microphone to broadcast your announcement over the loudspeakers.
5. Release the handset pressbar, and if requested, wait for a response.
The paged individual(s) responds by picking up a station handset and turning the selector switch to the
requested party line. Party line communication, which is full duplex, is not broadcast over the system
speakers. Other individual(s) can also pick up and join the conversation at any time. Always return the
handset to the cradle following a page or a party line conversation.
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Model 701-312 Page/Party 600-Ohm Handset/Speaker Amplifier
Pub. 42004-319
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Maintenance
Adjustments
Four adjustments are accessible through the rear chassis of the amplifier using a small standard
screwdriver. Each adjustment is clearly labeled. The adjustments have been factory-set for optimal
performance. Do not adjust these levels unless you have followed all the steps in the Troubleshooting
section and are still not satisfied with the station performance.
•
Microphone Gain: adjusts the gain level from the microphone signal to the page or party lines
•
Receiver Sidetone: the amount of signal transmitted from the microphone to the receiver of a handset
•
Receiver Volume: adjusts the gain level from a party line to the receiver
•
Speaker Amplifier Gain: adjusts the speaker volume (also accessible from the front panel)
Troubleshooting
The following table lists some difficulties encountered in Page/Party® systems. Included are some
troubleshooting hints to aid in remedying these problems.
Problem
Any problem with station
performance occurs.
Solution
Review the steps of the installation, ensuring that you have correctly
followed ALL steps. Check all the terminations in the amplifier
enclosure and in the line balance assembly before proceeding to any
other adjustments.
Verify the system’s line balance assembly is a Model 305-002 or that the
existing line balance is set for 600-ohm operation.
Speaker level requires
adjustment.
1. Adjust the volume control behind the nameplate on the front panel.
Outgoing conversation level
requires adjustment.
1. Adjust the microphone gain by removing the amplifier from the
amplifier enclosure and attaching a Model 10440 Series extension
cable between the connectors. Use a small standard screwdriver
(1/8-inch blade) to slowly turn potentiometer (R17) on the rear
chassis of amplifier until reaching the proper microphone gain.
2. Replace the speaker or driver.
2. Replace the handset microphone.
Incoming conversation level
requires adjustment.
1. Use a small standard screwdriver to adjust the receiver volume
control on the rear of the amplifier using the Model 10440 Series
extension cable as described above.
2. Replace the receiver element in the handset.
Feedback/distortion (a hum or
buzz on the line) occurs during
all Page/Party® station
operation.
1. Adjust the receiver sidetone on the rear of the amplifier using the
ribbon cable assembly as described above.
2. The line may be improperly terminated. Inspect the system cable for
loose connections, shorts, and grounds. Line balance assembly
connections are critical.
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Model 701-312 Page/Party 600-Ohm Handset/Speaker Amplifier
Problem
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Solution
Feedback occurs only during
page.
Use the muting feature in the amplifier enclosure at the terminal blocks.
Connect the violet wire at terminal 8 to terminal 7.
Sidetone (how the operator
hears his own voice) requires
adjustment.
1. Adjust the receiver sidetone at the amplifier, using the extension
ribbon cable as described above.
Crosstalk occurs.
One or more system cable pairs may be improperly terminated. Visually
inspect the system cable connections for accidental crossing of the cable
pairs or grounds.
2. Check that the line balance assembly resistors are connected
properly.
Specifications
Amplifier
Power requirements
Voltage......................................................................... 90–140 V ac range, 50/60 Hz, 115 V ac nominal
Power consumed: Zero/max. signal (12 watts) .............................................10 VA, 4.5 W/50 VA, 27 W
Construction/finish........ ........................................................16-gauge cold-rolled steel/gray baked enamel
Handset
Microphone ........................................................................................................ Dynamic, noise-canceling
Receiver ........................................................................Dynamic, hearing aid compatible per FCC Part 68
Cable.........................................................................................................Retractile, 6-foot extended PVC
Material..................................................................................................................................... Gray ABS
External controls.................................................................................Push-to-page switch or push-to-page
handset pressbar, handset hook-switch
Handset Amplifier
Output level....................................................................................... 1.5 Vrms nominal into 600 ohm load
Output limiter .................................................................................................................1.5 Vrms nominal
Gain ................................................................................................... 55 dB nominal (below limiter level);
adjustable from 40 to 63 dB
Frequency response..............................................................................................250–4,000 Hz, +/-1.5 dB
Distortion .................................................................................................. 1.5% maximum THD @ 1 kHz
Controls..............................................................................Microphone gain, receiver volume and sidetone
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Model 701-312 Page/Party 600-Ohm Handset/Speaker Amplifier
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Speaker Amplifier
Output............................................................................... 12 watts minimum with nominal supply voltage
Voltage gain ............................................................................................................ 26 dB max, adjustable
Frequency response......................................................................... 250–4,000 Hz, +0, -3 dB ref. to 1 kHz
Distortion ...................................................................................... 1% maximum THD @ 1 kHz, 12 watts
Input impedance............................................................................................................. 50,000 ohms nom.
Controls................................................................................. Speaker volume (adjusted through the access
hole behind the nameplate on the front panel)
General
Temperature range (operating/storage) ............................................... -22º F to +158º F (-30º C to +70º C)
Dimensions..............................................8.1 H × 8.1 W × 3 D inches (20.6 × 20.6 × 7.6 cm) behind panel
8.1 H × 8.1 W × 3.5 D inches (20.6 × 20.6 × 8.9 cm) front of panel
Shipping weight .................................................................................................................6.8 lbs. (3.1 kg)
Replacement Parts
Part Number
Description
10112-101
Handset Assembly
13204-002
Receiver Cap
12511-001
Dynamic Transmitter and Cap
12525-001
Pressbar Switch Kit
12514-007
6-foot PVC Cord and Bushing
12514-008
15-foot PVC Cord and Bushing
12514-009
25-foot PVC Cord and Bushing
12514-004
6-foot Hytrel Cord and Bushing
12514-005
15-foot Hytrel Cord and Bushing
12514-006
25-foot Hytrel Cord and Bushing
69701-016
Printed Circuit Board
12523-001
GAI-Tronics Nameplate Kit
12508-005
Amplifier Enclosure Mounting Hardware
12512-008
Hookswitch/Cradle Assembly Kit
12530-001
Transformer/ Conn. Subassembly
25210-005
Cell Gasket
10440-002
16-pin ribbon cable connector
12604-001
0.7 amp (10 pack)
12604-002
1/16 amp (10 pack)
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Warranty
Equipment.
GAI-Tronics warrants for a period of one (1) year from the date of shipment, that any
GAI-Tronics equipment supplied hereunder shall be free of defects in material and workmanship, shall
comply with the then-current product specifications and product literature, and if applicable, shall be fit
for the purpose specified in the agreed-upon quotation or proposal document. If (a) Seller’s goods prove
to be defective in workmanship and/or material under normal and proper usage, or unfit for the purpose
specified and agreed upon, and (b) Buyer’s claim is made within the warranty period set forth above,
Buyer may return such goods to GAI-Tronics’ nearest depot repair facility, freight prepaid, at which time
they will be repaired or replaced, at Seller’s option, without charge to Buyer. Repair or replacement shall
be Buyer’s sole and exclusive remedy. The warranty period on any repaired or replacement equipment
shall be the greater of the ninety (90) day repair warranty or one (1) year from the date the original
equipment was shipped. In no event shall GAI-Tronics warranty obligations with respect to equipment
exceed 100% of the total cost of the equipment supplied hereunder. Buyer may also be entitled to the
manufacturer’s warranty on any third-party goods supplied by GAI-Tronics hereunder. The applicability
of any such third-party warranty will be determined by GAI-Tronics.
Services.
Any services GAI-Tronics provides hereunder, whether directly or through subcontractors,
shall be performed in accordance with the standard of care with which such services are normally
provided in the industry. If the services fail to meet the applicable industry standard, GAI-Tronics will
re-perform such services at no cost to buyer to correct said deficiency to Company's satisfaction provided
any and all issues are identified prior to the demobilization of the Contractor’s personnel from the work
site. Re-performance of services shall be Buyer’s sole and exclusive remedy, and in no event shall GAITronics warranty obligations with respect to services exceed 100% of the total cost of the services
provided hereunder.
Warranty Periods.
Every claim by Buyer alleging a defect in the goods and/or services provided
hereunder shall be deemed waived unless such claim is made in writing within the applicable warranty
periods as set forth above. Provided, however, that if the defect complained of is latent and not
discoverable within the above warranty periods, every claim arising on account of such latent defect shall
be deemed waived unless it is made in writing within a reasonable time after such latent defect is or
should have been discovered by Buyer.
Limitations / Exclusions.
The warranties herein shall not apply to, and GAI-Tronics shall not be
responsible for, any damage to the goods or failure of the services supplied hereunder, to the extent
caused by Buyer’s neglect, failure to follow operational and maintenance procedures provided with the
equipment, or the use of technicians not specifically authorized by GAI-Tronics to maintain or service the
equipment. THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE IN LIEU OF AND
EXCLUDE ALL OTHER WARRANTIES AND REMEDIES, WHETHER EXPRESS OR IMPLIED BY
OPERATION OF LAW OR OTHERWISE, INCLUDING ANY WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Return Policy
If the equipment requires service, contact your Regional Service Center for a return authorization number
(RA#). Equipment should be shipped prepaid to GAI-Tronics with a return authorization number and a
purchase order number. If the equipment is under warranty, repairs or a replacement will be made in
accordance with the warranty policy set forth above. Please include a written explanation of all defects to
assist our technicians in their troubleshooting efforts.
Call 800-492-1212 (inside the USA) or 610-777-1374 (outside the USA) for help identifying the
Regional Service Center closest to you.
(Rev. 10/06)
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