GAI-Tronics 701-904 SmartSeries User manual

Pub.: 42004-719L2B
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
701-904 SmartSeries Handset/Speaker
Amplifier with Auxiliary Jack
TABLE OF CONTENTS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
Product Overview ...................................................................................................................................1
System Requirements and Limitations.................................................................................................1
Features and Functions ..........................................................................................................................1
Description of Major Components........................................................................................................2
External Components............................................................................................................................................2
Internal Components.............................................................................................................................................3
Block Diagram.........................................................................................................................................4
Interfaces .................................................................................................................................................5
Installation ......................................................................................................................................5
Operation.........................................................................................................................................6
Handset Operation..................................................................................................................................6
Page Announcement .............................................................................................................................................6
Party-Line Conversation .......................................................................................................................................6
Auxiliary Headset Operation.................................................................................................................7
Page Announcement .............................................................................................................................................7
Party-Line Conversation .......................................................................................................................................7
Optional Features....................................................................................................................................8
Maintenance....................................................................................................................................8
Adjustments.............................................................................................................................................9
Minimum Level Adjustment.................................................................................................................................9
Offset Level Adjustment.......................................................................................................................................9
VLC Level Adjustment.........................................................................................................................................9
Internal Adjustments............................................................................................................................10
Sidetone Volume and Handset Receiver Volume ...............................................................................................10
Troubleshooting....................................................................................................................................11
How to Diagnose Assembly Faults.......................................................................................................12
Specifications ................................................................................................................................14
Replacement Parts................................................................................................................................15

PUB.42004-719L2B
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
701-904 SmartSeries Handset/Speaker
Amplifier with Auxiliary Jack
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
Product Overview
This document discusses installation, operation, and maintenance of the 701-904 SmartSeries
Handset/Speaker Amplifier with Auxiliary Jack, which provides the following features:
•Supports one-way page announcements over system speakers
•Serves as an amplifier to broadcast page announcements over the station’s speaker
•Supports party-line (two-way) communication with other system users
•Supports the attachment of an auxiliary headset
•Serves as a control interface to optional devices such as the party line End-of-Line module or the
SmartSeries station remote terminal unit (RTU) when installed into a SmartSeries RTU enclosure.
System Requirements and Limitations
The 701-904 SmartSeries Handset/Speaker Amplifier with Auxiliary Jack is designed to provide an
intelligent handset for use on the GAI-Tronics system cable in either a standard Page/Party®system or an
ADVANCE system.
Features and Functions
•Provides page and party line communications
from the integral handset or an auxiliary headset
connected to the front panel.
•Supports an optional SmartSeries station
RTU that monitors and supervises input and
output devices.
•Measures the ambient noise and adjust the speaker
output level accordingly.
•Support an optional party line End-of-Line
module that supervises party line 1.
•Monitors and controls the handset and auxiliary
connections, if equipped.
•Transfers data messages and audio on the
system cable.
•Supervises the local speaker.

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Description of Major Components
The 701-904 Handset/Speaker Amplifier includes external components accessible to the user as well as
internal components or subassemblies.
External Components
As shown from the front in Figure 1, the assembly includes a handset and cradle. When the handset is
lifted from the cradle or replaced in the cradle, a hookswitch (a magnetic reed switch) in the cradle signals
the appropriate status to the microcontroller within the assembly.
The GAI-Tronics nameplate conceals the access hole for the User Level Adjustment control. The 701-
904 SmartSeries Handset/Speaker Amplifier contains an auxiliary jack for a 10401-201
Headset/Microphone Assembly and a 10416-103 Extension Cable.
Figure 1. Front View

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Internal Components
As shown from the side in Figure 2, the assembly contains the following components or subassemblies:
•Chassis
•Front panel affixed to the front of the chassis
•Handset Amp/FSK/µP PCBA (printed circuit board assembly) (Ref. 15) affixed to the rear of the
front panel
•Speaker Amp/Power Supply PCBA (Ref. 14) affixed to the rear of the chassis, with a plug (P1) at the
top, pointing to the rear
Figure 2. Side View

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Block Diagram
The P1 connector on the back of the Speaker Amp/Power Supply PCBA plugs into a socket in an
enclosure connected to the system cable, accessing the Page/Party®lines and ac power. The Speaker
Amp/Power Supply PCBA contains the low voltage power supplies and the speaker amplifier circuitry.
Connector J1A and J1B on the Speaker Amp/Power Supply connects regulated +5 V dc, +/-15 V dc, and
VRLY voltages along with control, monitoring, and line signals to the J1A and J1B on the Handset
Amp/FSK/µP PCBA. Connector J2 of the Speaker Amp/Power Supply PCBA connects to optional
external devices.
The Handset Amp/FSK/µP PCBA has connections to the handset and the hookswitch via spade terminal
connectors E1 to E7, and it has connections to the optional front panel auxiliary connector, via J4.
Figure 3. Block Diagram

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Interfaces
The assembly interfaces to the system cable an external loudspeaker and auxiliary devices via P1, a 16-
pin connector. All connections to the system cable are made by qualified installation technicians during
the system installation.
Direct questions about these connections to the GAI-Tronics Field Service Department at 800-492-1212
inside the USA or 610-777-1374 outside the USA. Other connections on the Speaker Amp/Power Supply
PCBA provide quick connect/disconnect of subassemblies.
Connector J2 on the bottom of the Speaker Amp/Power Supply PCBA connects to optional devices such
as the SmartSeries Remote Terminal Unit (RTU) installed in specially designed enclosures.
Installation
CAUTION Do not install this equipment in hazardous areas other than those indicated
on the approval listing in the “Specifications” section of this manual. Such installation may cause a
safety hazard and consequent injury or property damage.
The 701-904 SmartSeries Handset/Speaker Amplifier with Auxiliary Jack assembly plugs directly into
any standard GAI-Tronics 700 series enclosure. Use extra care not to damage the protruding latch wings
of connector J2 located on the bottom edge of the amplifier during installation.
It also plugs into standard SmartSeries enclosures such as a SmartSeries station RTU enclosure, an
Emergency Party Line (EPL) enclosure, or an enclosure that houses a party line End-of-Line (EOL)
module. When installing the assembly in one of these enclosures, you must also connect the 10-
conductor keyed ribbon cable to J2 on the bottom of the Speaker Amp/Power Supply PCBA. Be sure
that the red line on the edge of the cable lines up with J2-pin 1.
Ensure that the connectors mate securely and then tighten the four screws in the corners of the front panel.

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Operation
This section describes operating the SmartSeries Handset/Speaker Amplifier with Auxiliary Jack with
either the handset or the auxiliary headset, if equipped.
Note regarding the busy tone: A busy tone is heard in the receiver when either of the following occurs:
•a page of a higher priority is in progress
•a page is attempted within one second of a previous page
Handset Operation
The handset allows the user to make page announcements and conduct party-line conversations.
Page Announcement
To make a page announcement for a party-line conversation, perform the following steps:
1. Lift the handset from the cradle.
2. Select an available party line.
3. Press the handset pressbar.
4. Make your announcement when the wait tone stops. If the page resource is already in use, you hear a
busy tone. Release the handset pressbar, then try again.
5. Release the handset pressbar.
6. When the party answers conduct your conversation.
7. Replace the handset in the cradle at the end of the conversation.
Party-Line Conversation
To conduct a party-line conversation perform the following steps:
1. For a multi-party enclosure select the appropriate party line.
2. Lift the handset from the cradle.
3. Conduct your conversation.
4. Replace the handset in the cradle when the conversation is finished.

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Auxiliary Headset Operation
The auxiliary headset allows the user to make page announcements and conduct party-line conversations
hands-free from up to 30 feet from the station, while providing noise reduction for hearing protection.
When an auxiliary headset/cable assembly is plugged into the auxiliary jack, a party-line connection is
automatically established (the same as lifting the handset).
NOTES:
1. Allowing the auxiliary headset to remain plugged in for a long period of time may disable party-line
communication. This condition is controlled by the off-hook time-out setting, which can be
programmed for 1 to 25 minutes in 1-minute steps (the factory default is 8 minutes) or it can be
disabled. This feature ensures that a station unintentionally left connected to a party line will not
induce unwanted background noise onto the party line. If party-line communication is disabled,
unplug the auxiliary headset, then plug it back in.
2. The auxiliary headset has priority over the handset. When the user lifts the handset from the cradle
while the auxiliary headset is in use, the handset’s microphone and page switch are disabled, but the
handset receiver remains active.
3. This application requires the GAI-Tronics 10401-201 Headset/Microphone Assembly and 10416-103
Extension Cable.
Page Announcement
To make a page announcement for a party-line conversation, perform the following steps:
1. Plug the auxiliary headset/cable assembly into the auxiliary jack on the front panel.
2. Press the headset page switch.
3. Make your announcement when the wait tone stops.
If the page resource is already in use you hear a busy tone. Release the headset page switch, then try
again.
4. Release the headset page switch.
5. When the party answers, conduct your conversation.
6. Unplug the auxiliary headset/cable assembly when the conversation has ended.
Party-Line Conversation
To conduct a party-line conversation, perform the following steps:
1. For a multi-party enclosure, select the appropriate party line.
2. Plug the auxiliary headset/cable assembly into the auxiliary jack on the front panel.
3. Conduct your conversation.
4. When you are finished, unplug the auxiliary headset/cable assembly.

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Optional Features
The following features are available as options to the standard configuration of a station used in an
ADVANCE system and installed in a standard SmartSeries or a custom enclosure. These features can be
configured. Contact the GAI-Tronics Field Service Department at 800-492-1212 inside the USA or 610-
777-1374 outside the USA for further information about these features.
•The Selected Page Destination feature allows the manual selection of one of four page destinations.
•The Supervised Input feature allows the monitoring and supervision of one or two initiating device
circuits (IDCs), initiating an alarm when the supervised device is activated.
•The Power Relay module provides a relay contact output, typically to switch power to a visual
signaling device, for directed or relay group operation. Supervision of the controlled device’s cable
can also be enabled.
•The Station Emergency Party Line feature supports annunciation for two party lines.
Maintenance
Regular inspection and a good preventive maintenance program will increase the reliability of your
GAI-Tronics station. The GAI-Tronics Field Service Department can formulate a service contract suited
to your facility’s specific need for preventive maintenance.
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 the return authorization number and a
purchase order number. If the equipment is under warranty, repairs will be made without charge. Please
include a written explanation of all defects to assist our technicians in their troubleshooting efforts. Call
800-492-1212 for help in identifying the Regional Service Center closest to you.
WARNING Before performing any of the following preventive maintenance steps, remove
all power from the station.
1. Inspect and replace frayed or cracked wiring.
2. Secure/replace loose wires and spade terminals.
3. Remove corrosion from terminals.
There are three replaceable fuses (F1, F2, and F3) mounted on the Speaker Amp/Power Supply PCBA
(Figure 2).
•Fuse F1 protects the low voltage power supply circuits. Replace with GAI-Tronics part number
51801-027.
•Fuse F2 protects the current to the speaker amplifier. Replace with GAI-Tronics part number
51801-003.
•Fuse F3 limits the amount of current to any external device connected to J2. Replace with
GAI-Tronics part number 51801-024.

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Adjustments
The User Adjustment Control is located beneath the GAI-Tronics nameplate on the front panel. Refer to
Figure 1. It is used to make all user adjustments normally required for installation. Loosen the two
screws on the GAI-Tronics nameplate and rotate it counterclockwise to access the adjustment hole. Make
adjustments by inserting a 1/8-inch flat blade screwdriver through the access hole and into the
potentiometer located directly behind the hole.
The User Adjustment Control potentiometer can be used to make three separate adjustments:
•Minimum speaker amplifier output level setting
•Offset amplifier level (difference between the ambient noise and the amplifier output levels)
•VLC (volume level control) adjustment
(sets a preset speaker level to override the normal volume control setting).
Minimum Level Adjustment
To set the minimum amplifier output level, insert the 1/8-inch flat blade screwdriver into the User
Adjustment Control and set it fully counterclockwise. Listen for a single beep from the speaker
indicating the speaker amplifier is in the Minimum Level Adjustment mode. A continuous tone should be
heard after the beep tone. (See note below).
This test tone is used as a reference to adjust the speaker amplifier output level to the desired volume.
Turn the adjustment pot clockwise for the desired output. The test tone automatically shuts off 5 seconds
after the last adjustment. The factory default setting for minimum level is 4.0 watts nominal.
NOTE:If the page line is in use immediately after the beep tone, the page signal should be used to make
the minimum level adjustment. If the page line is inactive following the beep tone, a continuous tone is
activated to make the minimum level adjustment. After the tone is activated, all page line activity is
ignored until completion of the adjustment.
Offset Level Adjustment
The Offset Level allows the output of the SmartVolume™ speaker amplifier to maintain a set difference
or “offset” between the ambient noise level and the speaker output level. Turn the User Adjustment
Control fully clockwise and listen for the two beep tones indicating that the station is in the Offset
Adjustment mode. A continuous tone should be heard from the station speaker. Turn the adjustment pot
counterclockwise to the desired output level.
NOTE:If the page line is in use immediately after the two beep tones are heard, the page signal should be
used to make the offset level adjustment. If the page line is inactive immediately following the beep
tones, a continuous tone is activated to make the minimum level adjustment. After the tone is activated,
all page line activity is ignored until completion of the adjustment.
VLC Level Adjustment
When activated, the VLC overrides the normal volume control setting allowing the amplifier level to
change to a preset level during an emergency page. The factory default setting for the VLC Level is 10%
of maximum power (nominally 1.2 watts).
NOTE:The system must be equipped with a SmartSeries MCU (Master Control Unit) to activate the
VLC function.