GAI-Tronics 709-901 User manual

Pub. 42004-699L2D
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
Model 709-901
SmartSeries Handset/Speaker Amplifier
TABLE OF CONTENTS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
System Requirements and Limitations.................................................................................................1
Features and Functions ..........................................................................................................................2
Description of Major Components........................................................................................................2
External Components............................................................................................................................................2
Internal Components.............................................................................................................................................3
Block Diagram.........................................................................................................................................4
Interfaces .................................................................................................................................................4
Installation ......................................................................................................................................5
Models 707-001-UL/EX and -EX-F07045.............................................................................................5
Models 708-001-UL/EX, -EX-F07048, 7085-001-UL/EX, -EX-F07044, 7085-004-UL/EX and -EX-
F07049......................................................................................................................................................5
Models 7085-005-UL/EX and -EX-F07050...........................................................................................6
Operation.........................................................................................................................................6
Handset Operation..................................................................................................................................6
Optional Features....................................................................................................................................7
Maintenance....................................................................................................................................7
Fuses.........................................................................................................................................................7
Adjustments.............................................................................................................................................8
Minimum Level Adjustment.................................................................................................................................8
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
Replacement Parts................................................................................................................................13
Specifications ................................................................................................................................14

PUB.42004-699L2D
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
Model 709-901
SmartSeries 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
This document discusses installing, operating, and maintaining the Model 709-901 SmartSeries
Handset/Speaker Amplifier. It 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
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 Model 709-901 SmartSeries Handset/Speaker Amplifier is designed to provide an intelligent handset
for use on the GAI-Tronics multi-party system cable in either a standard Page/Party®system or an
ADVANCE system.
The Model 709-901 SmartSeries Handset/Speaker Amplifier is designed for use only with SmartSeries
hazardous area equipment. This equipment includes the following enclosure models:
707-001-UL/EX; -EX-F07045 UL Listed SmartSeries Amplifier Enclosures
708-001-UL/EX; -EX-F07048 UL Listed SmartSeries Single Party Enclosures
7085-001-UL/EX; -EX-F07044 UL Listed SmartSeries Multi-Party Enclosures
7085-004-UL/EX; -EX-F07049 UL Listed SmartSeries Multi-Party Enclosures with Alternate Page*
7085-005-UL/EX; -EX-F07050 UL Listed SmartSeries Multi-Party Enclosures with RTU Control*
*NOTE:The models with Alternate Page and RTU Control features must be installed in an ADVANCE
cabinet system.
The Model 709-901 SmartSeries Handset/Speaker Amplifier contains all of the necessary connectors for
use with any of the models listed above. Some connectors will not be used on all models.

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Features and Functions
Monitors and controls the handset and
auxiliary connections, if equipped.

Supports an optional SmartSeries station RTU, which
monitors and supervises input and output devices.
Measures the ambient noise and adjusts
the speaker output level accordingly.

Supports an optional party line End-of-Line Module,
which supervises party line 1.
Supervises the local speaker.

Transfers data messages and audio on the system cable.
Description of Major Components
This assembly includes external components accessible to the user as well as internal components or
subassemblies.
External Components
As shown on the bottom view of Figure 1, the assembly includes a connector for the push-to-page
operator, a hookswitch and handset connector, and a connector for the RTU connection. When the
handset on the front of the enclosure is lifted from the cradle or replaced in the cradle, a hookswitch (a
magnetic reed switch) signals the appropriate status to the microcontroller within the assembly. In the
center of the front panel, the GAI-Tronics nameplate conceals the User Level Adjustment control.
Figure 1. Model 709-901 Outline Drawing

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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/P PCBA (printed circuit board assembly) (Ref. 14) affixed to the rear of the
front panel
Speaker Amp/Power Supply PCBA (Ref. 13) 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/P PCBA. Connector J2 of the Speaker Amp/Power Supply PCBA connects to optional
external devices.
The Handset Amp/FSK/P PCBA has connections to the handset, hookswitch, and push-to-page operator
on the front of the hazardous enclosure. The PCBA’s terminal connectors E1 to E7 connect to the 2-point
and 6-point connectors in the bottom of the amplifier enclosure.
Figure 3. Block Diagram
Interfaces
The assembly interfaces to the system cable, an external loud speaker, 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.

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Installation
CAUTION Do not install this equipment in hazardous areas other than in an approved
enclosure, or 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.
WARNING Do not disconnect equipment while energized.
The Model 709-901 SmartSeries Handset/Speaker Amplifier assembly plugs directly into the following
GAI-Tronics SmartSeries hazardous area enclosures listed below. Use extra care not to damage the
protruding latch wings of connector J2 located on the bottom edge of the amplifier during installation.
707-001-UL/EX; -EX-F07045 UL Listed SmartSeries Amplifier Enclosures
708-001-UL/EX; -EX-F07048 UL Listed SmartSeries Single Party Enclosures
7085-001-UL/EX; -EX-F07044 UL Listed SmartSeries Multi-Party Enclosures
7085-004-UL/EX; -EX-F07049 UL Listed SmartSeries Multi-Party Enclosures with Alternate Page*
7085-005-UL/EX; -EX-F07050 UL Listed SmartSeries Multi-Party Enclosures with RTU Control*
Models 707-001-UL/EX and -EX-F07045
Ensure that the connectors mate securely and then tighten the four screws in the corners of the front panel.
Tighten to 10 to 12 in-lb. or 1.13 to 1.36 N-m.
Models 708-001-UL/EX, -EX-F07048, 7085-001-UL/EX, -EX-F07044, 7085-004-
UL/EX and -EX-F07049
1. When installing the amplifier in these enclosures, connect the 2-point plug cable from the push-to-
page operator to the 2-point receptacle on the bottom of the amplifier chassis.
2. Connect the 6-point plug cable from the hookswitch and handset to the 6-point receptacle on the
bottom of the amplifier chassis.
3. Ensure that the connectors mate securely and then tighten the four screws in the corners of the front
panel. Tighten to 10 to 12 in-lb. or 1.13 to 1.36 n-m.

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Models 7085-005-UL/EX and -EX-F07050
1. When installing the amplifier in this enclosure, connect the 2-point plug cable from the push-to-page
operator to the 2-point receptacle on the bottom of the amplifier chassis.
2. Connect the 6-point plug cable from the hookswitch and handset to the 6-point receptacle on the
bottom of the amplifier chassis.
3. 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.
4. Ensure that the connectors mate securely and then tighten the four screws in the corners of the front
panel. Tighten to 10 to 12 in-lb. or 1.13 to 1.36 n-m.
Operation
Note regarding the busy tone: A busy tone is heard in the receiver when either of the following occurs:
a higher priority page 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 push-to-page operator.
4. Make your announcement when the wait tone stops. If the page resource is already in use, you will
hear a busy tone. Release the push-to-page operator, and then try again.
5. Release the push-to-page operator.
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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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.
Fuses
WARNING
Do not remove fuses when energized. Replace with the same type and size fuse.
F1 = 0.2A, 250V, 0.251.25 inches, Slo-Blo type, UL Listed
F2 = 0.7A, 250V, 0.251.25 inches, Slo-Blo type, UL Listed
F3 = 0.15A, 250V, 0.251.25 inches, Slo-Blo type, UL Listed

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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:
the minimum Speaker Amplifier output level setting
the Offset Amplifier level (difference between the ambient noise and the amplifier output levels)
the 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.

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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 adjustments.
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 Master Control Unit (MCU) to activate the
VLC function.
To adjust the VLC Level:
1. Force the station into the VLC mode by having someone execute a page from a station programmed
by the MCU to activate the VLC function.
2. During the page, turn the User Adjustment Control fully counterclockwise, and listen for two beep
tones through the page speaker indicating the VLC Adjustment mode has been activated.
3. After the two beep tones, turn the User Adjustment Control to the desired speaker level using the live
paging signal to adjust the level. The station automatically exits the VLC Adjustment mode and
reverts to normal operation 5 seconds after the last pot adjustment.