Pub.: 42004-719L2B
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
701-904 SmartSeries Handset/Speaker
Amplifier with Auxiliary Jack
T ABLE OF C ONTENTS
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
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
PUB. 42004-719L2B
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
701-904 SmartSeries Handset/Speaker
Amplifier with Auxiliary Jack
Confidential ity 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
ADVANCE system.
®
system or an
Features and Functions
• Provides page and party line communications
from the integral handset or an auxiliary headset
connected to the front panel.
• Measures the ambient noise and adjust the speaker
output level accordingly.
• Monitors and controls the handset and auxiliary
connections, if equipped.
• Supervises the local speaker.
• Supports an optional SmartSeries station
RTU that monitors and supervises input and
output devices.
• Support an optional party line End-of-Line
module that supervises party line 1.
• Transfers data messages and audio on the
system cable.
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Pub. 42004-719L2B
701-904
SMARTSERIES HANDSET/SPEAKER AMPLIFIER WITH AUXILIARY JACK PAGE 2 of 15
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 701904 SmartSeries Handset/Speaker Amplifier contains an auxiliary jack for a 10401-201
Headset/Microphone Assembly and a 10416-103 Extension Cable.
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Figure 1. Front View
Pub. 42004-719L2B
701-904
Internal Components
SMARTSERIES HANDSET/SPEAKER AMPLIFIER WITH AUXILIARY JACK PAGE 3 of 15
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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701-904
SMARTSERIES HANDSET/SPEAKER AMPLIFIER WITH AUXILIARY JACK PAGE 4 of 15
Block Diagram
Pub. 42004-719L2B
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
V
voltages along with control, monitoring, and line signals to the J1A and J1B on the Handset
RLY
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.
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Figure 3. Block Diagram
Pub. 42004-719L2B
701-904
SMARTSERIES HANDSET/SPEAKER AMPLIFIER WITH AUXILIARY JACK PAGE 5 of 15
Interfaces
The assembly interfaces to the system cable an external loudspeaker and auxiliary devices via P1, a 16pin 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 haza rdou s areas other than those ind ica ted
on the approval listing in the “Specifications” section of this manual. Such installation may caus e 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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