Hubbell GAI-TRONICS SmartSeries 701-902 User manual

Pub. 42004-658L2H
G A I - T R O N I C S ®
A H U B B E L L C O M P A N Y
701-902 SmartSeries® Handset/Speaker
Amplifier
TA B L E O F CO N T E N T S
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
Product Usage..........................................................................................................................................1
Features and Options..............................................................................................................................1
External Components.............................................................................................................................2
Internal Components..............................................................................................................................2
Block Diagram.........................................................................................................................................3
Interfaces .................................................................................................................................................4
Installation ......................................................................................................................................4
Minimum Level Adjustment.................................................................................................................4
Offset Level Adjustment.......................................................................................................................5
VLC (Volume Level Control) Adjustment (ADVANCE Systems only)..............................................5
Internal Adjustments..............................................................................................................................6
Station Address.....................................................................................................................................6
Handset Receiver Volume ....................................................................................................................6
Sidetone Volume...................................................................................................................................6
External Adjustments.............................................................................................................................6
Minimum Level Adjustment.................................................................................................................7
Offset Level Adjustment.......................................................................................................................7
VLC (Volume Level Control) Adjustment (ADVANCE Systems only)..............................................7
Internal Adjustments..............................................................................................................................8
Station Address.....................................................................................................................................8
Handset Receiver Volume ....................................................................................................................8
Sidetone Volume...................................................................................................................................8
Operation.........................................................................................................................................9
Page/Party Operation.............................................................................................................................9
Page Announcement .............................................................................................................................9
Party-Line Conversation.......................................................................................................................9
ADVANCE System Operation.............................................................................................................10
Page Confirmation Tone.....................................................................................................................10
Page and Party Line Operation ...........................................................................................................10
Optional Features..................................................................................................................................10
Maintenance..................................................................................................................................11
Service and Spare Parts........................................................................................................................11

Table of Contents Pub. 42004-658L2H
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Fuses.......................................................................................................................................................12
Troubleshooting....................................................................................................................................12
How to Diagnose Assembly Faults.......................................................................................................13
Specifications ................................................................................................................................15
Electrical................................................................................................................................................15
Speaker Amplifier.................................................................................................................................15
SmartVolume™.....................................................................................................................................15
Handset Amplifier.................................................................................................................................15
Mechanical.............................................................................................................................................15
Environmental.......................................................................................................................................15
Approvals.......................................................................................................................................15

Pub. 42004-658L2H
G A I - T R O N I C S ®
A H U B B E L L C O M P A N Y
701-902 SmartSeries® Handset/Speaker
Amplifier
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 ◼800-492-1212 ◼Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
Confidentiality Notice
This manual is provided solely as an installation, operation, 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.
The following are trademarks of GAI-Tronics Corporation:
SmartSeries®
Page/Party®
ADVANCE™
SmartVolumeTM
General Information
The No. 701-902 SmartSeries Handset/Speaker Amplifier provides the following functions:
•one-way page announcements over system speakers
•amplifies broadcast page announcements over the station’s speaker
•party-line (two-way) communication with other system users
•control interface for optional devices when installed in a SmartSeries enclosure in an ADVANCE
system
Product Usage
The Model 701-902 SmartSeries Handset/Speaker Amplifier is an intelligent handset/speaker amplifier
for use with GAI-Tronics’system cable in either standard Page/Party or ADVANCE systems.
Features and Options
•page and party line communication using the
integral handset
•*optional SmartSeries station RTU with
supervision of input and output devices
•ALS (Ambient Level Sensing) automatically
adjusts speaker volume relative to ambient
noise
•*optional party line end-of-line module for
supervision of party line one
•*handset monitoring and control
•*local speaker supervision
•*data and audio transmission on the system
cable
•*VLC (Volume Level Control) adjusts volume
to predefined level for priority pages
* requires installation in a system with an ADVANCE head end.

Pub. 42004-658L2H
701-902 SmartSeries® Handset/Speaker Amplifier Page 2 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
External Components
The handset/speaker amplifier assembly includes a handset and cradle (see Figure 1). A hookswitch
(magnetic reed switch) in the cradle signals the appropriate off-hook status to the microcontroller in the
assembly when the handset is removed from or placed in the cradle.
The user level adjustment control is located under the GAI-Tronics nameplate to the right of the cradle.
Figure 1. Front View
Internal Components
The assembly contains the following internal components or subassemblies (see Figure 2)
• chassis
• front panel attached to the front of the chassis
• handset amplifier/FSK/μP PCBA (printed circuit board assembly) (Ref. 14) attached to the rear of the
front panel
• speaker amplifier/power supply PCBA (Ref. 13) attached to the rear of the chassis, with a plug (P1)
at the top, pointing to the rear

Pub. 42004-658L2H
701-902 SmartSeries® Handset/Speaker Amplifier Page 3 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
Figure 2. Side View
Block Diagram
Connector P1 on the back of the speaker amplifier/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
amplifier/power supply PCBA contains the low voltage power supplies and the speaker amplifier
circuitry.
Connector J1A and J1B on the speaker amplifier/power supply PCBA connects regulated +5 V dc, +/−15
V dc, and V RLY voltages along with control, monitoring, and line signals to the J1A and J1B on the
handset amplifier/FSK/μP PCBA. Connector J2 on the speaker amplifier/power supply PCBA connects
to optional external devices.
The handset and hookswitch leads connect to the handset amplifier/FSK/μP PCBA via spade terminal
connectors E1 to E7.
Figure 3. Block Diagram

Pub. 42004-658L2H
701-902 SmartSeries®Handset/Speaker Amplifier Page 4 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
Interfaces
The assembly connects to the system cable, an external loudspeaker, and any auxiliary devices via the 16-
pin connector, P1,located on the speaker amplifier/power supply PCBA. Connector J2, on the bottom of
the speaker amplifier/power supply PCBA, connects to optional devices such as a SmartSeries RTU
(remote terminal unit) installed in specially designed enclosures. Other connections on the speaker
amplifier/power supply PCBA provide quick connection/disconnection of subassemblies.
All connections to the system cable must be made by qualified installation technicians. Direct questions
about these connections to GAI-Tronics’Field Service Department at 800-492-1212 inside the USA or
610-777-1374 outside the USA.
Installation
CAUTION
—Do not install this equipment in hazardous areas other than those indicated on
the approval listing in the Approvals 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 No. 701-902 SmartSeries Handset/Speaker Amplifier plugs directly into any standard GAI-Tronics
700 series enclosure. It also plugs into the following specialized SmartSeries enclosures:
•SmartSeries station RTU enclosure
•EPL (Emergency Party Line) enclosure
•EOL (End-of-Line) party-line module enclosure.
1. Connect the 10-conductor keyed ribbon cable to J2 on the bottom of the speaker amplifier/power
supply PCBA with the red trace on the ribbon cable edge lined up with J2 pin one.
This is required when these amplifiers are installed in a SmartSeries enclosure.
NOTE:Do not damage the protruding latch wings of connector J2 located on the bottom edge of the
amplifier during installation.
2. Configure the station address (see the External Adjustments
The user level adjustment control is located on the front panel behind the GAI-Tronics nameplate (see
Figure 1). Use the user adjustment control potentiometer 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
The factory default setting for minimum level is 4.0 watts nominal. To set the minimum amplifier output
level:
1. Loosen the two screws on the GAI-Tronics nameplate and rotate it counterclockwise.
2. Insert a 1/8-inch flat blade screwdriver through the access hole and into the potentiometer.

Pub. 42004-658L2H
701-902 SmartSeries®Handset/Speaker Amplifier Page 5 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
3. Turn the user adjustment control fully counterclockwise.
4. Listen for a single beep from the speaker indicating the speaker amplifier is in the minimum level
adjustment mode.
If the page line is in use immediately after the beep tone is heard: use the page signal as the reference
to adjust the speaker volume level.
If the page line is inactive following the beep tone: a continuous tone is activated to make the
minimum level adjustment. All page line activity is ignored until completion of the adjustment once
the tone is activated. Use the test tone as a reference to adjust the speaker amplifier output level to
the desired volume.
3. Turn the adjustment potentiometer clockwise for the desired output.
The test tone automatically shuts off 5 seconds after the last 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.
1. Loosen the two screws on the GAI-Tronics nameplate and rotate it counterclockwise.
2. Insert a 1/8-inch flat blade screwdriver through the access hole and into the potentiometer.
3. Turn the user adjustment control fully clockwise.
4. Listen for two beep tones indicating that the station is in offset adjustment mode.
If the page line is in use immediately after the beep tone is heard: use the page signal as the reference
to adjust the speaker volume level.
If the page line is inactive following the beep tone: a continuous tone is activated to make the
minimum level adjustment. All page line activity is ignored until completion of the adjustment once
the tone is activated. Use the test tone as a reference to adjust the speaker amplifier offset level to the
desired volume.
5. Turn the adjustment potentiometer counterclockwise to the desired output level.
The test tone automatically shuts off 5 seconds after the last adjustment.
VLC (Volume Level Control) Adjustment (ADVANCE Systems only)
VLC overrides the normal volume control setting. This allows changing the amplifier level 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.
1. Force the station into the VLC mode by executing a page from a station programmed by the MCU to
activate the VLC function.
2. Turn the user adjustment control fully counterclockwise during the page.
3. Listen for two beep tones through the page speaker indicating VLC adjustment mode is active.
4. 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 potentiometer adjustment.

Pub. 42004-658L2H
701-902 SmartSeries®Handset/Speaker Amplifier Page 6 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
Internal Adjustments
The station address, sidetone volume level, and handset receiver volume level are adjusted internally (see
Figure 2). Turn the control clockwise to increase the volume or threshold; turn it counterclockwise to
decrease the volume or threshold.
Station Address
SmartSeries stations in ADVANCE systems must be assigned a unique address using the hexadecimal
switches, S1 (Hi Address) and S2 (Lo Address) for the SmartSeries option to function properly (see
Figure 2).
•Each switch contains 16 settings, labeled 0–F. A small arrow on each switch indicates the setting.
•The station address is determined by the high address setting followed by the low address setting.
For example, to assign an address of 05, the high station address switch, S1,is set to 0 and the low
address switch, S2,is set to 5.
•Valid address settings are 05 to FE.
•Record the address assigned to each station in the system.
•Set the address to 04 (default) if the SmartSeries PCBA is installed in a system without an
ADVANCE head end.
NOTE:The following level adjustments are not typically required.
Handset Receiver Volume
Use the control labeled RCVR VOL (see Figure 2 Ref. 7, on the Handset/FSK/P PCBA) to adjust the
handset receiver volume to the desired level for voice signals from a party line.
Sidetone Volume
The control labeled SIDETONE (see Figure 2 Ref. 4, on the Handset/FSK/P PCBA) adjusts the
handset/headset sidetone.
4. section).
5. Ensure that connector P1 mates securely with the receptacle in the enclosure and then tighten the four
screws at the corners of the amplifier’s front panel.
6. Make all necessary audio level adjustments (see the External Adjustments and Internal Adjustments
sections).
External Adjustments
The user level adjustment control is located on the front panel behind the GAI-Tronics nameplate (see
Figure 1). Use the user adjustment control potentiometer 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).

Pub. 42004-658L2H
701-902 SmartSeries®Handset/Speaker Amplifier Page 7 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
Minimum Level Adjustment
The factory default setting for minimum level is 4.0 watts nominal. To set the minimum amplifier output
level:
5. Loosen the two screws on the GAI-Tronics nameplate and rotate it counterclockwise.
6. Insert a 1/8-inch flat blade screwdriver through the access hole and into the potentiometer.
7. Turn the user adjustment control fully counterclockwise.
8. Listen for a single beep from the speaker indicating the speaker amplifier is in the minimum level
adjustment mode.
If the page line is in use immediately after the beep tone is heard: use the page signal as the reference
to adjust the speaker volume level.
If the page line is inactive following the beep tone: a continuous tone is activated to make the
minimum level adjustment. All page line activity is ignored until completion of the adjustment once
the tone is activated. Use the test tone as a reference to adjust the speaker amplifier output level to
the desired volume.
7. Turn the adjustment potentiometer clockwise for the desired output.
The test tone automatically shuts off 5 seconds after the last 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.
9. Loosen the two screws on the GAI-Tronics nameplate and rotate it counterclockwise.
10. Insert a 1/8-inch flat blade screwdriver through the access hole and into the potentiometer.
11. Turn the user adjustment control fully clockwise.
12. Listen for two beep tones indicating that the station is in offset adjustment mode.
If the page line is in use immediately after the beep tone is heard: use the page signal as the reference
to adjust the speaker volume level.
If the page line is inactive following the beep tone: a continuous tone is activated to make the
minimum level adjustment. All page line activity is ignored until completion of the adjustment once
the tone is activated. Use the test tone as a reference to adjust the speaker amplifier offset level to the
desired volume.
13. Turn the adjustment potentiometer counterclockwise to the desired output level.
The test tone automatically shuts off 5 seconds after the last adjustment.
VLC (Volume Level Control) Adjustment (ADVANCE Systems only)
VLC overrides the normal volume control setting. This allows changing the amplifier level 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.
14. Force the station into the VLC mode by executing a page from a station programmed by the MCU to
activate the VLC function.

Pub. 42004-658L2H
701-902 SmartSeries®Handset/Speaker Amplifier Page 8 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
15. Turn the user adjustment control fully counterclockwise during the page.
16. Listen for two beep tones through the page speaker indicating VLC adjustment mode is active.
17. 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 potentiometer adjustment.
Internal Adjustments
The station address, sidetone volume level, and handset receiver volume level are adjusted internally (see
Figure 2). Turn the control clockwise to increase the volume or threshold; turn it counterclockwise to
decrease the volume or threshold.
Station Address
SmartSeries stations in ADVANCE systems must be assigned a unique address using the hexadecimal
switches, S1 (Hi Address) and S2 (Lo Address) for the SmartSeries option to function properly (see
Figure 2).
•Each switch contains 16 settings, labeled 0–F. A small arrow on each switch indicates the setting.
•The station address is determined by the high address setting followed by the low address setting.
For example, to assign an address of 05, the high station address switch, S1, is set to 0 and the low
address switch, S2, is set to 5.
•Valid address settings are 05 to FE.
•Record the address assigned to each station in the system.
•Set the address to 04 (default) if the SmartSeries PCBA is installed in a system without an
ADVANCE head end.
NOTE:The following level adjustments are not typically required.
Handset Receiver Volume
Use the control labeled RCVR VOL (see Figure 2 Ref. 7, on the Handset/FSK/P PCBA) to adjust the
handset receiver volume to the desired level for voice signals from a party line.
Sidetone Volume
The control labeled SIDETONE (see Figure 2 Ref. 4, on the Handset/FSK/P PCBA) adjusts the
handset/headset sidetone.
Perform the following steps to adjust the handset receiver or sidetone volume:
NOTE:Use a small flat-blade screwdriver with an insulated shaft.
1. Loosen the four screws that secure the front panel.
2. Remove the assembly from the enclosure.
NOTE:Do not disconnect the ribbon cable from connector J2 of the speaker amplifier/power supply
PCBA if the enclosure is equipped with an optional EOL module or SmartSeries station
RTU.