GAI-Tronics DHF-101 User manual

Pub.: 42004-383D
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 DHS/DHF Series
Digital Intercom Stations
TABLE OF CONTENTS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
Product Overview ...................................................................................................................................1
System Requirements and Limitations.................................................................................................1
Features and Functions ..........................................................................................................................2
Available Models.....................................................................................................................................3
Wall-Mount Handset Intercoms (Indoor/Outdoor) ...............................................................................................3
Wall-Mount Hands-free Intercoms (Indoor/Outdoor)...........................................................................................3
Flush-Mount Hands-free Intercoms ......................................................................................................................3
Description of Major Components........................................................................................................4
Installation ......................................................................................................................................5
General Information...............................................................................................................................5
Station Placement .................................................................................................................................................5
Mounting..................................................................................................................................................6
Models DHS-101, DHF-101, and DHF-102 .........................................................................................................6
Models DHF-103 and DHF-104 ...........................................................................................................................7
Conduit Installation................................................................................................................................8
Metallic Conduit Installation Details ....................................................................................................................8
Field Wire Installation............................................................................................................................9
Power ....................................................................................................................................................................9
System.................................................................................................................................................................11
Audio ..................................................................................................................................................................11
Audio Level Adjustments ...................................................................................................................................12
Switch Configuration..........................................................................................................................................15
Inputs ..................................................................................................................................................................16
Outputs................................................................................................................................................................16
Operation.......................................................................................................................................18
Hands-free Operation...........................................................................................................................18
Handset Operation................................................................................................................................18
Headset Operation................................................................................................................................19
Paging.....................................................................................................................................................19
Alarms and Music.................................................................................................................................19
Status Indication...................................................................................................................................20
Call Status ...........................................................................................................................................................20

Table of Contents Pub.: 42004-383D
MODEL DHS/DHF SERIES DIGITAL INTERCOM STATIONS
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
ii
Controls..................................................................................................................................................20
Keypad................................................................................................................................................................20
Single Button Dialing .........................................................................................................................................20
Talk/Listen Control.............................................................................................................................................20
Call Cancel..........................................................................................................................................................20
Master Volume ...................................................................................................................................................20
Maintenance..................................................................................................................................21
General Information.............................................................................................................................21
Troubleshooting....................................................................................................................................21
Service ................................................................................................................................................................22
Replacement Parts................................................................................................................................22
Specifications ................................................................................................................................23

Pub. 42004-383D
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 DHS/DHF Series
Digital Intercom Stations
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
The GAI-Tronics DHS/DHF Series Digital Intercom
Stations are designed for use in hazardous and non-
hazardous area communications, both indoors and
outdoors, and in high noise areas.
The DHS/DHF Series Intercom Stations are ideal for
both large and small intercom systems. Communication
and security systems can be networked to include up to
120 intercom servers with the capability to support a
corresponding maximum of 5,760 stations. The
systems can be upgraded to include alarms, radio
interface, telephone interface, music, etc. All
communication to the stations is via a two-wire digital
communication line.
These intercom stations provide all-call, group call,
hands-free, handset and headset communication,
input/output controls, and a variety of other functions.
These stations also contain integrated functions such as
door and gate control, and video integration, and control
desk functions, etc.
System Requirements and Limitations
As a minimum, the DHS/DHF Series Stations require a central cabinet to supply power for operation with
its basic functions. A local 24 V ac or dc power source is required for full functionality (external speaker,
audio line driver and headset operation). Remote amplifiers can be installed with these stations to
broadcast additional audio.
Figure 1. Digital Intercom Station

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Features and Functions
•Central power (limited functionality) or
local power operation (full functionality)
•Direct dial, auto-dial, group call, and all-call
capability
•Two-wire digital communication •Suitable for high noise areas
•24 V ac or dc power •Optional footswitch
•Footswitch input •Optional headset
•12-watt Class-D speaker amplifier •Optional noise-canceling gooseneck microphone
•0 dBm, 600-ohm audio line driver •Protection against feedback
•Volume control •Simplex, switched duplex, and full-duplex capable
•16-button keypad •Call transfer
•Optional Talk/Listen control •Conference calling
•Configurable buttons •Two configurable outputs
•Call status indicator •Suitable for Div. 2 Hazardous Areas
•Noise-canceling handsets •UL Listed
•Hands-free operation •CE Mark
•Two configurable inputs

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Available Models
Wall-Mount Handset Intercoms (Indoor/Outdoor)
The Model DHS-101 Wall-mount Handset Intercom has a built-in speaker amplifier and external audio
output with an optional headset jack.
Wall-Mount Hands-free Intercoms (Indoor/Outdoor)
The wall-mount hands-free intercoms include a built-in speaker amplifier and external audio output.
They are available with an optional gooseneck mic or a headset jack.
Models DHF-101 (NEC Div. 2) Single Button Wall-mount Hands-free Intercom includes a single
programmable push button for call-in only.
Models DHF-102 (NEC Div. 2) Wall-mount Hands-free Intercom with 16-Button Keypad includes
two programmable push buttons.
Flush-Mount Hands-free Intercoms
The flush-mount hands-free models include a
built-in speaker amplifier and external audio
output, and are available with an optional
gooseneck microphone.
Model DHF-103 Single Button Flush-Mount
Hands-free Intercom includes a single
programmable push button for call-in only.
Model DHF-104 Flush-Mount Hands-free
Intercom with 16-Button Keypad includes two
programmable push buttons.
Figure 2. Model DHS-101
Figure 3. Models DHF-101 and DHF-102
Figure 4. Models DHF-103 and DHF-104

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Description of Major Components
The Digital Intercom Stations are made up of a front panel assembly and a rear enclosure.
The following assemblies are mounted on the interior side of the front panel:
•69539-00X Audio/Interface PCB Assembly.
•69547-00X Intercom PCB Assembly
Refer to Figure 5 below. The front panel contains the user interface components (microphone, speaker,
status LED, keypad, and handset) in addition to the 69539-00x Audio/Interface PCBA that provides all
terminations except earth ground. This PCBA also contains controls for volume, gain, and switch
configuration.
The 69547-00x Intercom PCBA connects to the Audio Interface PCBA from below to transmit/receive
audio, data, and control information to and from the central control cabinet. The rear enclosure protects
the electronics from the harsh environment, and also contains the termination for earth ground.
Figure 5. Front Panel Assembly with Intercom and Audio Interface PCBAs

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Installation
General Information
WARNING This equipment is suitable for use in Class I, Division 2, Groups A, B, C and
D, Class II Division 2, Groups F, and G, Class III OR non-hazardous locations only. Combinations
of equipment in your system are subject to investigation by the local Authority Having Jurisdiction
at the time of installation.
WARNING EXPLOSION HAZARD – Do not disconnect equipment unless power has
been removed or the area is known to be non-hazardous.
WARNING EXPLOSION HAZARD - Substitution of components may impair suitability
for Class I, Division 2.
Averttissement – Risque d’explosion - la substitition de composants peut rendre ce matériel
inacceptable pour les em-placements de Classe 1, Division 2.
Averttissement – Risque d’explosion – avant de déconnector l’equipment, couper le courant ou
s’assurer que l’emplacement est désigné non dandereux.
Install equipment without modification and according to all applicable local and national electrical codes.
USA and Canada Consult the National Electrical Code (NFPA 70), Canadian Standards Association
(CSA 22.1), and local codes for specific requirements regarding your installation. Class 2 circuit wiring
must be performed in accordance with NEC 725.55.
Station Placement
This station contains a high gain amplifier, which enables operation in high noise environments. To
prevent feedback problems in the system, the ambient noise levels, volume settings, and station placement
must be taken into consideration. Unpleasant feedback problems can be reduced by taking the following
measures:
•Pointing the speaker away from nearby Intercom Stations
•Placing the speakers in separate rooms from Intercom Stations
•Reducing volume levels

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Mounting
Models DHS-101, DHF-101, and DHF-102
The mounting and wiring instructions for the model
listed above are as follows:
1. Remove the four tamper-resistant screws from the
front of the intercom station, and separate the
front panel from the rear enclosure. Place the
front panel and screws in a safe location.
2. Secure the rear enclosure to the mounting surface
using the four 0.28-inch (7.11-mm) mounting
holes provided along with four ¼-inch (M6)
diameter bolts of the appropriate length for the
mounting surface.
3. Install the field wiring according to the
instructions provided on page 9.
4. Using the appropriate section of this manual,
make the necessary set-up changes:
•Adjust the audio levels as described in the
“Audio Level Adjustments” section beginning
on page 12.
•Make any necessary hardware configuration
changes as described in the “Switch
Configuration” section on page 15.
•Refer to page 16 for the initial programming
options.
5. Complete the installation by reattaching the front
panel assembly to the rear enclosure using the
four tamper-resistant screws. Use a torque setting
of 30 in-lbs. or 35 cm-kg.
6. Verify that the unit is operating as described in the
“Operation” section beginning on page 18.
NOTE:When using the GAI-Tronics Model 231 Pole
Mounting Kit, follow the mounting instructions
provided in the kit.
Figure 6. Model DHF-102
Figure 7. Model DHS-101

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Models DHF-103 and DHF-104
1. For flush-mount installations, mount the included back box in the desired location using appropriate
hardware. Refer to Figure 10 on page 8 for cutout dimensions.
2. Install the wiring and cable fitting through either the top or bottom cutout. Bottom entry is
recommended.
Figure 8. Model DHF-103
Figure 9. Model DHF-104
3. When the cable has been pulled into the enclosure, complete the field wiring according to the Field
Wire Installation instructions provided on page 9.
4. Using the appropriate section of this manual, make the necessary set-up changes:
•Adjust the audio levels as described in the “Audio Level Adjustments” section beginning on page
12.
•Make any necessary hardware configuration changes as described in the “Switch Configuration”
section on page 15.
•Refer to page 16 for the initial programming options.
5. Complete the installation by attaching the front panel assembly to the rear enclosure using the six
tamper-resistant screws.
6. Verify that the unit is operating as described in the “Operation” section beginning on page 18.
For mounting Models DHF-103 and DHF-104 in GAI-Tronics Model 236 Surface-Mount Enclosure and
Model 234/234WM Stanchions, please refer to the installation manual included with the enclosure or
stanchion. The installation manuals are also available at www.gai-tronics.com.

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Figure 10. Model DHF-103 and DHF-104 Mounting Details
Conduit Installation
Metallic Conduit Installation Details
To prevent moisture from entering the enclosure, we strongly recommend the following:
•Conduit should enter the enclosure from the bottom.
•Silicone sealant or equivalent should be applied around and inside all conduit entries.