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Pub.: 42004-383D 

M

ODEL 

DHS/DHF

 

S

ERIES 

D

IGITAL 

I

NTERCOM 

S

TATIONS

 

Page 12 of 24 

f:\standard ioms - current release\42004 instr. manuals\42004-383d.doc 
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Audio Level Adjustments 

N

OTE

:

 The following adjustments should only be performed after the Intercom Level Setting RM has 

been set (factory setting) and the Master Volume Adjustment (keypad control) has been set to mid-range. 
Refer to Figure 12 for locations. 

 

Figure 12.  Setting Locations 

Summary of Contents for DHF-101

Page 1: ...ions 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 Installati...

Page 2: ...n PA 19540 USA 610 777 1374 800 492 1212 Fax 610 796 5954 VISIT WWW GAI TRONICS COM FOR PRODUCT LITERATURE AND MANUALS ii Controls 20 Keypad 20 Single Button Dialing 20 Talk Listen Control 20 Call Can...

Page 3: ...ous 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 ca...

Page 4: ...oise 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 Pro...

Page 5: ...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 Butto...

Page 6: ...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 gr...

Page 7: ...pour les em placements de Classe 1 Division 2 Averttissement Risque d explosion avant de d connector l equipment couper le courant ou s assurer que l emplacement est d sign non dandereux Install equi...

Page 8: ...ace 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...

Page 9: ...e 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...

Page 10: ...oc 11 10 Figure 10 Model DHF 103 and DHF 104 Mounting Details Conduit Installation MetallicConduitInstallationDetails To prevent moisture from entering the enclosure we strongly recommend the followin...

Page 11: ...imit the functionality of this station and limit the distance from the central cabinet The following functions will not be operational when central power is used External speaker amplifier Audio line...

Page 12: ...Pub 42004 383D MODEL DHS DHF SERIES DIGITAL INTERCOM STATIONS Page 10 of 24 f standard ioms current release 42004 instr manuals 42004 383d doc 11 10 Figure 11 Typical Station Installation...

Page 13: ...eet 2000 m 9843 feet 3000 m with local 24 V power 9843 feet 3000 m Table 2 Recommended Cable Sizes Cable Use Size System Two conductor twisted pair No 22 AWG 0 325 mm2 is typical Power Three conductor...

Page 14: ...instr manuals 42004 383d doc 11 10 AudioLevelAdjustments NOTE The following adjustments should only be performed after the Intercom Level Setting RM has been set factory setting and the Master Volume...

Page 15: ...he volume rotate R79 counterclockwise AGC Automatic Gain Control This station is equipped with an automatic gain control circuit in order to minimize level changes on the audio line and the external s...

Page 16: ...the speaker amplifier The 24 dB setting provides the maximum gain from the amplifier and the 0 dB setting enables the minimum gain Configuration jumpers P36 GAIN0 and P37 GAIN1 have been supplied to s...

Page 17: ...nstall the jumpers on C_GND and IN1 NOTE The function of input IN1 must be programmed in the central cabinet Refer to the Inputs section of the central cabinet instruction manual for instructions on h...

Page 18: ...terminal block P45 pins 7 8 footswitch The footswitch can be programmed to perform a variety of functions such as talk listen control T button function direct dialing etc The footswitch input shares t...

Page 19: ...Pub 42004 383D MODEL DHS DHF SERIES DIGITAL INTERCOM STATIONS Page 17 of 24 f standard ioms current release 42004 instr manuals 42004 383d doc 11 10 Figure 13 Typical system interconnection diagram...

Page 20: ...ration 1 Using the 16 button keypad dial the extension of the desired station or press a call button located on the front panel The front panel LED illuminates to indicate a call is in progress 2 Spea...

Page 21: ...the headset is connected the audio will be broadcast over the headset receiver but will not broadcast over the station s speaker the external speaker or the Remote Amplifiers Paging This station is c...

Page 22: ...n switching This button can be programmed to press and hold or touch and go When using press and hold control press and hold the T button when speaking and release to listen When using touch and go co...

Page 23: ...t receiver or headset receiver 1 Decrease the volume settings via potentiometer R75 2 Decrease the Master Volume setting via the front panel keypad and press Enter 3 Decrease the Intercom Level Settin...

Page 24: ...he system cable is installed properly No power indication Verify power is applied to the unit at P46 Check fuses F5 F6 Replace fuses with identical rating type Fault indication An amplifier fault is a...

Page 25: ...600 ohms nominal Frequency response 200 7 000 Hz 0 3 dB ref 1 kHz Distortion 2 maximum THD 1 kHz 0 775 Vrms Hum and noise 55 dB 20 Hz 20 kHz Indicators External Call Status Internal Power Fault Contr...

Page 26: ...DHS 101 9 2 lbs Models DHF 103 and DHF 104 Construction Panel 14 gauge brushed stainless steel Back box 16 gauge cold rolled steel with black polyurethane finish Dimensions Panel 12 0 H 10 0 W inches...

Page 27: ...of the Contractor s personnel from the work site Re performance of services shall be Buyer s sole and exclusive remedy and in no event shall GAI Tronics warranty obligations with respect to services e...

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