Specifications

2
Numbering Plan
The dialing codes are 1-9 and 0 for all call.
Additional Materials Required
At the time of installation, the installer should
provide the following materials:
 -24VDC power supply (if existing supply is not
adequate)
 66 type connecting block
 25 pair cable with a female amphenol connector
on one end
 Twisted pair cross-connect wire
Dimensions/Weight
 7.10" H x 5.90" W x 2.10" D
 (18.03cm H x 14.99cm W x 5.33cm D)
 2.7 lbs. (1.22 kg)
Electrical Characteristics
TABLE 1
Parameters Working Limits
Input impedance Tip and Ring 600 Ohms
Max cable length to talkback
speaker
800 feet audio
Dial Pulses 8-12pps
60-40 break ratio
+/- 10%
Tone Signals Industry Standard
Frequency
Bandwidth 3%
Twist 6dB
Detect 40ms
Interdigital Time 40ms
Environmental
Temperature 0 to +50°C
Humidity 0 to 85%
Non-precipitating
Power Requirements
The Valcom V-1109RTHF requires -24VDC talk
battery and -24VDC signal battery. The current
consumption and voltage range is shown in Table 2
below.
TABLE 2
Talk Battery -21.5 to -26VDC 60mA
Signal Battery -21.5 to -25VDC 250mA
Lamp Battery 9 to 11VAC 45mA/Lamp
Remember when working with telephone
equipment that BATTERY is NEGATIVE and
GROUND is POSITIVE.
DESIGN
Telephone System Requirements
The V-1109RTHF is designed to work with the
following:
PABX - Loop start trunk position.
ELECTRONIC KEY SYSTEM - C.O. line button
equipped with trunk card.
1A2 KEY SYSTEM - C.O. line button on key
telephones. NOTE: A 400 type line card is not used
for this arrangement.
The V-1109RTHF has background music inputs and
is capable of switching the music. Refer to the
Section titled "Music Connections" for music set up
and connections.
T
elephone
System
Valcom
V-1109RTHF
1
9
Power
Supply
Talkback Speakers
Typical Configuration
Figure 1
Equipment
A complete 9 Zone Handsfree Talkback Paging
System using the V-1109RTHF will be made up of
the following:
 PABX loop start trunk position, E-Key C.O. line
button or 1A2 line key
 V-1109RTHF 9 Zone Talkback Control Unit
 Valcom 45 Ohm Talkback speakers
 -24VDC power supply (talk and signal battery)
INSTALLATION
This section covers the installation procedures for the
Valcom V-1109RTHF only. Consult other
equipment instructions if additional equipment is
used.
Precautions
All precautions have been taken at the factory to
insure that the equipment functions properly. To
insure proper operation and to prevent equipment
damage, please observe the following:
 Unplug the power supply before making any
connections to the control unit.