Radio Data Communications  
     
  VHF Technology  
  VHF Transmitters  
   
                 
    Features    
                 
   

•  Field programmable features for on-site convenience.
•  Synthesized design.
•  Engineer test button - for easy on-site testing.
•  Low battery reporting.
•  Multiple lock-on protection features.
•  Internal pull-up resistors for negative trip eliminates the need for external resistors.
•  All inputs may be programmed individually for positive or negative trip making the transmitter compatible with any control panel.

 

•  A power-up signal is sent which can indicate that the transmitter has been tampered with by an insider.
•  Intelligent mains fail/restore signalling varies signal delays reducing unnecessary network congestion during power failures. The installer, however, is able to test mains fail/restore signals without delay for five minutes after applying power to the unit. The mains fail delay can now be set for between 15 - 250 minutes.

 

•  Signal buffering is used when inputs are triggered simultaneously. Signals are stored in the transmitter and sent in event order.
•  Manufactured using the latest surface mounting techniques which minimises the chances of human error.
•  The transmitter draws less current placing less strain on the system battery.
•  LED indicates seven different transmitter conditions for fast and simple diagnostics.

   
                 
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    Transmitter Specifications - TX 790C Range    
                 
   

Frequency Range
Channel Spacing
Operating Voltage
Modulation Method
Frequency tolerance

Narrow Bandwidth
Spurious Emissions:

a) Harmonic
b) Non harmonic


Deviation:
Nominal
Temperature range
Class of Emission
Antenna Impedance


Current Consumption:
Standby
Transmit


Overall Dimensions
Mounting
Antenna Socket
Transmission Duration


Telemetry Inputs:
Output voltage range






Inputs Connections

 

132 - 174 MHz
12.5 KHz
10.5 to 13.8 Volts DC
FM
5 ppm



> 60 dB
> 70 dB

Adjustable between 1.5 and 2.5 KHz
Approximately 2 KHz
-10 to + 60 C
F3E
50 Ohms


30 mA
1.8 Amps at 12V nominal

112mm x 81mm x 24mm
2 x 7mm holes
Internal tamper proof antenna connection
90 - 360 mS


Positive Trip - 10.8~14V
Negative Trip - Open Collector 0~0.5V
The transmitter inputs accommodate only the
above alarm panel output voltage ranges.
Alarm panels which do not meet this requirement
will require a level converter interface.

Screw terminals

       
                 
   
                 
    Models   TX 750C
Reports a 4 digit code number, customer ID and 9
telemetry conditions:
•  open/close
•  panic!alarm
•  low battery
•  self-test
•  engineer test
•  telemetry 5
•  dedicated mains fail/restore
  TX 790CID
Reports a 4 digit code number, customer ID and 2hardwired
telemetry conditions:
•  panic
•  alarm
•  TIP
•  RING
Contact ID interface support:
Up to 4 partitions are supported / reported
Up to 31 zones reported
(zone 32 reserved for universal or unknown zone)
Up to 15 users / key holders reported
(user 16 reserved for universal or unknown user)
   
                 
        TX 790C
Reports a 4 digit code number, customer ID and 12
telemetry conditions:
•  open/close
•  panic
•  alarm
•  low battery
•  self-test
•  engineer test
•  telemetry 1
•  telemetry 2
•  telemetry 3
•  telemetry 4
•  telemetry 5
•  dedicated mains fail/restore
  TX 790 Serial
Reports a 4 digit code number and customer ID
Serial interface support:
Up to 4 partitions are supported / reported
Up to 31 zones reported
(zone 32 reserved for universal or unknown zone)
Up to 15 users / key holders reported
(user 16 reserved for universal or unknown user)

Network Models
Models are available for managed networks without
open/close inputs
   
                 
   
                 
    Operation    
                 
   

•  Low battery and restore reporting.
•  Self test programmable between 1-250 hours.
•  Internal pull-up resistors for negative trip eliminates the need for external resistors.
•  A power-up signal is sent which can indicate that the transmitter has been tampered with by an insider.
•  A programmable mains fail/restore delay can be set from 15 - 250 minutes plus a random delay to prevent signal clashing. The factory default is 15 minutes plus the random delay. The installer, however, is able to test mains fail/restore signals without delay for thirty minutes after the installation.
•  Engineer test button.
•  Signal buffering - when inputs are triggered simultaneously they are stored in the transmitter and sent in priority order.
•  LED indicates 7 different transmitter conditions.

   
                 
RDC RDC RDC
RDC RDC RDC RDC RDC RDC
   
                 
    Transmitter models    
                 
  TX750C        
                 
  TX790C        
                 
  TX790CID

A simple two wire installation allows extra data to be sent in the Contact ID format. Open/lock-up by user number or alarm by partition and zone can be sent in a single signal.
•  Up to 4 partitions supported
•  Up to 31 zones supported
(zone 32 reserved for universal zone)
•  Up to 15 users/key holders supported
(user 16 reserved for universal user)

   
                 
  TX7-serial

A serial link between the transmitter and the panel provides extended radio telemetry data reporting. It provides a neater solution with fewer unsightly wires and quicker, easier installation.
•  4 Partitions - fully supported
•  2 Partitions - basic reporting
•  10 Partitions - general alarm & tamper reporting
•  Up to 15 users/key holders supported
(user 16 reserved for universal user)
•  Up to 31 zones supported
(zone 32 reserved for universal zone)
•  64 Standard RDC telemetries
•  39 Panel-specific telemetries

   
                 
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Radio Data Communications (PTY) Ltd
Tel: +27 11 452 1471/2
Fax: +27 11 452 1503

Email: gert.v@radiodata.co.za
157 Van Riebeeck Ave, Edenvale, 1609      S26°07.791  E028°08.814      what3words: havens.outwit.bets
 
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