Range of VHF radio transmitters
• 5 or 9 Hardwired inputs
• On-board serial connection
• On-board Contact ID option
• New chassis design
• New slim whip antenna
• Programmable alarm input delay
• Programmable positive or negative trip
• Engineer test button
Features.
Field programmable features for on-site convenience.
Synthesized design.
Signal buffering is used when inputs are triggered simultaneously. Signals are stored in the transmitter and sent in event order.
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.
Engineer test button for easy on-site testing.
Low battery reporting.
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.
Transmitter Specifications.
TX 790C Range.
| Narrow Bandwidth Spurious Emissions: | |
| a) Harmonic | > 60 dB |
| b) Non harmonic | > 70 dB |
| Deviation | Adjustable between 1.5 and 2.5 KHz |
| Nominal | Approximately 2 KHz |
| Temperature range | -10 to + 60 C |
| Class of Emission | F3E |
| Antenna Impedance | 50 Ohms |
| Current Consumption: | |
| Standby | 30 mA |
| Transmit | 1.8 Amps at 12V nominal |
| Overall Dimensions | 112mm x 81mm x 24mm |
| Mounting | 2 x 7mm holes |
| Antenna Socket | Internal tamper proof antenna connection |
| Transmission Duration | 90 – 360 mS |
| Telemetry Inputs: | |
| Output voltage range | 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. |
| Inputs Connections | Screw terminals |
| Frequency Range | 132 – 174 MHz |
| Channel Spacing | 12.5 KHz |
| Operating Voltage | 10.5 to 13.8 Volts DC |
| Modulation Method | FM |
| Frequency tolerance | 5 ppm |
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 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 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 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.
Transmitter models.
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)
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