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TRCS: 9501
Voice/Data Modem
The TRC:9501 System Control Modem Multiplexes voice data, digital IO and
signalling onto a single audio channel. Designed fo harsh environments where
noisy lines and bad comms are the norm, the 9501 continues to operate well
below the minimum line levels for normal modems.
At a remote installation you have an emergency phone, a lot of complex
equipment and regular lightning storms - oh, and you've only got one phone
line. The 9501 is fully opto isolated and comes standard with 8 digital inputs
and outputs for control and monitoring. If you need more, a single unit can be
expanded up to 96 inputs and outputs. In fact, you don't even need the phone
line The 9501 can just as easily link to standard telemetry radio. Plug in the
telephone handset and wave goodbye to the mosquitoes.
Installation
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1 RU 19" rack mount box
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12V, 24V or 48V DC supply options
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Audio facilities
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Full duplex voice communications
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2 wire or 4 wire audio interface
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Direct handset connection(AI-Phone)
Telemetry
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Point to point or Multidrop modes
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External status outputs for monitoring modem condition
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Transmits and receives RS232 data
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Wide range digital inputs
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Opto-isolated didgital inputs and outputs
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8 digital inputs and 8 digital outputs as standard
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Internal expansion to 16 or 24 inputs and outputs
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Further expansion up to 96 inputs and outputs available in larger cases
Signalling
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Fast digital input and output through independent channel
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Call signalling on phone lines or PTT signalling to telemetry radio
Communications
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2 wire or 4 wire interface
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Factory selectable telemetry center frequencies
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PTT signal available for radio communications with programmable timing
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Transformer isolated line interface with secondary solid state transient
protection
Specifications
| Ambient Operating Temperature |
Range: |
0°C to +60°C |
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Relative Humidity: |
20% to 90%, non condensing |
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| Size |
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1U x 19" x 270 mm |
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| Power Supply |
Modem Input Power: |
20 to 30 V DC (24V nominal) |
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24V @ 190mA (typical) |
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20V DC @ 250 mA (maximum) |
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12VDC, 48VDC also available |
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Modem DC Output: |
(optional) unswitched, fused, |
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1A maximum at input voltage |
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Internal Fuse: |
2A Slow blow |
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External Fuse: |
2A Quick blow |
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| Telemetry |
Frequency: |
2820Hz Centre Frequency standard, options available |
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Transmit Level: |
- 13 dBm nominal (into 600) |
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Receive Sensitivity: |
- 43 dBm |
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Carrier Detect Level: |
- 40 dBm |
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Baud Rate: |
300 bps |
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| Signalling Tone |
Frequency: |
2820 Hz standard, options available |
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Send level: |
- 19 dBm nominal (600) |
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Detect level: |
- 42 dBm (600) |
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| Digital Outputs |
Protection: |
opto-isolated open collector, over voltage protected output. |
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Output Current (max.): |
250 mA |
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Output Voltage (max.): |
70V |
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Saturation Voltage: |
< 3.0V @ 250 mA (2.7V typ) |
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Output Isolation: |
1500 Vdc between output and chassis |
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| Digital Inputs |
Protection: |
opto-isolated current protected input |
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Input Voltage: |
Wide input range: 12V, 24V and 48V |
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Input Voltage (max.): |
±70V |
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Input Current: |
< 2.5 mA @ +12V (2.1 mA typ) |
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< 3 mA @ +48V (2.7 mA typ) |
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150 µA @ -60V (typ) |
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Switch On Voltage: |
+5V (typ) |
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| Status Outputs |
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processor fail |
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carrier detect |
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scan fail |
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