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25111 Arctic Ocean Drive Lake Forest, CA 92630
tel. 949.455.4000 fax. 949.455.4010 www.telenetics.com
Specifications*
FUNCTIONAL DESCRIPTION
General |
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Data Rate | From 0 to 1800 bps (baud) depending |
| on transmission facility |
Modulation | |
| (FSK). |
Line Impedance | 600 ohms ± 10 %, transformer coupled |
| and transient protected |
Operation | The modem operates at full duplex or |
| half duplex over |
| |
| It operates asynchronously. |
Receive and | Space: | 2200 | Hz | |||
Transmit |
| Mark: | 1200 | Hz | ||
Frequencies | ||||||
Soft carrier: | 900 | Hz | ||||
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Timings |
| All | settings and | timings are | ||
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| controlled by jumpers on the modem | ||||
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| board. |
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Option to turn transmitter OFF after a | ||||||
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| selected time, even if Request To Send | ||||
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| is ON |
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Test Features | The modem employs a rotary switch | |||||
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| that selects these test options: | ||||
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| ¥ | Data Mode |
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| ¥ | Self Test |
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| ¥ | Analog Loop back |
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| ¥ | Digital Loop | back |
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| ¥ | Test Pattern | Transmit |
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Indicators | The | modem has LED indicators for the | ||||
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| following interface circuits: | ||||
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| RTS, CTS, DCD, RD, TD, TM (Test Mode) | ||||
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| and PWR. |
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Receiver |
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Receiver | Center | 1700Hz ± 16 Hz |
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Frequency | Tolerance |
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Receiver Performance The modem receiver will operate with the following performance at 3002/C2 or M1025 lines
1200Bps: | B.E.R. equal to 1 x |
| signal to noise ratio |
1800Bps: | B.E.R. equal to 1 x |
| signal to noise ratio |
Carrier Detect | The received carrier detect threshold can |
Threshold | be configured by the |
With jumper option: | |
DCD off ➞ on | Carrier stronger than Ð30 dBm |
OR |
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DCD off ➞ on | Carrier stronger than Ð45 dBm |
Hysteresis: | Approximately 2 dB |
Receiver Dynamic | 0 dBm to Ð 43 dBm |
Range |
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Transmitter |
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Transmit | FrequencySpace frequency: | ± 0.1 | % | ||
Tolerances | Mark frequency: | ± 0.1 | % | ||
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| Soft Carrier frequency: | ± 0.1 | % | |
Transmit | Levels | The modem transmit level is |
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| |
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| selectable from 0 dBm to Ð 14 dBm in | |||
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| 2 | dB steps by the | ||
|
| 1 | to 8. |
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POWER REQUIREMENTS
Rack & Standalone
AC Power | 20 VAC RMS @ 150 mA, centertapped. | ||
| 10 VAC RMS @ 225 mA. | ||
| 115VAC & | 220/240VAC | |
DC Power | +15 | VDC | referred to gnd |
| VDC referred to gnd. | ||
| +8.5 VDC | referred to gnd. |
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature | to | + | 85 | degrees C | ||
Storage | Temperature | to | + | 85 | degrees C | |
Relative | Humidity | 95%, |
INTERFACE SPECIFICATIONS
Analog Line edge An
connectorthe backend of the modem board. The four signals routed to and from this connector are the analog transmit and receive pairs. Each pair are fully differential signals.
Pin Signal Name | Function | ||
3 | DTR | Receive | Line for four wire systems |
4 | DTX | Transmit/Receive Line for two wire systems | |
5 | DRX | Transmit/Receive Line for two wire systems | |
6 | DRR | Receive | Line for four wire systems |
The maximum data rate for this modem is:
▲0 to 1200 bps (baud) over ITU M.1025 or BELL 3002 Basic services.
▲0 to 1800 bps (baud) over ITU M.1020 or BELL 3002 C2 conditioned lines.
Interface Compatibility
▲The modemÕs line interface is compatible with the Bell Systems/WE 202 specifications and with the ITU V.23 recommendation.
▲The modemÕs data interface is compatible with the RS 232C specifications and with the ITU V.24/28 recommendations.
Document #0071 0700
Telenetics is registered trademark of Telenetics Corporation. All other trademarks are the property of their respective holders. ©2000