Description
Tahoe 235 is a converter between G.703 and V.35 interfaces. It has a G.703 port (2048 kbps, unframed) with an RJ-45 connector and a V.35 port with a 34-pin Winchester connector.
The V.35 port works as DCE, i.e. from the router's side it behaves like a modem. A built-in 128-bit buffer compensates for frequency variations of the G.703 signal.
Clocking
Data transmitted over V.35 can be clocked in three ways:
- by the clock recovered from the G.703 signal (default setting)
- by an independent 2.048 MHz oscillator
- by the clock on the SCT(a)/SCT(b) pins of the V.35 connector, supplied by the DTE device, e.g. a router (so-called secondary timing)
Reach
The G.703 receiver sensitivity is selected according to the line length: short haul (-12 dB, up to 50 m) or long haul (-43 dB, up to 2000 m).
The device is small, 100 x 60 x 30 mm, and draws little power.
Technical data
| Throughput | 2048 kbps, full-duplex | |
|---|---|---|
| G.703 interface | RJ45, balanced, 120 Ohm | |
| V.35 interface | 34-pin Winchester connector, female (DCE), conforming to ISO-2539 | |
| Range | 50 m or 2000 m (distance between converter and E1 line terminating device) | |
| Clocking source | from received G.703 stream, from internal generator or from DTE | |
| Dimensions | 100 mm (width) x 60 mm (depth) x 30 mm (height) | |
| Power supply | 7.5V/400mA external power supply included | |