Patton electronic 2020N user manual Connecting AN RS-232 DTE to a V.35 DCE, Connecting the Model

4.0 INSTALLATION

After you have configured the DCE/DTE strap, all you need to do is plug the Model 2020 or 2020N into the proper device ports. Figures 4 and 5 showhow to intstall the Model 2020/2020N.

*NOTE: The diagrams below show the Model 2020 in the installed application. If you are using a Model 2020N, connect the RS-232 interface directly to the RS-232 equipment and connect the V.35 interface to the V.35 interface using a cable no longer than 164 feet (50m).

4.1 CONNECTING AN RS-232 DTE TO A V.35 DCE*

Figure 4 (below) illustrates proper connection of an RS-232 DTE to a V.35 DCE using the Model 2020. The RS-232 interface of the Model 2020/2020N must be configured as DCE.

Sync. Terminal

(DTE)

V.35 Modem

(DCE)

Figure 4. A Common RS-232 DTE to V.35 DCE Installation

4.2 CONNECTING A V.35 DTE TO AN RS-232 DCE*

Figure 5 (below) illustrates proper connection of a V.35 DTE to an RS-232 DCE using the Model 2020. The RS-232 interface of the Model 2020/2020N must be configured as DTE.

V.35 Mini Computer

(DTE)

Sync. Modem

(DCE)

Figure 5. A common V.35 DTE to RS-232 DCE installation

4.3 CONNECTING THE MODEL 2020-25

The Model 2020-25 is connected the same way as the standard Model 2020, with the exception that the V.35 interface has a DB-25 connector instead of an M/34 connector. The DB-25 carries the same signals as the M/34, but is pinned according to the RS-530 Standard. Please refer to Appendix B for specific pin out information.

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APPENDIX A.

MODEL 2020 AND 2020N SPECIFICATIONS

Interfaces:	EIA RS-232/ITU/CCITT V.24 to ITU/CCITT
	V.35/EIA RS-530
Data Rates:	0 - 384 Kbps
Transmission Mode:	Synchronous, full or half duplex
Protocol:	Transparent to protocol
Clocking:	Set by connected devices
Connectors:	All Versions: DB-25 male or female on
	RS-232 side;
	Model 2020: M/34 male or female on V.35
	side at the end of 6 ft. cable.
	Model 2020-25:DB-25 male or female on
	V.35 side at the end of 6 ft. cable.
	Model 2020N: RS-232 Male with M/34
	male or female on V.35 side OR, RS-232
	female with M/34 male.
Power Supply:	None required. Uses power from NIC data
	and control signals
Temperature Range:	0-60 degrees C (32-140 degrees F)
Altitude:	0-15,000 feet (0-5,000 meters)
Humidity:	5 to 95% noncondensing
Dimensions:	Model 2020: 2.66"L x 2.10"H x 0.73"W
	(6.76cmL x 5.33cmH x 1.85cmW)
	Model 2020N: 2.40”L x 1.73”H x 0.89”W
	(6.10cmL x 4.39cmH x 2.26cmW)
Weight:	Model 2020: 14 oz, including cable and
	connectors
	Model 2020N: 2.2 oz

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