Patton electronic 1050patton - Manual (Page 7)

5.2.2 REMOTE ANALOG LOOP
The second test mode is Remote Analog Loop. To enter this
mode, set one of the Model 1050s (local) in test mode by depressing
the "Loopback Test" switch. Any characters sent from the remote 1050
will be returned to it (see Figure 5). If no characters are echoed back,
check the wiring between the two Model 1050s. Be sure to wire the
units according to the instructions in Section 4.0 Installation.
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APPENDIX A
PATTON MODEL 1050 SPECIFICATIONS
Transmission Format: Asynchronous
Transmission Line: 19 to 26 AWG twisted pair
Range: 7 miles on 24 AWG twisted pair @ 1200 bps
Serial Interface: EIA RS-232 (CCITT V.24), DB-25 female
Twisted Pair Interface: Terminal blocks, RJ-11 jack
Data Rates: 0 - 38,400 bps
Applications: Point-to-point, Multipoint
Indicators: Tri-state for transmit data, receive data, and
test
Diagnostics: Local Analog Loopback (LAL), Remote
Analog Loopback (RAL)
Optical Isolation: 2500V RMS (minimum)
Power Supply: Wall mount, 9-12VAC, 200ma
Temperature Range: 0-60°C (32-140°F)
Altitude: 0-15,000 feet
Humidity: 5 to 95% noncondensing
Dimensions: 1.58”H x 4.16”W x 3.75”D
Weight: 13.2 oz. (without transformer)
RD
TD
TD
RD
Local 1060
In Normal Mode
Remote 1060
In Normal Mode
TX+
TX-
RX-
RX+
RX+
RX-
TX-
TX+
RD
TD
TD
RD
Local 1060
In Loopback Mode
Remote 1060
In Normal Mode
RX+
RX-
TX-
TX+
TX+
TX-
RX-
RX+
Figure 5. Loopback Test Modes