Using the V.52 BER Test Independently | Patton electronic 1140ARC

5.3.3 USING THE V.52 BER TEST INDEPENDENTLY

The Model 1140ARC's V.52 BER test can be used independent of the V.54 loopback tests. This requires two operators: one to initiate and monitor the test at both the local and the remote Model 1140ARC. To use the V.52 BER test by itself, both operators should simultaneously follow these steps:

1.Locate the lower of the two toggle switches on the front panel of the Model 1140ARC and move it to the right. This will activate the V.52 BER test mode and transmit a “511” test pattern to the other unit. If any errors are present, the receiving modem’s red “Error” LED will blink sporadically. Note: For this independent test to function, the “511” switch on both Model 1140ARCs must be turned on.

2.If the test indicates no errors are present, move the V.52 toggle switch to the left, thus activating the “511/E” test with periodic errors present. If the test is working properly, the receiving modem’s red “Error” LED will blinkregularly. A successful “511/E” test will confirm that the link is in place, and that the Model 1140ARC’s built-in “511” generator and detector are working properly.

APPENDIX A

PATTON MODEL 1140ARC SPECIFICATIONS

Transmission Line: Dual optical cable

Transmission Mode: Asynchronous, half or full duplex, point-to-point

Interfaces: EIA RS-232, CCITT V.24

Data Rates: 0 - 57.6 Kbps

Distance: 4 miles over continuous fiber

RTS/CTS Delay: Switch-selectable: No delay, 7.0 mS, 53 mS

Receiver Sensitivity: -45 dBm

Coupled Power Output: -20 to -25 dBm

Optic Wavelength: 850 nm

LED Indicators: Power, TD, RD, RTS, CD, Test Mode, Error

Connectors: HD-26 female on RS-232 side; ST or SMA connectors on fiber side

Power Supply: 120/240V (switchable) on rack chassis

Temperature Range: 0-60°C(32-140°F)

Altitude: 0-15,000 feet

Humidity: Up to 95% non-condensing

Weight: 2 oz.

Dimensions: 0.95”W x 3.1”H x 5.4”L