Patton electronic 1090 5.3.4 V.52 BER TEST GENERATOR, Clocking, Distance, Data Rates, Diagnostics

5.3.4 V.52 BER TEST GENERATOR

The Model 1090 has a built-in test pattern generator and detector. It can be invoked at both ends of a link simultaneously or it can be used with the Local Analog, Remote Digital or Local Digital Loopbacks. The following example requires two operators: one to initiate and monitor the test at the local Model 1090, and one at the remote Model 1090. To use the V.52 BER test by itself, both operators should simultaneously follow these steps.

A.Locate the 511/511E toggle switch on the front panel of the Model 1090 and move it DOWN. This activates the V.52 BER test mode and transmits a 511 pseudorandom test pattern to the other unit. If any errors are received, the receiving Model 1090’s red ER LED will blink sporadically.

NOTE: For this test to function, the 511 switch on both Model 1090’s must be on.

B.If the test indicates no errors are present, move the V.52 toggle switch UP, activating the 511/E test. The 511/E test transmits the 511 pseudorandom test pattern and injects intentional errors about once per second. If the test is working properly, the receiving Model 1090’s red ER LED will blink regularly.

A successful 511/E test will confirm that the link is in place, and that the Model 1090 built-in 511 generator and detector are working properly.

C.This test can be done by one operator by first activating the local analog loop or remote digital loop.

APPENDIX A

1090 SPECIFICATIONS

Transmission Synchronous

Format

Transmission Line: Unconditioned twisted pair 19 - 26 AWG

Clocking:	Internal, external or receive loopback
Distance:	Up to 11 miles (19 AWG @ 56 kbps)
Data Rates:	48, 56, 64, 72, 80, 112, 128, 144 and 160
	kbps (switch selectable)
Carrier Control:	Constantly on or Controlled by RTS
RTS/CTS Delay:	No delay, short delay (4 - 9 mSec), long
	delay (33 - 71 mSec).
Diagnostics:	V.52 compliant bit error rate pattern
	(511/511E pattern) generator and detector
	with error injection mode; V.54
	compliant—local analog loopback and
	remote digital loopback, activated by front
	panel switch or via serial interface
LED Status	TD, RD, RTS, CD, DTR, ER and TM
Indicators:	(test mode)
Isolation:	Minimum 3000V RMS via transformers
Surge Protection:	600W power dissipation at 1 ms
DCE/DTE Interface:	Field-replaceable Quick ConnectTM
	modules.
Twisted Pair	8-position modular jack (RJ-45)
Interface:
Power:	115/230 VAC (switch selectable), 50/60 Hz;
	85 - 256 VAC, 50/60 Hz (universal input
	option); 48 VDC (option). 5 watts.
Temperature
Range:	0-50°C (32-122°F)
Altitude:	0-15,000 feet
Humidity:	5 to 95% non-condensing
Dimensions:	7.3” x 6.6” x 1.62” (185mm x 168mm x
	41mm)
Weight:	2.02 lbs. 1.0 Kg

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