Patton electronic 1045RC User Manual

Page 11

If the remote BER test indicates that errors

are

present, and

the local analog loopback/BER tests showed that both Model
1045RCs were functioning properly, this suggests a problem
with the twisted pair communication line connecting the two
modems. A common problem is improper crossing of the
pairs. Also, verify that the modular connections are pinned
properly, and the twisted pair line has continuity. If you still
have errors, call Technical Support at (301) 975-1007.

5.2.3 USING THE V.52 BER TEST INDEPENDENTLY

The Model 1045RC'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 1045RC. To
use the V.52 BER test by itself, both operators should simultaneously
follow these steps:

Locate the lower of the two toggle switches on the front panel
of the Model 1045RC 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 1045RCs must be turned on.

If the test indicates no errors are present, move the V.52
toggle switch to the left, thus activating the “511/E” test with
errors present. If the test is working properly, the receiving
modem’s red “Error” LED will glow. A successful “511/E” test
will confirm that the link is in place, and that the Model
1045RC’s built-in “511” generator and detector are working
properly.

APPENDIX A

1045RC SPECIFICATIONS

Transmission Format:

Synchronous or asynchronous,
2-wire or 4-wire

Internal Interface:

Connection to Model 1000R16 rack
chassis via 50 pin male card edge

External Interface:

DB-25 female (RS-232), M/34 female (V.35)
RJ-11 or RJ-45 (line)

Transmission Line:

2-wire or 4-wire unshielded twisted pair
(UTP), 19-24 AWG

Data Rates:

32, 56, 64 Kbps

Clocking:

Internal, external or receive recover

RTS/CTS Delay:

No delay, 7mS, 53mS

Controls:

Carrier constantly “ON” or “controlled by
RTS”

Indicators:

Bi-color LED indicators for TD, RD, RTS &
DCD; single LED indicators for Power, Test
and Error

Diagnostics:

V.52 compliant bit error rate pattern; V.54
compliant— Local Analog Loopback and
Remote Digital Loopback, activated by front
panel switch or via terminal interface

Transformer Isolation:

1500 V RMS

Surge Protection:

Silicon Avalanche Diodes

Temperature:

0-50°C / 32-122°F

Humidity:

4-95%, noncondensing

Dimensions:

0.95”w x 3.1”h x 5.4”l