5.3.3 Using the V.52 (BER) Test Pattern Generator
To use the V.52 BER tests in conjunction with the Remote Digital
Loopback tests (or with Local Line Loopback tests), follow these
instructions:
1.
Locate the “511/511E” toggle switch on the front panel of the
1089 and move it UP. This activates the V.52 BER test mode
and transmits a “511” test pattern into the loop. If any errors
are present, the local modem’s red “ER” LED will blink
sporadically.
2. If the above test indicates no errors are present, move the
V.52 toggle switch DOWN, activating the “511/E” test with
errors present. If the test is working properly, the local
modem's red “ER” LED will glow. A successful “511/E” test
will confirm that the link is in place, and that the Model
1095’s built-in “511” generator and detector are working
properly.
25
26
A
AP
PP
PE
EN
ND
DIIX
X A
A
PATTON ELECTRONICS MODEL 1089/C AND 1089/D
SPECIFICATIONS
Clocking Modes:
Internal, External, or Receive Recovered
DTE Rate:
All 64k steps from 64 to 2304 kbps
DTE Interface:
V.35 (Model 1089/C), DCE Orientation;
X.21 (Model 1089/D), DCE or DTE
Orientation depending upon orientation of
pc-board mounted daughter board
DTE Connector:
M/34 Female (Model 1089/C)
D-Sub-15 Female (Model 1089/D)
Diagnostics:
V52 compliant (511/511E) pattern generator
and detector with error injection mode con-
trolled by front panel switch, Local and
Remote Loopback control by either a front
panel switch or from the DTE interface
LED Status:
The following LEDs are displayed on the
front panel:
DSL Link (Green Active) -
DSL Link Active
TD, RD (Yellow/Green) -
Idle Yellow
NS (Red Active) -
No signal DSL Link
ER (Flashing Red) -
CRC error during nor-
mal operation, bit error during pattern gen-
eration test
TM (Active Yellow) -
Test Mode Enabled
Configuration:
Externally accessible dip switches or SNMP
managed through 1095RC
Power:
+5V External desk top power supply, 90-
260VAC, 50-60 Hz (Universal Input), 10W
or -48VDC
Compliance:
FCC Part 15, CE
Transmission Line:
Single Twisted Pair
Line Coding:
2B1Q
Line Rates (DSL line):
144, 272, 400, 528, 784, 1040, 1168kbps
Line Interface:
Transformer coupled, 1500 VAC isolation
mDSL Physical
Connection:
RJ-45, 2 wire, polarity insensitive pins 4
and 5
Environment:
Operating temperature 0-50°C; humidity 5-
95% non-condensing; altitude, 0-15, 000
feet (0-4600 m)
NOTE:
The above V.52 BER tests can be used independently
of the Remote Digital Loopback tests. This requires two opera-
tors: (1) to initiate and monitor the tests at the local Model 1089,
and (2) to do the same at the remote Model 1089. In this case,
the test pattern sent by each Model 1089 will not be looped back,
but will be transmitted down the line to the other Model 1089.
While one operator initiates test, the other monitors for errors.
