Anrtisu Cell Master MT8212B, User Manual, Page: 211 / 294

Out-Of-Service Testing
Out-of-service measurements are performed when the E1 circuit is not in service or inac-
tive. Typically these tests are done during initial installation, during circuit acceptance by
the wireless service provider or when the performance of the in service measurements indi-
cates extensive errors. These measurements provide detailed information about the E1 cir-
cuit.
Out-of-service testing is performed using end-to-end testing, which requires a technician
and a unit at each end of the circuit.
The following measurements are used to check the E1 performance during out of service
testing:
q
Vpp
q
Carrier
q
CRC Errors
q
Frame Sync
q
Pattern Sync
q
E-Bits
q
Insert Errors/Alarms
q
Self Loop Code
Required Equipment
q
MT8212B Cell Master with Option 50
q
Bantam Cables, Anritsu Part Number 806-16 (2)
Procedure
Step 1. Press the MODE key, select
E1 Tester
, and press ENTER .
Step 2. Select the
BERT
soft key.
Step 3. Press the
Framing Mode
soft key and choose
Auto
,
PCM30
,
PCM30CRC
,
PCM31
or
PCM31CRC
framing type. Press
Back
to return to the previous menu.
Step 4. Press the
Receive Input
soft key and select
Terminate
. Press
Back
to return to
the previous menu.
Step 5. Press the
Pattern
soft key and select
Auto
, or use the
Up/Down
arrow key to se-
lect the appropriate pattern for the test.
NOTE: The Cell Master will attempt auto-framing in two situations only:
1. When the unit is initially set for auto-detect, and
2. When a new measurement is started and loss of frame or pattern sync is de-
tected. The Cell Master will not attempt to auto detect in mid-measurement.
Step 6. Press the
Line Coding
soft key and select
HDB3
or
AMI
coding. Press
Back
to re-
turn to the previous menu.
10-8
Chapter 10 E1 Measurements