Tektronix NetTek YBT1E1, User Manual

Page: 75 / 122

NetTek YBT1E1 T1 & E1 Circuit Tester User Manual
3- 7
Testing a Circuit
Verify Received Signal and Line Coding
After you connect the NetTek YBT1E1 to a signal, you should verify
that the YBT1E1 is receiving a sufficiently-strong signal and detects
a line coding format. To verify signal strength and line format
coding, do the following:
1.
Select the
Rx Level
button. Verify that the signal level meets the
minimum receiver sensitivity requirements listed in the
Specifications section. See page A--1.
2. Select the Line Code button. Verify that the displayed line code
is correct for the type of signal you are testing.
Automatic Measurement Setup
The NetTek YBT1E1 can automatically detect most of the
parameters necessary to test a circuit. However, the instrument Line
Coding setting must match the line code of the signal you are testing.
To set the instrument to automatically detect received signal
parameters:
1. Tap the Line Code button to see which line code type the
instrument is detecting.
2. Tap the Done button to close the Line Code Detect window.
3. Tap the Edit button (or select Setup > Edit ).
4. Tap the Instrument tab if not already selected
5. Set the following parameters:
a. Line Coding: select the line code determined in step 1.
b. Framing: Same as Rx Signal .
c.
Transmit Clock:
Recovered
.
d.
Generated BER Pattern:
Same as Rx Signal
.