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HP 11757B
Figure 1-1. Static M-Curve Measurement Test Setup
Radio Setup
4. Connect the Fader, BERT and Digital Radio as
shown in gure 1-1.
5. Press
. Use the
4 MEAS TYPE 5
shows
, then press
STATIC
1. Press
4 RADIO SETUP 5
2. The rst item displayed reads
to see what the bit rate is set to. The
4 ENTER 5
preset value is 44.7 MHz (DS3). If you want to set
another bit rate use the arrow or data keys and press
.
4 ENTER 5
3. The display then reads
to nd the present setting. Use the
4 ENTER 5
to toggle to the termination appropriate for your
BERT, then press
4. The display then reads
to see what the variable error threshold is
4 ENTER 5
set to. If you want to set a di erent threshold use
the arrow or data keys. Choose a threshold setting
(combined with the ERROR TERM setting) that
is appropriate for your BERT, then press
Digital Radio Testing
key until the display
485
.
4 ENTER 5
.
0 BIT RATE
1 ERROR TERM
.
4 ENTER 5
1.1 ERROR THR
. Press
. Press
key
485
. Press
.
4 ENTER 5
1-5
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