Anritsu MS9740B - Page 146

Chapter 4 Changing Measurement Conditions
4-28
To change to High dynamic range mode (High D.Range)
The measurement time is longer in the high dynamic range mode but the
dynamic range performance is improved.
1. Press
f1 Dynamic Range
to switch to High.
The High-D.Range is displayed in the measurement settings display
field.
2. To release the high-dynamic range mode and return to the Normal
mode, press
f1 Dynamic Range
.
The High-D.Range display in the measurement settings display field
is erased.
To use External Trigger (Ext Trigger)
When the level of the external trigger at the back-panel Trigger connector
changes from low to high, the data for one sampling points is measured.
1. Press
f2 Ext. Trigger Delay
.
The ExtTrig is displayed in the measurement condition display field.
2. Enter the delay time using the keypad or rotary knob.
The delay time is from the trigger input until measurement is
started.
The delay time can be entered from 0 to 5 s.
The ExtTrig is displayed in the measurement condition display field.
3. Press
Single
or
Repeat
.
When the signal level at the Trigger connector is changed, the data
for one sampling point is captured.
Notes:
● If the signal level at the Trigger connector is changed before the
delay time has elapsed, that signal is ignored.
● Set VBW to be larger than the reciprocal of the delay time.
● Input the TTL level when setting the external trigger signal.
● Set the frequency of the external trigger signal to 500 kHz or
less.