95
6.3. To Set the Screen Saver
The screen saver will run automatically if no operation is taken for any key within the set
time. Press any button to resume.
1. Press
Utility
and choose Disp Setup, press
F3
to select Scrn Svr.
2. Press
F3
to switch between On/Off.
3. If On is selected, you can set the screen saver time. Turn the
knob
to change the
value, press
/
direction key to move the cursor left and right; or press the
number keys to input the desired time in minutes, press
F4
to select the unit. The
screen saver time range is 1
～
999 minutes.
6.4. To Set the Counter (P 4125
– 4165)
The counter can measure the signal with frequency form 100mHz to 200MHz.
The operation steps:
1. Press
Utility
and choose Counter.
2. Connect the signal to the connector [20MHz In/Counter] on the rear panel.
3. Press
F3
to choose Set, enter measurement setting menu.
To set the coupling mode
: Press
F1
to switch Coupling as AC/DC.
To set the sensitivity
: Press
F2
to switch Sens as Low/Middle/High.
For low amplitude signal, the “Middle” or “High” sensitivity should be used.
For low frequency signal with high amplitude and slower rising edge, low sensitivity is
a better choice.
To set the high frequency restrain on/off:
Press
F3
to switch HFR as ON/OFF.
High frequency restrain is used for filtering the high frequency signal in measuring the
low frequency signal, and improve the measure accuracy.
To measure low frequency signal lower than 1kHz, you should put on the high
frequency restrain to filter the high frequency noise disturb.
To measure high frequency signal higher than 1kHz, you should put off the high
frequency restrain.
To set the trig level
: Press
F4
to choose TrigLev. Turn the
knob
to change the
value, press
/
direction key to move the cursor left and right; or press the
number keys to input the desired value and choose the unit. The range of trig levle is
0
～
2.5V.
Press
F5
to choose Back to previous menu, view the result.
After all the set was done, the counter will measure the signal according to the current set.
If the reading is unsteady, please repeat the above step until it is steady.
4. Press
F1
to switch to view the measure result of
frequency
or
period
.
Press
F2
to switch to view the measure result of
positive width
or
duty
.
