5.Front Panel Operation
35
To Set the Counter
The counter can measure the signal with frequency from 100 mHz to 200 MHz.
The operation steps:
(1)
Press
Utility
and choose Counter.
(2)
Connect the signal to the connector [
Ref Clk/Counter In
] 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 1 kHz, you should put on the high
frequency restrain to filter the high frequency noise disturb.
To measure high frequency signal higher than 1 kHz, 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 -2.5 V - 2.5 V.
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
.
To Set Output Parameter
To Set the Output Load
For either of
CH1 Output
and
CH2 Output
on the Front panel, the Generator has a built-in
50Ωseries impendence. If the actual load does not match the set one, the displayed
amplitude and offset are incorrect. This function is used to match the displayed voltage
with the expected one.
Steps for setting the Load of each channel:
(1)
Press
Utility
and choose Output Setup
.
Press
F1
to select CH1Load, or press
F2
to select CH2Load; press it again to select HighZ or *
Ω
("*" represents a value).
(2)
To change the load value, after selecting *
Ω
, 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. Press
F3
or
F4
to select the unit. The load range is
1
Ω
- 10 k
Ω
.
