Pendulum CNT-90 - Short Form Specification Test; Sensitivity and Frequency Range

Performance Check
Key(s)
Display
Notes
P/F
MEAN:
VALUE
Stat parameters
disappear
Table 7-2
Keyboard test
Short Form
Specification Test
Sensitivity and Frequency
Range
—
Recall the DEFAULT settings.
—
Press INPUT A.
—
Select 50  input impedance, 1x
attenuation, MANual trigger and Trigger
level
0V.
—
Connect a signal from a HF generator to
a BNC power splitter.
—
Connect the power splitter to Input A of
your counter and an oscilloscope.
—
Set the input impedance to 50  on the
oscilloscope.
—
Adjust the amplitude according to the fol-
lowing table. Read the level on the
oscilloscope. The timer/counter should
display the correct frequency.
—
Connect the signal to Input B.
—
Press INPUT B.
—
Select 50  input impedance, 1x
attenuation, MANual trigger and Trigger
level 0V.
—
Press MEAS FUNC  Freq  Freq A

B
—
Repeat the measurements above for Input
B.
Frequency
(MHz)
Level
Pass/Fail
mV
rms
dBm
Input A
Input B
10
15
-23
50
15
-23
100
15
-23
200
15
-23
300
25
-19
Table 7-3
Sensitivity for inputs A & B at various frequencies
7-5
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020