Pendulum CNT-91 - Trigger Indicators Vs. Trigger Levels

Performance Check
Trigger Indicators vs. Trigger Levels
Trigger Level
(manually set)
Trigger Indicator
Pass
Input A
Input B
+1 V
off
0.0 V
on
0.5 V
blinking
Table 7-4
Trigger indicator check.
NOTE: This test must be performed in the
sequence given.
—
Recall the DEFAULT settings.
—
Press INPUT A and select MANual trigger
level, DC coupling, and
50  input
impedance.
—
Connect the LF synthesizer to Input A.
Use the following settings (into 50

):
Sine, 10 kHz, 0.9 Vpp, and +0.50 V DC.
—
Verify that the three modes for the
trigger indicator are working properly
by changing the trigger level:
—
Press the Trig key and enter +1 V via the
keyboard, then verify by pressing
EXIT/OK. Check the trigger indicator
according to Table 7-4.
—
Press the Trig key and enter 0.0 V via the
keyboard by pressing the
± key, then
verify by pressing EXIT/OK. Check the
trigger indicator according to Table 7-4.
— Press the Trig key and enter 0.5 V via the
keyboard, then verify by pressing
EXIT/OK. Check the trigger indicator
according to Table 7-4.
—
Apply the signal to Input B instead.
—
Press MEAS FUNC

Freq

Freq (A)
 B
—
Press INPUT B and select MANual trigger
level, DC coupling and
50

input
impedance.
—
Repeat the trigger level settings above to
verify the three trigger indicator modes
for Input B.
Settings
V
max
V
min
Pass/Fail
Input A
Input B
INPUT A, DC, 50 
+950 mV
+50 mV
AC
+450 mV
-450 mV
10X
+0.45V
-0.45V
1 M
> +0.45 V
< -0.45 V
Table 7-5
Input controls check.
7-7
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020