Pendulum CNT-90 Series User Manual

Performance Check
EXT ARM IN
Selected
Function
Action
Display
P/F
RECALL DEFAULT
2)
FREQ A
10 MHz (10 dec.)
FREQ B
10 MHz (10 dec.)
FREQ RATIO
A/B
1 (4 dec.)
FREQ RATIO
B/A
1 (4 dec.)
FREQ BtB A
1)
10 MHz (9 dec.)
FREQ BtB B
1)
10 MHz (9 dec.)
FREQ BURST A
10 MHz (6 dec.)
FREQ BURST B
10 MHz (6 dec.)
PER SINGLE A
100 ns (2 dec.)
PER SINGLE B
100 ns (2 dec.)
PER SINGLE
BtB A
1)
100 ns (6 dec.)
PER SINGLE
BtB B
1)
100 ns (6 dec.)
PER AVERAGE
A
100 ns (9 dec.)
PER AVERAGE
B
100 ns (9 dec.)
TIME INT A - B
0 ns (2 dec.)
TIME INT A - A
0 ns (2 dec.)
TIME INT B - A
0 ns (2 dec.)
TIME INT B - B
0 ns (2 dec.)
SLOPE B
TIME INT A - B
50 ns (2 dec.)
RISE TIME A
30 ns (2 dec.)
RISE TIME B
30 ns (2 dec.)
FALL TIME A
30 ns (2 dec.)
FALL TIME B
30 ns (2 dec.)
TIE A
1)
0 ns (2 dec.)
TIE B
1)
0 ns (2 dec.)
PULSE W POS A
50 ns (2 dec.)
PULSE W NEG A
50 ns (2 dec.)
PULSE W POS B
50 ns (2 dec.)
PULSE W NEG B
50 ns (2 dec.)
DUTY POS A
0.5 (3 dec.)
DUTY NEG A
0.5 (3 dec.)
DUTY POS B
0.5 (3 dec.)
DUTY NEG B
0.5 (3 dec.)
RECALL DEFAULT
PHASE A rel A
0° (360°)
PHASE A rel B
0° (360°)
PHASE B rel A
0° (360°)
PHASE B rel B
0° (360°)
TOT A
incrementing
TOT B
incrementing
TOT A+B
incrementing
TOT A-B
0
TOT A/B
1.000...
VOLT P-P A
1.5 (3 dec.)
VOLT MAX A
750 mV
VOLT MIN A
-750 mV
VOLT P-P B
1.5 (3 dec.)
VOLT MAX B
750 mV
VOLT MIN B
-750 mV
—
Proceed from the test above.
—
Select MANual trigger.
—
Settings for the pulse generator:
single shot pulse, manual trigger,
amplitude TTL = 0 - 2 V
PP
, and
duration = 10 ns.
—
Connect the pulse generator to Ext Arm
Input.
—
Activate start arming by keying in the
following sequence:
SETTINGS
 Start Chan  E
—
The counter does not measure.
—
Apply one single pulse to Ext Arm Input.
—
The counter measures once and shows
10 MHz on the display.
PULSE OUT (CNT-91 only)
–
Connect an oscilloscope to the pulse
output on the rear panel with a 50 
coaxial cable terminated at the scope
input with 50

(internally or externally).
–
Select the pulse output by keying in the
following sequence: USER OPT

Output  Output Mode  Puls Gen
–
Select Pulse Period and set the value to
1000 ns.
–
Select Pulse Width and set the value to
500 ns.
–
The output signal should be a pure square
wave signal with 1 MHz frequency and
50 % duty cycle. The rise/fall time should
be approximately 2 ns. The low and the
high level should be <0.2 V resp. >2.4 V.
Table 7-7
Measuring functions check
Notes: 1) Applies to CNT-91 only; 2) Change default set tings
according to “Measuring Functions” below.
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020
7-10

Pendulum CNT-90 Series Specifications

General

Brand	Pendulum
Model	CNT-90 Series
Category	Measuring Instruments
Language	English