Keithley 2002, Getting Started Manual

Page: 22 / 95

Trigger level
An appropriate trigger level is needed for the frequency counter to operate properly. The in-
strument only counts cycles with peak amplitudes that reach the trigger level. For example, if
the trigger level is set for 5V, cycles with peak amplitudes less than 5V are not counted.
Use the RANGE
▲
and
▼
keys to check and/or change the trigger level. The AUTO range
key returns the trigger level or 0V or 0mA.
Figure 7
Frequency measurements
AC voltage input
AC current input
2001 MULTIMETER
1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
EDIT ERR REM TALK LSTN SRQ REAR REL FILT MATH 4W AUTO ARM TRIG SMPL
Model 2002
Caution: Maximum Input = 1100V peak, 2 x 10
7
V•Hz
AC Voltage
Source
2001 MULTIMETER
1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
EDIT ERR REM TALK LSTN SRQ REAR REL FILT MATH 4W AUTO ARM TRIG SMPL
Model 2002
Caution: Maximum Input = 1A peak
AC Current
Source
Front Panel Operation 1-15