Keithley 2002 User Manual page 346

HP3458A Emulation Mode
ERRSTR?
Purpose
Format
Response
Description
FREQ
Purpose
Format
Parameter
Description
Example
FSOURCE
Purpose
Format
Parameter
Default
Query
Description
H-8
To request the error number and error response string.
ERRSTR?
<error_number>, <error_string>
The ERRSTR? query returns two responses separated by a comma. The first response is the error num-
ber, and the second is the message explaining the error.
Unlike the HP3458, Model 2002 errors are returned in the order generated instead of the error reg-
ister bit order. No error register bits are cleared until the last error is read at which time all bits are
cleared.
To select the frequency measurement function.
FREQ <max_input>,<%_resolution>
1V, 10V, or 100V
<max_input>
Ignored
<%_resolution>
The FREQ command selects the frequency measurement mode for the Model 2002. The first param-
eter selects a maximum input level of 1V, 10V, or 100V, while the second parameter is not supported
by the Model 2002 and will be ignored.
Select frequency.
FREQ
Select frequency, 10V maximum input.
FREQ 10
To select the signal type for frequency or period measurements.
FSOURCE <source>
<source>
<source> parameter Numeric equivalent
ACV 2
ACDCV 3
ACI 7
ACDCI 8
ACV
Returns the present frequency source.
FSOURCE?
The FSOURCE command specifies the type of signal to be used as the input signal for frequency or
period measurements. Signal types include AC voltage, AC current, AC+DC voltage, and AC+DC
current.
Description
AC voltage
AC+DC voltage
AC current
AC+DC current