Presetting The Multimeter - Agilent Technologies 3458A User Manual

Presetting the
Multimeter
52 Chapter 3 Configuring for Measurements
The PRESET NORM command is similar to the RESET command but
configures the multimeter to a good starting point for remote operation.
(RESET is primarily for front panel use.) It's a good idea to execute PRESET
NORM as the first step when configuring the multimeter since it sets the
multimeter to a known configuration and suspends readings by setting the
trigger event to synchronous (TRIG SYN) command. Table 10 shows the
commands executed by the PRESET NORM command.
Table 10: PRESET NORM State
Command
ACBAND 20,2E+6
AZERO ON
BEEP ON
DCV AUTO
DELAY –1
DISP ON
FIXEDZ OFF
FSOURCE ACV
INBUF OFF
LOCK OFF
MATH OFF
MEM OFF
MFORMAT SREAL
MMATH OFF
NDIG 6
NPLC 1
NRDGS 1,AUTO
OCOMP OFF
OFORMAT ASCII
TARM AUTO
TIMER 1
TRIG SYN
All math registers set to 0 except:
DEGREE = 20
PERC = 1
REF = 1
RES = 50
SCALE = 1
When attempting to preset from remote, it is possible that the multimeter is
busy or the GPIB interface is being held. In either case, the multimeter will
not respond to a remote command. It's good practice to send the GPIB Device
Clear command prior to presetting the multimeter. The multimeter responds
immediately to the Device Clear command. The following program sends
the Device Clear command followed by the PRESET NORM command:
10 CLEAR 722
20 OUTPUT 722;"PRESET NORM"
Description
AC bandwidth 20Hz - 2MHz
Autozero enabled
Beeper enabled
DC voltage measurements, autorange
Default delay
Display enabled
Disable fixed input resistance
Frequency and period source is AC voltage
Disable input buffer
Keyboard enabled
Disable real-time math
Disable reading memory
Single real reading memory format
Disable post-process math
Display 6.5 digits
1 power line cycle of integration time
1 reading per trigger, auto sample event
Disable offset compensated ohms
ASCII output format
Auto trigger arm event
1 second timer interval
Synchronous trigger event