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Input Buffer
The instrument receives messages into an input buffer and only starts executing
commands after receipt of a message terminator. The buffer can store up to 100
characters including separators and terminator.
Sending a new command before the existing command is executed may cause
unreliable operation. It is advisable to query the Status Byte (*STB?) to check on the
current status of the microhmmeter before sending a new command.
Sending a command whilst the microhmmeter is transmitting (following a ? command)
may result in the transmitted response being corrupted. It is advisable to wait for the
expected response to be transmitted before sending a new command.
4.2 RS-232 Interface Commands
SYSTem:LOCal
Returns the instrument to the local mode from RS-232 operation. All keys on the
front panel are fully functional. This is the default at power-up.
SYSTem:REMote
Places the instrument in the remote mode for RS-232 operation. All keys on the
front panel are disabled.
These commands will produce a “command error” in IEEE mode. The commands
are ignored.
4.3 Configuration & Measurement Commands
Configuration Group
These commands allow the measurement configuration to be set up, but they do not
trigger a measurement.
SENSe:FRESistance:RANGe <
range
>
Sets the resistance measurement according to the following parameters. The
current measurement is aborted.
DO5000 & DO5001:
<
range
>
3MOHM
(3 mOhm)
30MOHM
(30 mOhm)
200MOHM
(200 mOhm)
3OHM
(3 Ohm)
30OHM
(30 Ohm)
300OHM
(300 Ohm)
3KOHM
(3 KOhm)
30KOHM
(30 KOhm)
AUTO1
(Autorange1 - top range first)
AUTO2
(Autorange2 - last-used range first)
DO5002:
<
range
>
300MOHM
(300 mOhm)
3OHM
(3 Ohm)
30OHM
(30 Ohm)
300OHM
(300 Ohm)
3KOHM
(3 KOhm)
30KOHM
(30 KOhm)
AUTO1
(Autorange1 - top range first)
AUTO2
(Autorange2 - last-used range first)
