Remote Operations Using the IEEE 488 Interface
Syntax Diagrams of Major 8508A Functions
4
TWO_WR
Selects 2-wire Ohms (Use Hi and Lo terminals). (For backwards compatibility TWR can
also be used.)
FOUR_WR
Selects 4-wire Ohms. (For backwards compatibility FWR can also be used.)
Power On and Reset Conditions
20 MΩ, FILT_OFF, RESL6, FAST_OFF, TWO_WR
Resistance: True OHMS
The following commands are used to select the True
OHMS function and set its
configuration.
TRUE_OHMS
,
Nrf
AUTO
RESL5
RESL6
RESL7
RESL8
FAST_O
LOI_ON
FF
phs
FAST_ON
LOI_OFF
adj214f.eps
True OHMS
Nrf
A numeric value that selects the range for the expected signal. Any valid numeric value
cancels autorange.
AUTO
Selects the autorange mode where the multimeter will determine the appropriate range for
the measured signal. If the signal exceeds the maximum capability then
RANGE
OVERLOAD
appears on the front panel and the appropriate bit is set in the device status
registers.
RESL5 / RESL6 / RESL7 / RESL8
Sets the resolution of the measurement to 5.5, 6.5, 7.5, or 8.5 digits.
FAST_ON / FAST_OFF
FAST_ON
Reduces the A-D integration time, for faster conversions.
LOI_ON / LOI_OFF
Selects low current mode.
Power On and Reset Conditions
20 kΩ, RESL7, FAST_ON, LOI_OFF
4-15
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