1-8 Getting Started Model 6485 Picoammeter Instruction Manual
HALT Stops measurement process. Puts 6485 in idle state.
DIGITS Use to set display resolution.
RATE Use to select measurement rate.
and Use to control cursor position for making selections or editing values.
SAVE Use to save present setup to a memory location.
SETUP Use to restore setup to either GPIB or factory defaults, or to a user memory location.
Also use to modify properties of power on defaults to either GPIB or factory defaults,
or to a user memory location.
STORE Use to start buffer and modify the number of readings to store.
RECALL Use to display stored readings (including maximum, minimum, peak-to-peak, aver-
age, and standard deviation). The and range keys scroll through the buffer, and
the or key toggles between reading number, reading, and timestamp.
LIMIT Use to perform and create limit tests.
AZERO Use to control auto zero function (on / off).
EXIT Use to cancel selection and move back to measurement display.
ENTER Use to accept selection and move to next choice or back to measurement display.
4 Range keys
Use to select the next higher measurement range. Also use to modify the upper auto-
range limit.
Use to select the next lower measurement range. Also use to modify the lower auto-
range limit.
AUTO Enables/disables autorange.
5 Display annunciators
* (asterisk) Readings being stored in buffer.
(more) Indicates additional selections are available.
AUTO Autorange enabled.
BUFFER Recalling readings stored in buffer.
ERR Questionable reading, or invalid cal step.
FAST Fast (0.1 PLC) reading rate selected.
FILT MEDIAN and/or AVERAGE filter enabled.
LSTN Instrument addressed to listen over GPIB.
MATH mX+b, m/X+b, or log10 calculation enabled.
MED Medium (1 PLC) reading rate selected.
REL Relative enabled for present measurement function.
REM Instrument in GPIB remote mode.
SLOW Slow reading rate selected; 6 PLC for 60Hz or 5 PLC for 50Hz.
SRQ Service request over GPIB.
STAT Displaying buffer statistics.
TALK Instrument addressed to talk over GPIB bus.
TIMER Timer controlled triggering in use.
TRIG External triggering (GPIB or trigger link) selected.
6 Handle
Pull out and rotate to desired position.
Rear panel summary
The rear panel of Model 6485 is shown in Figure 1-2.
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