Keithley 6512, Instruction Manual

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2-1
2.1 Introduction
Operation of the Model 6512 may be divided into two gen-
eral categories: front panel operation and IEEE-488 bus op-
eration. This section contains information necessary to use
the instrument on a front-panel basis. Note that most of these
functions can also be programmed over the IEEE-488 bus, as
described in Section 3.
The following paragraphs contain a complete description of
Model 6512 front panel operation. First a complete descrip-
tion of each front and rear panel function is presented. Next
the complete procedure for each of the measuring functions
is presented. Finally, the analog output and guard functions
are described along with a method to apply external feed-
back.
2.2 Power-up procedure
Use the procedure below to connect the Model 6512 to line
power and power up the instrument.
1. Connect the female end of the power cord to the AC re-
ceptacle on the rear panel of the instrument. Connect the
other end of the cord to a grounded AC outlet.
WARNING
The Model 6512 is equipped with 3-wire
power cord that contains a separate
ground wire and is designed to be used
with grounded outlets. When proper
connections are made, instrument chas-
sis is connected to power line ground.
Failure to use a grounded outlet may re-
sult in personal injury or death because
of electric shock.
CAUTION
Be sure that the power line voltage
agrees with the indicated range on the
rear panel of the instrument. Failure to
observe this precaution may result in in-
strument damage. If necessary, the line
voltage may be changed, as described in
Section 7.
2. Turn on the power by pressing in the front panel POW-
ER switch. The switch will be at the inner most position
when the instrument is turned on.
3. The instrument will power up in the volts function, in
the auto-range mode and with zero check enabled, as in-
dicated by the associated front panel LEDs. All other
LEDs will be off when the instrument is first turned on.
Table 2-1 summarizes front panel power-up default con-
ditions.
Table 2-1
Front panel power-up default conditions
Mode Power-up status
Function
Range
Zero Check
Suppression
Trigger
Data Store Volts
Auto-range
Enabled
Disabled
Continuous, External
Disabled
2
Operation