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Operation
2-3
KEITHLEY
ELECTROMETER
PROGRAM
DATA STORE
STATUS
SHIFT
OHMS
VOLTS
COUL
AMPS
POWER
RANGE
AUTO
ZERO CHECK
ZERO CORRECT
SUPPRESS
TRIG SGL
TALK
SELECT EXIT
MAX INPUT
250V
LISTEN
REMOTE
ADJUST
ON/OFF
RECALL EXIT
METER
DATA
6512 PROGRAMMABLE ELECTROMETER
6
7
8
1
2
3
4
5
Figure 2-1
Model 6512 front panel
AMPS—Pressing AMPS switches the instrument to the
current-measuring function. The AMPS indicator will
turn on when the instrument is in this mode.
RANGE—These two buttons allow you to increment or
decrement the range the instrument uses. Pressing the
▲
button will move the instrument up one range each time
it is operated, while the
▼
button will move the instru-
ment down range one increment each time it is pressed.
Note that pressing either of these buttons will cancel
auto-range if that mode was previously selected. The dis-
play mantissa will remain blank until the first reading is
ready to be displayed.
AUTO—The AUTO button places the instrument in the
auto-range mode. While in this mode, the Model 6512
will switch to the best range to measure the applied sig-
nal. Note that the instrument will be in the auto-range
mode when it is first turned on. Auto-ranging is available
for all functions and ranges. Auto-ranging may be can-
celled either by pressing the AUTO button or one of the
two RANGE buttons.
3 ELECTROMETER
The ELECTROMETER buttons control the measuring func-
tions, selection of instrument ranges, and such items as zero
check, zero and suppression, and front panel triggering.
VOLTS—The VOLTS button places the instrument in
the DC volts measuring mode. When VOLTS is pressed,
the indicator next to the button turns on, showing that the
instrument is set for that mode. Note that the Model 6512
will be in this mode when it is first turned on. Pressing
SHIFT/VOLTS will place the instrument in the external
feedback mode, as described in paragraph 2.9.
OHMS—Pressing OHMS places the unit in the resis-
tance measuring function. The indicator next to the
OHMS button will be illuminated when the instrument is
in this mode. Note that the instrument measures resis-
tance using the constant-current method.
COUL—The Model 6512 may be set up to measure
charge by pressing the COUL button. The indicator next
to the COUL button will illuminate when the instrument
is set for this mode.
Summary of Contents for 6512
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