1-7
2. Turn on the Model 6517A and the DC calibrator, and
allow a one-hour warm-up period before making mea-
surements.
3. Restore Model 6517A factory default conditions, as
explained in paragraph 1.7.
4. Select the amps function and the 20pA range on the
Model 6517A.
5. With zero check enabled, press REL to zero correct the
instrument.
6. Set the calibrator output to 0.0000V, then disable zero
check. Enable the REL mode to null offsets.
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
INPUT
250V PEAK
!
LINE RATING
50-60HZ
50VA MAX
AC ONLY
LINE FUSE
SLOWBLOW
1/2A 90-125V
1/4A 180-250V
IEEE-488
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
DIGITAL
I/O
TRIG LINK
115V
LO
HI
RS232
!
MADE
IN
U.S.A.
PREAMP OUT
250 PEAK
COMMON
2V ANALOG
OUTPUT
TEMP
TYPE K
HUMIDITY
OPTION SLOT
V SOURCE
EXT TRIG
IN
MTR COMP
OUT
INTERLOCK
SELECTED
LINE VOLTAGE
90-110V
105-125V
180-220V
210-250V
1010V
PEAK
750V
PEAK
Low-noise Coax BNC Cable
Triax-to-BNC Adapter
Input
Model 6517 Electrometer
Calibrator
Output
BNC-to-dual
Banana Plug
Adapter (Connect
Cable Shield to
Output LO)
DC Voltage Calibrator
Figure 1-1
Connections for DC volts verification
Figure 1-2
Connections for 20pA–2µA range verification
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
INPUT
250V PEAK
!
LINE RATING
50-60HZ
50VA MAX
AC ONLY
LINE FUSE
SLOWBLOW
1/2A 90-125V
1/4A 180-250V
IEEE-488
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
DIGITAL
I/O
TRIG LINK
115V
LO
HI
RS232
!
MADE
IN
U.S.A.
PREAMP OUT
250 PEAK
COMMON
2V ANALOG
OUTPUT
TEMP
TYPE K
HUMIDITY
OPTION SLOT
V SOURCE
EXT TRIG
IN
MTR COMP
OUT
INTERLOCK
SELECTED
LINE VOLTAGE
90-110V
105-125V
180-220V
210-250V
1010V
PEAK
750V
PEAK
Low-noise
Coax Cable
Triax Cable
Model 6517 Electrometer
Connect Cable
Shield to
Output LO
BNC-to-dual
Banana Plug
Adapter
DC Voltage Calibrator
Note: Connect Calibrator to
Appropriate Resistor,
Link Shield and Chassis.
100G
Ω
1nF
100nF
10G
Ω
1G
Ω
100M
Ω
Model 5156 Electrometer Calibration Standard
OUTPUT
!
7. Record the actual resistance values (see Model 5156 cal-
ibration data) in the appropriate column of Table 1-6.
8. Calculate the actual calibration voltage from the desired
current and the actual value of the 100G
Ω
resistor as
determined from the calibration data as follows:
V = IR
Where: I = desired current applied to Model 6517A
V = actual voltage from DC voltage calibrator
R = actual value of calibration standard resistance