2-8
6. Set the output of the DC voltage calibrator to exactly
+1.900000V, then press the Model 6517A ENTER key.
The instrument will then prompt for the exact calibra-
tion value:
1.9000000 V
Use
▲
,
▼
, , ,ENTER,EXIT
or
INFO
7. If necessary, use the range and cursor keys to set the dis-
played value to the exact calibrator voltage value.
NOTE
For optimum accuracy, it is recommended
that you use the default values throughout
the entire calibration procedure.
8. After setting the calibration value, press ENTER to con-
tinue. During this step, the instrument will display the
following:
Performing 2 V Calibration
9. Next, the unit will prompt you to apply -1.9V:
CONNECT -2.000000 V
ENTER to continue; EXIT to abort
10. Set the DC voltage calibrator output
to exactly
-1.9000000V DC, then press ENTER. Again, the unit
will prompt you for the actual applied voltage:
-1.9000000 V
ENTER to continue; EXIT to abort
11. Again, set the displayed value to agree with the calibra-
tor voltage, then press ENTER. During this step, the unit
will display the following:
Performing -2V Calibration
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 2-2
Connections for DC volts calibration
12. Repeat steps 5 through 11 for 20V and 200V ranges
using the values summarized in Table 2-3. After per-
forming all volts calibration points, continue with amps
calibration detailed below.
Step 4: Amps Calibration
1. At this point, the Model 6517A will display the follow-
ing message:
CONNECT TRIAX CAP
ENTER to continue; EXIT to abort
2. Connect the triax shielding cap to the INPUT jack.
3. Press the Model 6517A ENTER key. During this cali-
bration step, the instrument will display the following:
Performing 0 A Calibration
Table 2-3
Volts calibration summary
6517A
range
Applied
calibration
voltage
Comments
—
2V
2V
20V
20V
200V
200V
0.0000000V DC
+1.9000000V DC
-1.9000000V DC
+19.000000V DC
-19.000000V DC
+190.00000V DC
-190.00000V DC
Volts zero cal
Positive 95% of full range
Negative 95% of full range
Positive 95% of full range
Negative 95% of full range
Positive 95% of full range
Negative 95% of full range