Figure 18-10 Connections For Remote Preamp 2Tω And 20Tω Range Verification; Tω And 20Tω Range Accuracy - Keithley 6430 Instruction Manual

18-30 Performance Verification
4.
Table 18-15
Remote PreAmp 2GΩ-200GΩ range measurement accuracy limits
Model 6430 range
1
Nominal values shown. Use characterized values.
2
Calculated using Model 6430 normal accuracy specifications and Model 5156 nominal values. Limits include
Model 5156 characterization accuracy.
2TΩ and 20TΩ range accuracy
1.
Figure 18-10
Connections for Remote
PreAmp 2TΩ and 20TΩ
range verification
Verify ohms measurement accuracy for each of the resistance values listed in
Table 18-15. For each measurement:
• Connect the BNC shorting cap to select the appropriate resistance value.
• Select the appropriate ohms measurement range with the RANGE keys.
• Verify that the Model 6430 resistance reading is within the limits given in the
table.
Standard resistance
2GΩ 1GΩ
20GΩ 10GΩ
200GΩ 100GΩ
With the power off, connect the characterized 1TΩ resistor directly to the Remote
PreAmp IN/OUT HIGH jack as shown in Figure 18-10. (Use a male triax-to-triax
adapter.)
Model 6430
WARNING: WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY. NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
HI 5V
PK
V, Ω,
GUARD
5V
250V 5V 250V
PEAK
PEAK PEAK PEAK
GUARD
SENSE
LO
4-WIRE INPUT/
42V
SENSE OUTPUT
PEAK
IEEE-488
(ENTER IEEE ADDRESS
WITH FRONT PANEL MENU) TRIGGER
LINK
RS232
CAUTION: CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING. FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
Mainframe/PreAmp
Cable
Model 6430 resistance reading limits
1
MADE IN
U.S.A.
REMOTE !
PreAmp
LINE FUSE
SLOWBLOW
2.5A, 250V
LINE RATING
100-240VAC
50, 60, HZ
100VA MAX
INTERLOCK-
DIGITAL I/O
Connect Resistor to
IN/OUT HIGH Jack
using Triax Adapter
Test Resistor
(See Figure 18-1)
Remote PreAmp
(1 year, 18°-28°C)
0.99875 to 1.00125GΩ
9.9865 to 10.0135GΩ
99.735 to 100.265GΩ
2