![background image](http://html2.mh-extra.com/html/keithley/6514/6514_instruction-manual_4064199251.webp)
Performance Verification
18-17
200M
Ω
-200G
Ω
range accuracy
1.
Connect Model 5156 Electrometer Calibration Standard to Model 6514, as shown in
Figure 18-5. Initially, connect the BNC shorting cap to the 100M
Ω
resistance jack. Be
sure to remove the link between SHIELD and CHASSIS, and connect Model 5156
CHASSIS jack to Model 6514 COMMON terminal.
WARNING
Hazardous voltage may be present on Model 5156 SHIELD and OUTPUT
jacks.
2.
Select Model 6514 ohms function with the
Ω
key.
3.
Using the GRD key, enable Model 6514 guard mode.
4.
Verify resistance measurement accuracy for the 200M
Ω
-200G
Ω
ranges as listed in Table
18-6. For each test point:
•
Select the correct Model 6514 measurement range.
•
Connect the BNC shorting cap to select the appropriate standard resistor.
•
If the standard resistance differs from the nominal value, recalculate new reading
limits based on the resistance and Model 6514 accuracy specifications.
•
Verify that Model 6514 resistance reading is within the required reading limits.
Table 18-6
200M
Ω
-200G
Ω
resistance measurement accuracy limits
Model 6514 range
Standard resistance
1
Model 6514 ohms reading limits
(1 Year, 18˚C-28˚C)2
200M
Ω
100M
Ω
99.697 to 100.303M
Ω
2G
Ω
1G
Ω
0.98496 to 1.01504G
Ω
20G
Ω
10G
Ω
9.8497 to 10.1503G
Ω
200G
Ω
100G
Ω
98.497 to 101.503G
Ω
1
Nominal resistance values.
2
Reading limits based on Model 6514 accuracy specifications and nominal resistance values. If
actual resistance values differ from nominal values shown, recalculate reading limits using actual
standard resistance values and Model 6514 one-year accuracy specifications. See Verification
limits earlier in this section for details.
RS232
DIGITAL I/O
PREAMP
250V PK
2V
OUTPUT
COMMON
CHASSIS
120
FUSE
LINE
630mA
LINE RATING
50, 60Hz
60 VA MAX
T
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
INPUT 250V PK
IEEE-488
(CHANGE IEEE
WITH FRONT PANEL MENU)
TRIGGER LINK
!
!
MADE IN
U.S.A.
V,
GUARD
(PROGRAMMABLE)
OFF
ON
GUARD
(FOLLOWS
INPUT)
(INTERNAL)
INPUT
PREAMP
10K
PREAMP
OUT
2V
OUTPUT
COM
To Shield
Model 6514 Electrometer
Triax Cable
100G
Ω
100M
Ω
10G
Ω
1G
Ω
1nF
100nF
OUTPUT
Model 5156 Calibration Standard
!
BNC shorting
cap
Remove SHIELD to CHASSIS link
Connect SHIELD to 6514 COMMON
Note: Enable guard mode.
Input
Figure 18-5
Connections for ohms
verification (200M
Ω
-
200G
Ω
ranges)
Summary of Contents for 6514
Page 203: ...14 CommonCommands...
Page 207: ...15 SCPISignalOriented MeasurementCommands...
Page 235: ...18 PerformanceVerification...
Page 254: ...19 Calibration...
Page 274: ...20 RoutineMaintenance...
Page 278: ...A Specifications...
Page 282: ...B StatusandErrorMessages...
Page 288: ...C GeneralMeasurement Considerations...
Page 294: ...D DDCEmulationCommands...
Page 299: ...E ExamplePrograms...
Page 306: ...F IEEE 488BusOverview...
Page 320: ...G IEEE 488andSCPI ConformanceInformation...
Page 324: ...H CalibrationOptions...