2-18
Table 2-11
IEEE-488 bus amps calibration summary (20pA-2µA ranges)
Calibration
voltage
Resistance
1
standard
Nominal
2
current
Calibration command
Triax cap
Triax cap
Triax cap
Triax cap
Triax cap
Triax cap
1.900000V
-1.900000V
1.900000V
-1.900000V
1.900000V
-1.900000V
1.900000V
-1.900000V
19.00000V
-19.00000V
190.0000V
-190.0000V
100G
Ω
10G
Ω
1G
Ω
100M
Ω
100M
Ω
100M
Ω
100G
Ω
100G
Ω
10G
Ω
10G
Ω
1G
Ω
1G
Ω
100M
Ω
100M
Ω
100M
Ω
100M
Ω
100M
Ω
100M
Ω
0pA
0pA
0nA
0nA
0nA
0µA
19pA
-19pA
190pA
-190pA
1.9nA
-1.9nA
19nA
-19nA
190nA
-190nA
1.9µA
-1.9µA
:CAL:PROT:AZERO20P
:CAL:PROT:AZERO200P
:CAL:PROT:AZERO2N
:CAL:PROT:AZERO20N
:CAL:PROT:AZERO200N
:CAL:PROT:AZERO2U
:CAL:PROT:A20PCARD 1.9
:CAL:PROT:AN20PCARD -1.9
:CAL:PROT:A200PCARD 1.9
:CAL:PROT:AN200PCARD -1.9
:CAL:PROT:A2NCARD 1.9
:CAL:PROT:AN2NCARD -1.9
:CAL:PROT:A20NCARD 1.9
:CAL:PROT:AN20NCARD -1.9
:CAL:PROT:A200NCARD 19
:CAL:PROT:AN200NCARD -19
:CAL:PROT:A2UCARD 190
:CAL:PROT:AN2UCARD -190
1
Actual resistance standard value determined from calibration data supplied with standard.
2
Actual calibration current : I = V/R, where is the calibration voltage, and R is the actual resistance standard value.
When using the Model 5156 Electrometer Calibration Standard, the Model 6517A automatically calculates the cur-
rent from the applied voltage and actual resistance value.
Table 2-12
IEEE-488 bus amps calibration summary (20µA-20mA ranges)
Calibration
current
Calibration command
Triax cap
Triax cap
Triax cap
Triax cap
19.00000µA
19.00000µA
190.0000µA
190.0000µA
1.900000mA
1.900000mA
19.00000mA
19.00000mA
:CAL:PROT:AZERO20U
:CAL:PROT:AZERO200U
:CAL:PROT:AZERO2M
:CAL:PROT:AZERO20M
:CAL:PROT:A20U 19E-6
:CAL:PROT:AN20U -19E-6
:CAL:PROT:A200U 190E-6
:CAL:PROT:AN200U -190E-6
:CAL:PROT:A2M 1.9E-3
:CAL:PROT:AN2M -1.9E-3
:CAL:PROT:A20M 19E-3
:CAL:PROT:AN20M -19E-3