User`s guide

Agilent 4155C/4156C User’s Guide Vol.2, Edition 6 7-41
Measurement Units and Functions
Zero Offset Cancel
Table 7-25 Ranging Mode Available for Offset Measurement
Table 7-26 Allowable Offset Value
Measurement Mode Unit
Available Ranging
Mode
Measurement
Range
a
a. Offset data is measured in the measurement range shown above.
Current Measurement HPSMU,
MPSMU
auto 1 nA
1 nA limited or fixed 1 nA
HRSMU auto 10 pA
10 pA limited or fixed 10 pA
100 pA limited or fixed 100 pA
1 nA limited or fixed 1 nA
Differential Voltage
Measurement
VMU auto, limited auto, fixed
0.2 V
b
b. VMU2 measures voltage in grounded mode to confirm that voltage does
not exceed ±20 V.
Measurement
Mode
Unit
Measurement
Range
Allowable Offset Value
Current
Measurement
HPSMU 1 nA less than ±1 % of range
MPSMU 1 nA less than ±1 % of range
HRSMU 1 nA less than ±1 % of range
100 pA less than ±1 % of range
10 pA less than ±4 % of range
Differential Voltage
Measurement
VMU 0.2 V
less than ±1 % of range
a
a. If VMU2 grounded mode measurement value is greater than or equal to
±20 V, error occurs.