User`s guide

Agilent 4155C/4156C User’s Guide Vol.2, Edition 6 7-35
Measurement Units and Functions
Measurement Time
MEDIUM Medium mode automatically sets the integration time. You cannot change this value.
To set medium mode, press the
Medium front-panel key.
Integration time 1 PLC
For the current measurements, the integration time is
automatically set as shown in Table 7-23.
SHORT Short mode is effective when you need high-speed measurements, but the
measurement data has lower resolution. To set short mode, press the
Short
front-panel key. In this mode, the ADC zero function is always disabled.
Initial setting 640 μs
Integration time Available values: 80 μs to 1.92 ms with 80 μs resolution.
For the current measurements, if the integration time you set is
from 960 μs to 1.92 ms, integration time is automatically set as
shown in Table 7-24.
Table 7-22 Integration Time in Long Mode (without ADC Zero)
Table 7-23 Integration Time in Medium Mode (without ADC Zero)
Measurement Range Integration Time (max. 100 PLC)
10 pA Always 100 PLC (HRSMU)
100 pA Setting value × 10 (HRSMU)
1 nA Setting value × 5 (HRSMU)
Setting value (MPSMU / HPSMU)
10 nA to 100 mA Setting value
1 A Setting value (HPSMU)
Measurement Range Integration Time
10 pA 50 PLC (HRSMU)
100 pA 10 PLC (HRSMU)
1 nA 5 PLC (HRSMU)
3 PLC (MPSMU / HPSMU)
10 nA to 100 mA 1 PLC
1 A 1 PLC (HPSMU)