Agilent Technologies 4156b, User Manual, Page: 32 / 414

1-14 Agilent 4155B/4156B User’s Guide Vol.2, Edition 5
Measurement Units
Source/Monitor Unit (SMU)
Table 1-12 HPSMU Measurement Current Values and Resolutions
When SMU is pulsed source, set pulse parameters in following ranges:
Pulse width 0.5 ms to 100 ms, 100
m
s resolution
Pulse period 5 ms to 1 s, 100
m
s resolution
where pulse period
³
pulse width + 4 ms
Be aware that if any of following are true, pulsed SMU channel may not output the
pulse period and pulse width you specified:
• Measurement range differs from compliance range (lowest range that includes
compliance).
• Ranging mode is set to auto range or limited auto range.
• Multi-channel measurement is set.
Range
Measurement Value
a
a. This column is applied to the auto ranging or the limited auto ranging. For fixed ranging, maximum mea-
surement value is
Range
column value.
Measurement Resolutions
b
b. Measurement resolution depends on the integration time setting. For Knob sweep measurement, see the
column of Integration Time 80
m
s to 560
m
s.
Integration Time
High Speed
Sampling
Measurement
c
c. This column is applied to the sampling measurement that initial interval is set to 480
m
s or shorter.
1PLC or
Longer
640
m
s to 1.92
ms
80
m
s to 560
m
s
1 nA 0
£ ½
I
½ £
1.15 nA 10 fA 10 fA 100 fA 1 pA
10 nA 0
£ ½
I
½ £
11.5 nA 10 fA 100 fA 1 pA 10 pA
100 nA 0
£ ½
I
½ £
115 nA 100 fA 1 pA 10 pA 100 pA
1
m
A 0
£ ½
I
½ £
1.15
m
A 1 pA 10 pA 100 pA 1 nA
10
m
A 0
£ ½
I
½ £
11.5
m
A 10 pA 100 pA 1 nA 10 nA
100
m
A 0
£ ½
I
½ £
115
m
A 100 pA 1 nA 10 nA 100 nA
1 mA 0
£ ½
I
½ £
1.15 mA 1 nA 10 nA 100 nA 1
m
A
10 mA 0
£ ½
I
½ £
11.5 mA 10 nA 100 nA 1
m
A 10
m
A
100 mA 0
£ ½
I
½ £
50 mA 100 nA 1
m
A 10
m
A 100
m
A
50 mA <
½
I
½ £
115 mA 100 nA 1
m
A 10
m
A 100
m
A
1 A 0
£ ½
I
½ £
1 A 1
m
A 10
m
A 100
m
A 1 mA