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Agilent 4155B/4156B User’s Guide Vol.2, Edition 5 1-21
Measurement Units
Pulse Generator Unit (PGU)
If the impedance of the load connected to the PGU differs from the specified
impedance in the IMPEDANCE field on the MEASURE: PGU SETUP screen or
the STRESS: STRESS SETUP screen, the average output current may exceed 100
mA. If so, a warning message is displayed.
When you use two PGUs, the outputs are always synchronized with each other. The
PGUs cannot be synchronized with the other measurement units.
The following describe each pulse parameter. For more details, see
“MEASURE: PGU SETUP screen” in Chapter 6.
Pulse count
Allowable range: 1 to 65535. If you use two PGUs, both PGUs are set to the same
pulse count. You
cannot set different values for each PGU.
Pulse period, pulse width, delay time
Each parameter has six setting ranges as shown in Table 1-15.
Table 1-15 Ranges of Pulse Period, Pulse Width and Delay Time
The pulse period, pulse width, and delay time must be set in the same range. Also, if
you use two PGUs, both PGUs are set to the
same pulse period value. So, these three
parameters must be set in the same range for both PGUs.
Range Pulse Period Pulse Width Delay Time
a
a. The setting range of delay time is 0
£
delay time
£
specified pulse period .
Resolution
1 2.0
m
s to 100.0
m
s 1.0
m
s to 99.9
m
s 0 to 100.0
m
s 0.1
m
s
2 100
m
s to 1000
m
s 1
m
s to 999
m
s 0 to 1000
m
s 1
m
s
3 1.00 ms to 10.00 ms 0.01 ms to 9.99 ms 0 to 10.00 ms 10
m
s
4 10.0 ms to 100.0 ms 0.1 ms to 99.9 ms 0 to 100.0 ms 100
m
s
5 100 ms to 1000 ms 1 ms to 999 ms 0 to 1000 ms 1 ms
6 1.00 s to 10.00 s 0.01 s to 9.99 s 0 to 10.00 s 10 ms