User`s guide

Agilent B1500 User’s Guide, Edition 7 2- 31
Introduction
Measurement Units
B1525A High Voltage SPGU
This section describes key specification of the high voltage semiconductor pulse
generator unit (SPGU) for Agilent B1500A. Maximum five modules can be
installed in one mainframe.
• Number of output channels: 2 channels per module
• Output impedance: 50 Ω
• Output level: 0 to ± 40 V (open load), ± 20 V (50 Ω load), 1
mV resolution
• SPGU operation mode:
PG (pulse generator) or ALWG (arbitrary linear waveform generator)
• Channel output operation mode:
Free run, duration, or pulse count (PG mode)/sequence count (ALWG mode)
• PG output mode:
2-level pulse or 3-level pulse, for each channel
• Pulse timing parameters:
Period: 20 ns to 10 s, 10 ns resolution
Width: 10 ns to period-1
0 ns, resolu
tion 2.5 ns or 10 ns (transition time > 8 μs)
Delay: 0 to period-20 ns, res
olution 2.5 ns or 10 ns (transition time > 8 μs)
Transition time (leading time or trailing time): 8 ns to 400 ms, resolution 2 ns or
8 ns (transi
tion time > 8 μs)
• Pulse switch, which is more durable than mechanical relays, and better suited for
frequent s
witching applications.
• Automatic voltage level adjustment by specifying load impedance of DUT
Figure 2-7 SPGU Simplified Circuit Diagram
50
7
Pulse switch
ALWG
PG
2-level
or 3-level
Output 2
or
50
7
Pulse switch
ALWG
PG
2-level
or 3-level
Output 1
or