Agilent Technologies B1500A Guia do Utilizador descarregar pdf (Página 79)

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101

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

Pulse switch

ALWG

2-level

or 3-level

Output 2

Pulse switch

ALWG

2-level

or 3-level

Output 1

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 627 628

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