Keysight Technologies B1505A, Configuration Manual

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Keysight B1505A Configuration and Connection Guide 3-23
N1265A Connection Guide
Output Connection
Figure 3-13 Space around Cable End
Universal R-Box (N1265A-035)
This is a blank box, kind of a do-it-yourself kit for installing a resistor you want. Generally,
inserting a resister between SMU and DUT is effective for preventing SMU from
oscillation. You can insert your desired resistor by using this box. This box is designed for
using the MCSMU. See
Figure 3-14 for connection example.
NOTE To install your desired resistor in the universal R-box, see "To Use Universal R-Box" .
The Kelvin connection is effective up to the R-box input. So the voltage drop caused by the
series resistor must be subtracted from the measurement result as following.
Vdut = Vout
-
Rs

Imeas
where,
Vdut: Voltage after correction
Vout: Source output voltage
Rs: Resistance of the series resistor
Imeas: Measurement current
Figure 3-14 Series Resistor Connection Example
To Use Universal R-Box
To install your desired resistor, see the following simple instruction.
• Required parts:
To UHVU High
To UHVU Low
DUT
Shield
Signal line
Insulator
SHV Cable UHV Cable
Insulator
¡
32 mm for 10 kV
¡
100 mm for 10 kV
Force
Guard
Force
Guard
Force
Guard
Force
Guard
Force
Guard
Force
Guard
Sense Force Sense Force Sense Force
± 200 V Max 1 A
SMU SMU
±200 V Max 2 A dc 40 A Pulse
Force
High
Low
High
Low
High
Low
High
Low
±40 V Max 1 A Pulse
Guard Sense
±3 kV Max ±3 kV Max
Selector Output
Low High
1 2
K Thermocouple
±3 V Max
Bias Tee
High
Low
±10 kV Max
UHV
1 2 3
Gate
Attach N1265A-035 R-box.
Use N1254A-508/509 wire.
Use N1254A-522 wire for High/Low Force.
High
Low
Base: SMU1 High (MCSMU)
Collector: Selector Output High Force and Sense
Emitter: Selector Output Low Force and Sense
and SMU1 Low (MCSMU)