3-2 Keysight B1505A Configuration and Connection Guide
N1265A Connection Guide
This chapter describes the required information for connecting Keysight B1505A,
N1265A, and a device under test (DUT).
• "Input Connection"
• "Output Connection"
The N1265A is a test fixture which contains the current expander to enable 500 A or 1500
A (option N1265A-015) output and measurement, and contains the selector to switch the
measurement resource connected to the DUT.
The current expander is used to configure ultra high current unit (UHCU).
The selector is used to switch the measurement resource connected to the DUT. The
measurement resource will be the UHCU, HVSMU/HVMCU, or HP/MPSMU. The
selector output can be extended to your prober station by using the N1254A-524 ultra high
current prober system cable.
The N1265A also provides the connection paths for UHVU, MFCMU via bias-tee, and
HP/MP/HC/MC/DHCSMU.
• Dimensions: 420 mm (W) 285 mm (H) 575 mm (D)
• Weight: 30.0 kg
• Maximum volt-amps: 400 VA
WARNING To avoid electrical shock and instrument damage, turn the all instruments off before
connecting or disconnecting measurement cable.
WARNING There are potentially hazardous voltages of up to ± 10 kV (UHVU), ± 3000 V
(HVSMU), ± 2200 V (HVMCU), ± 200 V (HPSMU), or ± 100 V (MPSMU) at the High,
Force, Guard, and Sense terminals. To prevent electrical shock, do not expose these
lines.
WARNING To prevent electrical shock during use, connect the Interlock cable (see "To Connect
Interlock Circuit" on page 3-5).
WARNING The B1505A, the N1265A ultra high current expander/fixture, and the N1268A ultra
high voltage expander are heavy and require a two person lift.
CAUTION Do not grab the fixture cover when lifting the N1265A.
CAUTION Never connect the Guard terminal to any output, including circuit common, chassis
ground, or any other guard terminal. Connecting anything may damage the instrument.
CAUTION Never connect the UHVU High, HVMCU High, and HVSMU Force and Guard terminals
to any output, including circuit common, chassis ground, or any other measurement
resource such as SMU. Connecting other measurement resource may damage the
connected one.
CAUTION Never connect the UHVU Low terminal to any other measurement resource except for the
N1269A or N1265A-040 adapter. Connecting other measurement resource may damage
the connected one.
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