Tektronix 8101-4TRX Users Guide
Model 8101-4TRX Four Pin Test Fixture
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
(440) 248-0400
www.keithley.com
User’s Guide
Overview
WARNING The procedures contained in this User’s Guide are intended for use
by qualified service personnel only. Do not perform these procedures
unless qualified to do so. Failure to recognize and observe normal
safety precautions could result in personal injury or death.
The 8101-4TRX test fixture is a metal case with four female triaxial connectors (SMU1–4) and a latch on
the outside (see Figure 1). Inside the test fixture is one 4-pin device holder (transistor socket). The inner
conductor of each triax connector is wired to the closest pin on the 4-pin device holder (see Specifications
at the end of this document). The inner shield of the triax connectors are “no connects.” The triax connectors’ outer shield is connected to the test fixture’s metal case.
Figure 1
Test fixture
Cover
SMU1
SMU2
Tra ns ist or s ocke t
SMU4
SMU3
Tri ax con ne cto r
Outer shield
Inner conductor
Inner shield
Latch
PA-863 Rev. B / 04-05
General definitions
The types of product users are:
Responsible body is the individual or group responsible for the use and maintenance of equipment, and
for ensuring that operators are adequately trained.
Operators use the product for its intended function. They must be trained in electrical safety procedures
and proper use of the instrument. They must be protected from electric shock and contact with hazardous
live circuits.
Maintenance personnel perform routine procedures on the product to keep it operating, for example, set-
ting the line voltage or replacing consumable materials. Maintenance procedures are described in the
manual. The procedures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.
Service personnel are trained to work on live circuits, and perform safe installations and repairs of prod-
ucts. Only properly trained service personnel may perform installation and service procedures.
If is present, connect it to safety earth ground using the wire recommended in the user documentation.
!
The symbol on an instrument indicates that the user should refer to the operating instructions located
in the manual.
The symbol on an instrument shows that it can source or measure 1000 volts or more, including the
combined effect of normal and common mode voltages. Use standard safety precautions to avoid personal
contact with these voltages.
The symbol indicates a connection terminal to the equipment frame.
The WARNING heading in a manual explains dangers that might result in personal injury or death. Always
read the associated information very carefully before performing the indicated procedure.
The CAUTION heading in a manual explains hazards that could damage the instrument. Such damage
may invalidate the warranty.
Operation
WARNING There can be hazardous voltages exposed in this test fixture and risk
of electric shock. Do not touch internal electrical connections. Remove
all sources of power before opening cover and changing devices.
If this test fixture is used with an instrument capable of sourcing voltages greater than 42V, then the user must provide an additional safety
barrier to prevent the possibility of electrical shock.
No interlock features are provided by this device—properly make all
connections and close the lid before energizing instrumentation connected to this test fixture.
CAUTION The current leakage specifications depend upon a clean fixture. Avoid
contamination that could cause degraded performance and increase
current leakages beyond specified limits.
2
Model 4200-SCS
NOTE It is safe to use the test fixture without an additional safety barrier if the connect-
ed instrument has a Safety Interlock that can disable any high voltage ranges
capable of sourcing greater than 42V, such as the Keithley Model 4200.
To operate and use with the 4200-SCS:
1. Install device (2, 3, or 4 terminal) on the device holder (transistor socket).
2. Note which device pin (from Step 1) is associated with the triax connection (SMU1, SMU2, SMU3,
SMU4). Then for:
• Model 4200 — Connect the appropriate SMU from the Model 4200 directly into each triax connector.
• Other instruments (not Model 2600 series, see below for Model 2600 series) — Adapt the
connections to triax (if needed). Make sure HI is connected to the inner conductor.
3. Close the lid on the test fixture.
WARNING Close cover before applying power to test fixture.
4. Conduct your test.
Model 2600 Series
WARNING The Model 260x does not have a Safety Interlock that can disable any
high voltage ranges capable of sourcing greater than 42V.
Use of the test fixture requires an additional safety barrier that can
disable any high voltage ranges capable of sourcing greater than 42V.
To operate and use with the 2600 Series:
1. Install device on device holder (transistor socket).
2. Refer to Table 1 for the parts required for 2 and 4 channel connections.
3. Use Figure 2 as a guide for the two channel scheme or Figure 3 for the four channel scheme, and
make required connections.
4. Close the test fixture cover.
WARNING Close cover before applying power to test fixture.
5. Conduct your test (refer to the Series 2600 User’s Manual for additional information).
Table 1
Required components using Model 2602
Channels Model Description Qty Reference
Model 2602 Source Measure Instrument* 1
2
8101-4TRX Test Fixture 1
Model 2602 Source Measure Instrument* 2
4
8101-4TRX Test Fixture 1
* Not supplied with Model 8101-4TRX text fixture.
Figure 22600-DEMO-TRX Cable* 2
Figure 32600-DEMO-TRX Cable* 4
3
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