Service Manuals, User Guides, Schematic Diagrams or docs for : Keithley SCS 071321100 (Oct 2014)(CVU-3K-KIT)
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CVU-3K-KIT
Keithley Instruments
28775 Aurora Road
3 kV Bias Tee Kit
Cleveland, Ohio 44139
1-800-935-5595
http://www.keithley.com
Description
The CVU-3K-KIT Bias Tee Kit consists of three bias tees for performing high voltage (up to 3 kV)
capacitance-voltage (C-V) measurements using Series 2600 and 4200 SMUs along with the Model 4210-CVU
Capacitance-Voltage Instrument. Each bias tee combines C-V measurement with DC bias while isolating the
C-V instrument and SMU instrument from each other.
Figure 1: CVU-3K-KIT contents
Parts list
The following table lists the parts that are supplied with the CVU-3K-KIT.
Part number Description Quantity
131936100 SMA (M) to SMB (M) Adapter 6
131936200 SMA (F) to SMB (F) Adapter 4
2600-RBT-200 200 V Bias Tee 2
2650-RBT-3K 3 KV Bias Tee 1
386782100 Remote Bias Tee Mounting Bracket 1
7078-TRX-1 3-Slot Triaxial Cable, 1 ft 2
8020-DP High Voltage Discharge Probe 1
CA-406B 50 M-M SMA Cable, 33 cm 1
CA-568-120 Ground Cable, 120 in. 2
CS-1391 SMA Tee Adapter, F-M-F 2
HV-CA-554-.5 HV Triaxial Cable, .5 m, Male to Male 1
071321100 / October 2014 *P071321100* 1
CVU-3K-KIT
Assembly and dimensions
Figure 2: CVU-3K-KIT dimensions
2 071321100 / October 2014
CVU-3K-KIT
You must connect both of the included CA-568-120 grounding cables to the safety ground studs of
the bias tee mounting bracket. See the following graphic for an example.
Figure 3: Bias tee mounting bracket with CA-568-120 grounding cable connection example
Bias tee theory and overview
The bias tee and device capacitance must be discharged with the included Model 8020-DP
discharge probe. Refer to the Model 8010 High Power Device Test Fixture User's Manual for
discharge instructions.
071321100 / October 2014 3
CVU-3K-KIT
The bias tees in the CVU-3K-KIT are intended for use with the Model 8010 High Power Device Test
Fixture. When not used with the Model 8010, you must connect Model 2657A-PM-200 external
protection modules in series with the 2600-RBT-200 bias tees.
The CVU-3K-KIT bias tees combine C-V measurement with DC bias while isolating the C-V instrument and
SMU instrument from each other.
The CVU-3K-KIT bias tee option has multiple operation modes that optimize the performance for each
measurement type while nearly eliminating measurement configuration changes between DC I-V and C-V
measurements. Additionally, the bias tees are fully guarded and configured for triaxial connections so that the
low current DC measurements may be performed through the bias tee (see the following figure).
Figure 4: 8020-CVU single bias tee block diagram
4 071321100 / October 2014
CVU-3K-KIT
Bias tee modes
Mode Application Block Control AC AC guard DC
diagram voltage1 switch switch switch
state state state
I-V mode Use for best DC low-current I-V mode 0 V (default Open Open Closed
measurement performance. state)
Ideal for any DC measurements
made with the CVU-3K-KIT
installed. DC currents up to 1 A
are permissible in this mode.
Example tests: Idss, Vds-Id
C-V mode Use for C-V measurements with C-V mode -10 V Closed Open Open
a maximum DC bias current of
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