Service Manuals, User Guides, Schematic Diagrams or docs for : Keithley SCS 071321200 (Oct 2014)(CVU-200-KIT)
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CVU-200-KIT
Keithley Instruments
28775 Aurora Road
200 V Bias Tee Kit
Cleveland, Ohio 44139
1-800-935-5595
http://www.keithley.com
Description
The CVU-200-KIT Bias Tee Kit consists of three 2600-RBT-200 bias tees for performing capacitance-voltage
(C-V) measurements using Series 2600 (excluding the Model 2657A), 4200 SMUs, and the Model 4210-CVU
Capacitance-Voltage Instrument. Each bias tee combines C-V measurement with DC bias, isolating the C-V
instrument and SMU instrument from each other.
The CVU-200-KIT bias tee kit can be used to provide C-V measurements at up to 200 V DC bias or 400 V
differential bias between two device terminals.
Figure 1: CVU-200-KIT contents
Parts list
The following table lists the parts that are supplied with the CVU-200-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 3
386782100 Remote Bias Tee Mounting Bracket 1
7078-TRX-1 3-Slot Triaxial Cable, 1 ft 3
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
071321200 / October 2014 *P071321200A* 1
CVU-200-KIT
Assembly and dimensions
Figure 2: CVU-200-KIT assembly and dimensions
2 071321200 / October 2014
CVU-200-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
Bias tee theory and overview
The capacitance of the bias tees in the Model CVU-200-KIT can hold charge. Devices with
sufficient capacitance can also hold charge. A shock hazard exists if a proper discharge is
not performed and you touch one of the device terminals.
071321200 / October 2014 3
CVU-200-KIT
The CVU-200-KIT bias tees combine C-V measurement with DC bias while isolating the C-V instrument and
SMU instrument from each other.
The 8020-CVU 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 071321200 / October 2014
CVU-200-KIT
Bias tee modes
Mode Application Block Control AC AC guard DC switch
diagram voltage1 switch switch state
state state
I-V mode Use for best DC low-current I-V mode 0V Open Open Closed
measurement performance. (default
Ideal for any DC measurements state)
made with the 8020-CVU
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 -10 V Closed Open Open
a maximum DC bias current of mode
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