With Substrate Bias - Keithley Series 2600 Application Manual

Program 14. Common-emitter Characteristics with Substrate Bias
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BJT_Comm_Emit_Vsb(): USES TABLES
This program applies a bias to the base of a BJT (IB), a bias to the substrate (VSB), and
sweeps voltage on the collector/emitter (VCE).
The VCE, IB, and IC are then printed.
Required equipment:
(1) Dual-channel Keithley Series 2600 System SourceMeter instrument
(1) Keithley Model 2636 System Sourcemeter instrument (Required for low current
measurement)
(1) Crossover Ethernet Cable
(1) 2N5089 NPN Transistor or equivalent with substrate bias
- Connect the single-channel SourceMeter instrument to the dual-channel master using a
crossover Ethernet cable.
- Connect the test fixture to both units using appropriate cables.
- Turn on the SourceMeter instruments and allow the unit to warm up for two hours for
rated accuracy.
Configure the TSP-Link communications for each instrument:
Slave: A single-channel instrument such as the Model 2601, 2611, or 2635.
1. Press the MENU key to access MAIN MENU.
2. Select the COMMUNICATION menu. (Skip this step if the Series 2600 instruments
used have firmware Revision 1.4.0 or later installed.)
3. Select the TSPLINK_CFG menu. (If the Series 2600 instruments used have firmware
Revision 1.4.0 or later installed, the menu name should be TSPLINK.)
4. Select the NODE menu.
5. Set the NODE number to 2 and press ENTER.
Master: A dual-channel instrument such as the Model 2602, 2612, or 2636.
1. Press the MENU key to access MAIN MENU.
2. Select the COMMUNICATION menu. (Skip this step if the Series 2600 instruments
used have firmware Revision 1.4.0 or later installed.)
3. Select the TSPLINK_CFG menu. (If the Series 2600 instruments used have firmware
Revision 1.4.0 or later installed, the menu name should be TSPLINK.)
4. Select the NODE menu.
5. Set the NODE number to 1 for the Master and press ENTER.
6. Select the TSPLINK_CFG menu. (If the Series 2600 instruments used have firmware
Revision 1.4.0 or later installed, the menu name should be TSPLINK.)
7. Select the RESET to initialize the TSP-Link.
Running this script creates functions that can be used to measure the common emitter
characteristics of transistors. The default values are for an NPN transistor type 2N5089.
APPenDIx A
Scripts
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