5-8
SECTION 5
Using Substrate Bias
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 instru-
ments 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 instru-
ments 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.
Turn on the computer and start Test Script Builder (TSB). 5.
Once the program has started, open a session by connecting
to the master instrument. For details on how to use TSB, see
the Series 2600 Reference Manual.
You can simply copy and paste the code from Appendix A in
this guide into the TSB script editing window (Program 14),
manually enter the code from the appendix, or import the
TSP file ‘BJT_Comm_Emit_Vsb.tsp’ after downloading it to
your PC.
If your computer is currently connected to the Internet, you
can click on this link to begin downloading: http://www.
keithley.com/data?asset=50928.
Install a BJT with substrate connections in appropriate tran-6.
sistor socket of the test fixture. The test is optimized for BJTs
with source requirements similar to a 2N3904.
Now, we must send the code to the instrument. The simplest 7.
method is to right-click in the open script window of TSB,
and select ‘Run as TSP file’. This will compile the code and
place it in the volatile run-time memory of the instrument.
To store the program in non-volatile memory, see the “TSP
Programming Fundamentals” section of the Series 2600 Refer-
ence Manual.
Once the code has been placed in the instrument run-time 8.
memory, we can run it at any time simply by calling the func-
tion ‘BJT_Comm_Emit_Vsb()’. This can be done by typing
the text ‘
FET _ Comm _ Source _ Vsb()
’ after the active
prompt in the Instrument Console line of TSB.
In the program ‘9. BJT_Comm_Emit_Vsb().tsp’, the
function
BJT _ Comm _ Emit _ Vsb(istart,
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