Keysight B1500A User’s Guide, Ed ition 14 2- 13
Introduction
Rear View
10. USB interfaces
USB, 2 ports. For keyboard, mouse, or peripherals.
To remove USB devices from the instrument, use “Safely Remove Hardware”
on Windows taskbar. If it is not used, the instrument may cause the internal USB
communication error. If the error occurs, turn the instrument off and disconnect
the power cable from it. Leave it about 30 seconds before rebooting it, and
connect the power cable again, and then turn the instrument on.
11. Ext Trig terminals
Two BNC connectors, one for trigger input, and one for trigger output. For
details about the trigger function, see Programming Guide.
12. Digital I/O terminal
DSUB 25 pin connector. Can be used for the trigger input/output terminals or an
interface to control an external relay circuit and so on. For details, see
Programming Guide. This connector is also used to connect Keysight 16445A
selector adapter.
13. Interlock terminal
Used in conjunction with the interlock function of the instrument. If the
Interlock terminal is open, maximum SMU output is limited to ±42 V. Be sure to
connect this terminal to the interlock circuit of the 16442B test fixture
(B1500A-A5F) or the prober station before performing measurement. For the
interlock circuit, see “To Make an Interlock Circuit” on page 3-31.
To verify the interlock function, perform the Interlock Open/Close test on the
Main Frame tab screen of the EasyEXPERT Configuration window.
WARNING Dangerous voltage, instrument maximum output voltage may appear at Force,
Guard, and Sense terminals if the Interlock terminal is closed.
14. Video output terminal
VGA connector. For an external display. Signal to the built-in LCD is also
applied to this terminal.
For the B1500A manufactured before the video output terminal is supported, it
is mounted on the position “14a” by upgrading the mainframe.
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