Table of Contents
Advertisement
3 Using the Source Functions
Configuring Protection Functions
72
Protection functions are configured in the Protection Configuration
window. Press the Settings key to access the Source Settings window.
Navigate to and select Protection. Then press Enter.
Over Voltage Protection - Over-voltage protection disables the
output if the output voltage reaches the OVP level. To set the over-
voltage protection, enter an over-voltage value in the +
For Agilent Models N678xA SMU, the OVP circuit senses at the 4-wire
sense terminals rather than at the output terminals. This allows for
more precise over-voltage monitoring directly at the load. Refer to
"Over-Voltage Protection Considerations" in chapter 2 for a
description of the OVP function. These models also have negative
voltage protection, which disables the output if negative voltages are
detected. Note that for Agilent Model N6784A, you can program a
negative over-voltage protection level. Enter the value in the -
field.
For Agilent Models N6783A, you can specify a delay to prevent
momentary over-voltage excursions from tripping the over-voltage
protection. Enter the value in the over-voltage Delay field. These
models also have negative voltage protection, which disables the
output if negative voltages are detected.
Over Current Protection - With over-current protection enabled, the
DC Power Analyzer disables the output if the output current reaches
the current limit setting, which causes a transition from CV to CC
mode. To enable over-current protection, check the Enable OCP box.
Note that you can also specify a Delay to prevent momentary CV-to-
CC status changes from tripping the over-current protection. The
delay can be programmed from 0 to 0.255 seconds. You can specify if
the Start of the delay is initiated by any transition into CC mode, or
only at the end of a settings change in voltage, current, or output
state. See chapter 6 under "CC Mode Delay" for more information.
All Outputs – the Status field shows the status of all outputs. This
indicator also appears in the lower left corner of each output in
Meter View. When a protection function trips the DC Power Analyzer
disables the affected output and the status indicator shows which
protection function was activated.
OV
An over-voltage protection.
A negative voltage protection. Only applies to Agilent N678xA SMU and
OV−
N6783A.
field.
Level
Level
Model N6705 User's Guide
Advertisement
Table of Contents
