Publicité
Les langues disponibles
Les langues disponibles
4 Operating the Power System
Using the Protection Functions
Set the Over-Voltage Protection
Set the Over-Current Protection
Couple Output Protection
Set the Over-Power Protection
Query the Over-Temperature Margin
Set the Oscillation Protection
Watchdog Timer Protection
Clear Output Protection
Protection Functions
Each output has independent protection functions. A front panel status indicator will turn on when a
protection function has been set. Protection functions are latching, which means that they must be
cleared once they have been set. As explained under
instrument so that when a protection fault occurs on one output, ALL outputs will be turned off. Of the
following protection functions, only OV, OV-, OC, OSC, PROT, and INH are user- programmable.
OV - Over-voltage protection is a hardware OVP whose trip level is a programmable value. The OVP is
always enabled.
OV− - Negative voltage protection is a hardware OVP. Applies to Keysight N6783A/84A, and N679xA.
OC - Over-current protection is a programmable function that can be enabled or disabled. When
enabled, the output will be disabled when the output current teaches the current limit setting.
OT - Over-temperature protection monitors the temperature of each output and shuts down the
output if any temperature exceeds the maximum factory-defined limits (see
OUTPut:PROTection:TEMPerature:MARGin? in the Operating and Service Guide document).
OSC - Oscillation protection shuts down the output if an oscillation is detected on the output. Applies
to Keysight N678xA SMU.
PF - PF indicates that a power fail condition on the AC mains has disabled the output.
CP+ - CP+ indicates that a positive power limit condition has disabled the output. This protection
function does not apply to all power modules. Refer to
CP− - CP− indicates that a negative power limit condition has disabled the output. This protection
function does not apply to all power modules. Refer to
PROT - Prot indicates that the output is disabled, either because of a coupled protection signal from
another output, or because the programmed watchdog time has expired.
INH - The Inhibit input (pin 3) on the rear panel digital connector can be programmed to act as an
external shutdown signal. Refer to
152
Couple Output Protection
Power Limit Operation
Power Limit Operation
Inhibit Input
for further information.
you can configure the
for further information.
for further information.
Keysight N6700C Series User's Guide
Publicité
