Technical data

236 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide
10 :CHANnel<n> Commands
:CHANnel<n>:PROTection
(see page 860)
Command Syntax
:CHANnel<n>:PROTection[:CLEar]
<n> ::= 1 to (# analog channels) in NR1 format| 4}
When the analog channel input impedance is set to 50, the input
channels are protected against overvoltage. When an overvoltage condition
is sensed, the input impedance for the channel is automatically changed to
1 M
.
The :CHANnel<n>:PROTection[:CLEar] command is used to clear (reset) the
overload protection. It allows the channel to be used again in 50
 mode
after the signal that caused the overload has been removed from the
channel input.
Reset the analog channel input impedance to 50
 (see
":CHANnel<n>:IMPedance" on page 227) after clearing the overvoltage
protection.
Query Syntax
:CHANnel<n>:PROTection?
The :CHANnel<n>:PROTection query returns the state of the input
protection for CHANnel<n>. If a channel input has experienced an
overload, TRIP (tripped) will be returned; otherwise NORM (normal) is
returned.
Return Format
{NORM | TRIP}<NL>
See Also • "Introduction to :CHANnel<n> Commands" on page 222
• ":CHANnel<n>:COUPling" on page 225
• ":CHANnel<n>:IMPedance" on page 227
• ":CHANnel<n>:PROBe" on page 231