Technical data

Root (:) Commands 6
Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide 175
:OVLenable (Overload Event Enable Register)
(see page 860)
Command Syntax
:OVLenable <enable_mask>
<enable_mask> ::= 16-bit integer
The overload enable mask is an integer representing an input as described
in the following table.
The :OVLenable command sets the mask in the Overload Event Enable
Register and enables the reporting of the Overload Event Register. If an
overvoltage is sensed on a 50
 input, the input will automatically switch
to 1 M
 input impedance. If enabled, such an event will set bit 11 in the
Operation Status Register.
NOTE
You can set analog channel input impedance to 50 on the 300 MHz, 500 MHz, and 1 GHz
bandwidth oscilloscope models. On these same bandwidth models, if there are only two
analog channels, you can also set external trigger input impedance to 50
.
Table 65 Overload Event Enable Register (OVL)
Bit Description When Set (1 = High = True), Enables:
15-10 --- (Not used.)
9 Channel 4 Fault Event when fault occurs on Channel 4 input.
8 Channel 3 Fault Event when fault occurs on Channel 3 input.
7 Channel 2 Fault Event when fault occurs on Channel 2 input.
6 Channel 1 Fault Event when fault occurs on Channel 1 input.
5-4 --- (Not used.)
3 Channel 4 OVL Event when overload occurs on Channel 4 input.
2 Channel 3 OVL Event when overload occurs on Channel 3 input.
98101112131415
To OVLR bit in
Operation Status
Register
+
OR
10234567
:OVLR?
Overload Event Register
:OVL
:OVL?
Overload Event Enable
(Mask) Register
Ch a n 2
OVL
Ch a n 1
OVL
Ch a n 3
OVL
Ch a n 4
OVL
Ch a n 2
Fault
Ch a n 1
Fault
Ch a n 3
Fault
Ch a n 4
Fault