Agilent Technologies InfiniiVision 7000A Series, Programmer'S Manual

Page: 171 / 922

Commands by Subsystem
5
Agilent InfiniiVision 7000A Series Oscilloscopes Programmer's Guide 171
:OVLRegister (Overload Event Register)
(see page 786 )
Query Syntax
:OVLRegister?
The :OVLRegister query returns the overload protection value stored in the
Overload Event Register (OVLR). If an overvoltage is sensed on a 50
Ω
input, the input will automatically switch to 1 M
Ω
input impedance. A "1"
indicates an overload has occurred.
N O T E
You can set analog channel input impedance to 50
Ω
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
Ω
.
9 8 10 11 12 13 14 15
To OVLR bit in
O pe ra ti o n Status
Register
+
OR
1 0 2 3 4 5 6 7
:OVLR?
Overload Event Register
:OVL
:OVL?
Overload Event Enable
(Mask) Register
Chan2
OVL
Chan1
OVL
Chan3
OVL
Chan4
OVL
Ext Trig
OVL
Chan2
Fault
Chan1
Fault
Chan3
Fault
Chan4
Fault
Ext Trig
Fault
Table 55 Overload Event Register (OVLR)
Bit Description When Set (1 = High = True), Indicates:
15-11 --- (Not used.)
10 External Trigger Fault Fault has occurred on External Trigger input.
9 Channel 4 Fault Fault has occurred on Channel 4 input.
8 Channel 3 Fault Fault has occurred on Channel 3 input.
7 Channel 2 Fault Fault has occurred on Channel 2 input.
6 Channel 1 Fault Fault has occurred on Channel 1 input.
5 --- (Not used.)