Agilent E8462A Relay Multiplexer Command Reference
99
[ROUTe:]SCAN:MODE?
[ROUTe:]SCAN:MODE?
Returns the current state of the scan mode. The command
returns
NONE
,
VOLT
,
RES
, or
FRES
if the scan mode is in the none, volts, two-wire
ohms, or four-wire ohms measurement mode, respectively.
Example
Query the Scanning Mode
This example selects the four-wire ohms measurement mode (
FRES
) on card #1 of
a single-module switchbox, then queries the measurement state. Because four-wire
ohms mode is selected, the query command returns "FRES".
SCAN:MODE FRES
Selects the four-wire ohms scanning
mode.
SCAN:MODE?
Query the scanning mode.
[ROUTe:]SCAN:PORT
[ROUTe:]SCAN:PORT <
port
>
Enables or disables the closing of the analog bus
connection control relays 9200 through 9204 during scanning.
SCAN:PORT ABUS
closes the appropriate control relay for analog bus connections. The
ROUTe:SCAN:PORT NONE
command prevents closing the control relays.
Parameters
Comments
Order of Command Execution:
Measurement modes are selected by the
[ROUTe:]FUNCtion
and
[ROUTe:]SCAN:MODE
commands. Then followed by
the
[ROUTe:]SCAN:PORT
and
[ROUTe:]SCAN
<
channel_list
>
commands.
Analog Bus Connection:
The
SCAN:PORT ABUS
command only
connects/disconnects the analog bus during scans. To connect/
disconnect the analog bus when not scanning channels, it is necessary
to switch the appropriate control relays (9200 through 9204). Refer to
[ROUTe:]CLOSe
or
[ROUTe:]OPEN
for more information.
[ROUTe:]SCAN:PORT
versus
[ROUTe:]FUNCtion
:
With FUNC set to
WIRE1X2, WIRE1X4, WIRE1X8, WIRE2X2, WIRE2X4, WIRE2X8, WIRE4X2
or WIRE4X4, only the lowest MUX can be connected to the Analog Bus.
FUNC NONE will not connect to the Analog Bus.
[ROUTe:]SCAN:PORT ABUS
with 1-Wire Functions:
With FUNC set to
WIRE1, WIRE1X2, WIRE1X4 or WIRE1X8 and SCAN:PORT set to ABUS,
analog bus relays 9200 and 9202 will close and control relays 9201, 9203 and 9204
will open. This connects Analog Low of the Multimeter to Analog Guard (Common)
of the Multimeter and Analog Hi of Multimeter to the MUX switches. It also
connects Analog Low of the mulitmeter to Ter2 to provide a connection to the user
common ground.
Parameter
Name
Parameter
Type
Range of Values
Default
Value
port
discrete
ABUS|NONE
NONE
Содержание E8462A
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Страница 10: ...8 Notes...
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Страница 15: ...Configuring the Agilent E8462A Multiplexer 13 Figure 1 1 Agilent E8462A Simplified Schematic...
Страница 68: ...66 Using the Multiplexer...
Страница 104: ...102 Agilent E8462A Relay Multiplexer Command Reference...
Страница 118: ...116 Agilent E8462A Relay Multiplexer Command Reference...
Страница 126: ...124 Agilent E8462A Scanning Voltmeter Application Examples Chapter 4 Notes...
Страница 146: ...144 Register Based Programming...
Страница 156: ...154 Index...