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TABLE 3-4 SCPI COMMANDS AND QUERIES
Keyword
Default
Description
Value
SySTem
-
Starts System command branch.
:COMMunicate
-
Identifies communication subsystem commands
:GPIB
-
Controls GPIB (IEEE 488) port settings
ADDRess(1)
04
Sets GPIB primary address. Values = 0 to 30 for Single
mode, 0-29 for Dual mode and 1 to 30 for Secondary
addressing.
Provide 70 ms delay after an address
change before next command
Note - The GPIB ad-
dress and the serial address are the same parameter.
Changing either one, changes both settings.
:ADDRess?
Returns 0 - 30 for 4809A’s primary address.
:EXTernal
OFF
On enables the 4809A’s external address switch inputs to
be used to input a switch setting for the GPIB address.
Off uses the value saved in E
2
ROM memory. Does
not apply to the 4899A. Values = 0|1 or OFF|ON.
:SERial
Controls Serial Interface settings
:BAUD
9600
Sets serial baud rate. Vallues for the 4809A are 300
to 38400 baud. Values for the 4899A and 4819A are
300 to 115200 baud.
:PARity
NONE
Sets serial parity. Values = EVEN, ODD or NONE.
:BITS
8
Sets number of data bits per character. Values = 7 |
8.
:SBITs
1
Sets minimum number of stop bits between characters.
Value = 1 | 2.
:UPDATe
-
Sets UART with new serial values. User must re-
program the serial controller’s COM port after this
command.
RS485
OFF
Tristates 4899A and 4809A transmitter when not
transmitting for two wire networks. Values are ON
and OFF.
Содержание 4809A
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