1-7
1
1.6
PROGRAMMABLE FUNCTIONS
All units use IEEE 488.2 and SCPI commands to change their program-
mable functions and jumpers to select the serial signals. Table 1-1 lists
the programmable functions and their factory default settings. The 4899A
and 4809A are factory set for RS-232 signals. The 4829A is factory set
for 4-wire operation.
TABLE 1-1 FACTORy CONFIGURATION
Command
Functions
Factory
Setting
:ADDRess
Sets GPIB bus address
4
:EXT
Enables External GPIB Address Switch
OFF (4809A only) #
:BAUD
Sets transmit/receive baud rate
9600 #
:PARity
Sets parity type
NONE #
:CHECK
Enables parity checking
OFF #
:BITs
Sets number of data bits per character
8 #
:SBITs
Sets number of stop bits/per character
1 #
:RS485
Tristate transmitter enabled
OFF #
:FORMat
Sets talk format for response data
ASCii #
*ESE
Enables Standard Event Status Register bits
0
*SRE
Enables Status Byte Register bits
0
Notes: # indicates a parameter that can be blocked by the LOCK command
Содержание 4809A
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