Remote Control
Copyright © Itech Electronic Co., Ltd.
5
acceptable, such as MIN, MAX and DEF. In addition, suffixes for
engineering units can also be sent together with numerical parameters
(including M, k, m or u). If the command accepts only some specific values,
the instrument will automatically round the input parameters to acceptable
values. The following commands require numerical parameters of
frequency value:
[SOURce[1|2]:]FREQuency:CENTer {<Frequency>|MINimum|MAXimum}
⚫
Discrete parameter
⚫
Discrete parameters are used for settings with limited number of
programming values (such as IMMediate, EXTernal or BUS). They can use
short and long format like key words of commands. They may be
expressed in both upper and lower case. The query response always
returns uppercase parameters in short format. The following commands
require discrete parameters in voltage unit:
[SOURce[1|2]:]VOLTage:UNIT {VPP|VRMS|DBM}
⚫
Boolean parameter
⚫
Boolean parameters refer to true or false binary conditions. In case of false
conditions, the instrument will accept "OFF" or "0". In case of true
conditions, the instrument will accept "ON" or "1". In query of Boolean
settings, the instrument will always return "0" or "1". Boolean parameters
are required by the following commands:
DISPlay {OFF|0|ON|1}
⚫
ASCII string parameters
⚫
String parameters may actually include all ASCII character sets. Character
strings must start and end with paired quotation marks; and single
quotation marks or double quotation marks are both allowed. Quotation
mark separators may also act as one part of a string, they can be typed
twice without any character added between them. String parameter is used
in the following command:
DISPlay:TEXT <quoted string>
For example, the following commands display message of "WAITING..."
(without quotation marks) on the front panel of the instrument.
DISP:TEXT "WAITING..."
Single quotation marks may also be used to display the same message.
DISP:TEXT 'WAITING...'
1.5 Remote Operation
There are four types of communication interfaces available:USB,Ethernet,GPIB
and RS232.You can choose any one of them to communicate with a PC.
RS-232 Interface
RS232 interface:use a cable with two COM interface
（
DB9
）
to connect power
meter and PC. It can be activated by menu key on the front panel.All SCPI
commands are available through RS-232 programming.
⚫
RS-232 data format
The RS-232 data is a 10-bit word with one start bit and one stop bit. The
number of start and stop bits is not programmable.
⚫
Baudrate
Available baudrate:4800 9600 19200 38400 57600 115200
⚫
RS-232 connection
The RS-232 serial port can be connected to the serial port of a controller
(i.e., personal computer) using a straight through RS-232 cable terminated
with DB-9 connectiors. Do not use a null modem cable. Table 2
－
2 shows
the pinout for the connector.
If your computer uses a DB-25connector for the RS-232interface, you will
