IT7300User Manual
User Manual
44
RS-232 Troubleshooting:
In case of connection failure of RS232, perform following check:
Check if the computer and power supply are provided with same Baud rate, parity check bit,
data bit and flow control. The power supply shall be configured with one start bit (fixed) and
one or two stop bits.
Just as described in the RS232 connector, appropriate interface cable or adapter shall be
adopted. Notes: even if the cable is equipped with right plug, internal wiring may be
incorrect.
The interface cable must be connected to the right serial port (COM1 and COM2) of the
computer.
Communication Settings
Before communication, you should first make the following parameters of power supply and
PC matches.
Baud Rate: 9600 (4800,9600,19200,38400,57600,115200). You can enter the system menu
from the front panel, and then set the baud rate.
Data bits: 8
Stop Bits: 1
Calibration (none, even, odd)
EVEN 8 data bits, have even parity
ODD 8 data bits have odd parity
NONE 8 data bits, no parity
Local Address: (0 ~ 31, the factory default setting is 0)
Parity=None Start Bit 8 Data Bits Stop Bit
6.2 USB interface
Connect the power supply and the computer using a cable with two USB interfaces (each
end). All functions of power supply may be programmed through USB.
The functions of USB488 interface are as follows
488.2 USB488 Interface.
Receive requests of REN_CONTROL, GO_TO_LOCAL and LOCAL_LOCKOUT.
Receive the command MsgID=TRIGGER USBTMC and convey the TRIGGER
command to the functional layer.
The functions of USB488 component are as follows:
1. Able to read all compulsory SCPI commands.
2. SR1 enabled.
3. RL1 enabled.
DT1 enabled.
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