ā41
3. Internal power supply performance:
The unregulated output is about 24V, please confirm before use.
The maximum transient output current of the internal power shall not be larger than 0.5A and the
current of long working hours shall be less than 0.2A. Self- contained power is necessary if larger
current is needed.
If the external control signal needs to be larger than 2A or 220V, the internal relay of the instrument
can not bear it. Please transfer it by yourself.
4.7 Other interface and function
1. USB DEV on the front panel is used for connecting the U-disk, exporting and importing the setting
files and upgrading the software.
2. USB HOST on the rear panel is used for the communication with the computer. There are two
working modes.
a) USBTMC: standard USB slave mode. Compatible software format IEE488.
b) USBVCOM: USB simulated serial port, data format: 8.n.1. Compatible software format IEE485.
3. RS232 is used for the communication with the computer. See the baud rate in SYSTEM SETUP,
data format: 8.n.1. Compatible software format IEE485.
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