① Print content: Real time data and historical data are optional. When selecting real-time data, press the "Print" button to print directly. When selecting historical data, the following content can be changed.

② Printing method: optional for data reports and historical curves.

③ File Number: Record the number of the file.

④ Start time: The start time of printing the data segment.

⑤ End time: The end time of the printed data segment.

⑥ Print Channel: Select the channel to print.

⑦ Print Interval: Select the time interval between data printing, in units of the set print interval multiplied by the record interval (valid only for data printing).

⑧ Operation buttons:

Press the 'Switch' button to switch to other display screens.

Press the 'Move Up' button to move the cursor upwards, then press the 'Confirm' button to make modifications at the cursor location. Once the modifications are complete, press the 'Confirm' button to confirm and exit.

Press the 'Move Down' button to move the cursor downwards, then press the 'Confirm' button to modify the cursor position. After modification, press the 'Confirm' button to confirm and exit.

Press the 'Print' button to start printing

Press the 'Cancel' button to cancel printing

Schematic diagram of instrument and serial printer connection: