Huvitz HDR-9000, Service Manual

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(3) Using Ping Test Function
This function is to aid service engineer checking the status of communication between Operation
Panel and other devices such as Refractor Body, chart. Touching the ‘Ping Test’ button on the
display executes the Ping Test function for communication status check.
To end using this function and to return to the menu mode, press the MENU button on the keypad
of Operation Panel or press OK/Cancel button on the display.
[Dialog box - Ping Test]
In this function mode, buttons for setting and executing a ping test are like below.

(Dial Click): selects test option ‘Target’ or ‘Count’.