User's Manual

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[RANGE + / - ] key
Press the [+] key to increase the observation range and the [-] key to reduce the observation range.
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[VRM 1 / 2 ] (Variable Range Marker 1 / 2) key
Use this key to set the display of VRM1 / VRM2 to On / Off and acquire the operation right.
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[ENT] (Enter) key
Use this key to confirm menu selection and input of numeric values.
This key is equivalent to the clicking of the left button of the track ball.
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[CLR / INFO] (Clear / information) key
Use this key to cancel menu selection or numeric value input.
This key is equivalent to the clicking of the right button of the track ball.