advantest corporation TR5821 - Description of Panels

3-2. Description of Panels
3-2-1. TR5821/5822 Panels ( To see Figure 3-2.)
(T) Power
The mainframe is not powered when the POWER switch is set to STBY,
but the reference oscillator is activated in this state if the power cable
plug is connected to a power receptacle. The mainframe is powered
when the POWER switch is set to jl ON.
© FUNCTION
Every time (5) is pressed, the lamp indication changes CHECK -> FREQ.
-* PERIOD -*■ T.l. -*■ RATIO cyclically, and the function indicated
by the lighted lamp is selected; (o] key operation shifts the lamp indica
tion in the opposite direction. When TOT is selected, the gate opens/
closes each time (g) is pressed. For other functions, the @ switch
operates as a RESET switch. (See (^T) for RESET.)
(3) GATE
Monitor lamp for counting operation. The lamp is on during counting
(measurement).
When counting operation is done at high speed, the MONITOR
lamp lights at short time intervals and seems to disappear.
© OVER
This lamp goes on when the measurement result exceeds the counting
capacity.
© Numerical display section
Green, 7-segment LED display of 8 digits.
(§) Unit display section
Displays the unit of the measurement result.
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