Display; Power Supply - Philips PM2517E Service Manual

1 8
3.2.5.
Display
The output code from the result counter, the output code of the range
counter and the polarity output of
the control logic determine the indication o{ the display The function
indication is determined by the
function code from the functaon.*11"5 6pd lhe range code from the range
counter of the Oo 0059'
Both codes are supplied to the dec oderldriuer OO 0055. The OO 0055
determines that the correct function
indication is lighted.
Power supply
The PM 2517 can be powered by 4 x 1.5 V batteries or exrernal by means of the I v power supply Plvl 9218.
In case of power ON the display is continuously lighted.
In case of power STAND BY, which is only used in the Plvl 2517 E, the display is switched on for 40 sec
w h e n t h e D l S p L A y s w i t c h i s p r e s s e d . W h e n t h e d i s p l a y i s s w i t c h e d o f f t h e P M 2 5 1 7 E i s s t i l l m e a s u r i n g s o t h e
data is immediately available when the display is lighted again.
Fig. 1O.