Philips PM3320 Operating Manual page 32

4-12E
4.2.5. VERTICAL SECTION AND MENU STRUCTURE
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Figure 4.8. Front panel view.
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This UP/DOWN control permits selection of the vertical deflection
coefficients of the relevant channe! in 10 steps from 5 mV/div...5
V/div in a 1-2-5 sequence.
The selected vertical deflection coefficient for the relevant channel is
displayed in the top text area of the C.R.T. screen.
If the left side of the UP/ DOWN control (V) is pushed, the amplitude of
the signal on the screen decreases. This means that the AMPL/DIV
value becomes bigger (e.g. the attenuator jumps from 2 V/div to 5
Vidiv).
If the right side of the UP/DOWN contro! (mV) is pushed, the
amplitude of the signal on the screen increases. This means that the
AMPL/DIV value becomes smaller (e.g. the attenuator jumps for 5
Vidiv to 2 V/div)
Continuously variable control of the deflection coefficients of the
relevant channel. The deflection coefficients of the relevant channel
are only calibrated when this control is set fully clockwise (UNCAL
LED is off). In the UNCAL position, the vertical sensitivity decreases.
The complete sensitivity range between two AMPL/DIV settings is
adjustable.
The adjusting speed increases after turning continuously in one
direction. After stopping, starting in the reverse direction resumes
with a slow adjusting speed.
Pilot lamp indicating lower accuracy for the relevant vertical de-
flection coefficients.
If the VARIABLE control of the relevant channel is turned fully
clockwise, the UNCAL piiot lamp is switched off.