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A.5.
Controls AMPLITUDE IN 50 2
Using switch AMPLITUDE in 50 Q, S4, positive or negative polarity of the output
pulse can be obtained. The output amplitude can also be set to + 1 or
£3 V.
The vernier, RV5, provides overlap between the amplitude ranges. Hence, the
amplitude can be continuously adjusted from approximately 0.3 V (vernier fully
counter-clockwise) to the maximum 3 V (vernier fully clockwise).
A.6. Switch NORM. INV.
The output pulse can be inverted by depressing push-button NORM. INV. In the
NORMAL mode the duty cycle is limited to 80 — 85 %o. It can be increased to
almost 100 %o in the INVERTED mode, only limited by the minimum pulse width.
The simplified pulse diagram Figure VI-5 illustrates the different modes.
SETTINGS
OUTPUT
PULSE
S 4(S9)
$8(S10}
AMPLITUDE
IN 50.9
|NORMAL / INV.
NORMAL
co 3¥
NORMAL ©
i
HMA6L34
Fig. VI-5. Interaction of positive-going and negative-going pulses at normal and
inverted pulse operation
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