Location And Description Of Controls And Indicators - HP 652A Operating And Service Manual

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FREQUENCY D ial : Vari e s output frequency w i t h i n
each frequency range. D ial reading multipl ied by range
s ett i n g is the output frequency of the in strument.
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FREQUENCY RAN GE Switch (Sl ): Select s one of six
frequency range s. from 1 0 Hz to
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Output Mon itor (M I): Mon itor s the ampl itude of the
te st o sc i l lator output. May be u s ed to s et and ma inta in
an
output ampl itude reference, when the MONITOR
s w i t ch is in the EXPAND po si t ion.
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Mechan ical Zero Adjust : Allow s output mon i t or to be
mechan i c ally zeroed, when in strument is off.
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OUTPUT ATTENUATOR: Attenuate s
output i n n ine step s of 10 dB each.
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Output Connector s ( 12 and
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Signal, at impedance leve l s of 50 ohms and 600 ohm s.
AMPLITUDE Coar se and VERNIER Controls: Control s
ampl it ude o f Signal
ATTENUATOR.
3-2
Sf'.dion lIT
I MHz.
te st o sc illator
B):
Provide s the output
a ppl ie d to OUTPUT
Figure 3-1. Location and Description of Controls and Indicators
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MONITOR Switch (S4): Expand s top 10% of mon i t or
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scale, to allow an ampl itude reference to be set .
REF SET Coarse and VERNIER Controls: Adju st s
mon itor to de si r ed reference sett i n g.
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FREQUENCY VERNIER : Pro vide s a fi n e frequency
adju stment for FREQUENCY d ial.
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LINE ON Sw itch (S3) and P i l ot Lamp : S w itch appl ie s
pr imary power to in strument; p i l ot lamp glo w s to
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ind icate appl ication of pr imary power.
INDICATOR LIGHT: Glows when power sw i t ch is set
@
to "L1NE".
1 1 5/230 V Slide Switch (S5) : Set s in strument to
operate from a pr i m ary power source of e i t her 1 1 5 Vac
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or 230 Vae.
FUSE ( F I ) : 0.4 amp fu se protect s in strument from
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overload s.
Pr imary Power Connector (J I ) : Connect s pr imary
power to te st o s c illator.
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IDENTIFICATION P LATE: Show s in strument ser i a l
number.
17
POWER TRANSFORMER (TI ) .
Model 652A