HP 8642A - Page 123

Operation Model 8642A/B
MODULATION
■GJ Q'
;
OEQQ
@00E3
EQ0Q &
CD
0
■^^M ENTRY ^^H^B
□ □
:
no r"-1
::
DCD
□ □
These keys make AM, FM, or $M the active function so
its value can be set using either Data keys, the Knob,
Step keys, or the Off/On key. Also Pulse Modulation
can be turned on or off. You can select either AM or
Pulse Modulation simultaneously with either FM or $M.
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I MODULATION SOURCE I
11
INT E*T AC tXT DC «
The Modulation Source keys select whether an internal
or external source is used (or internal and external
sources combined). The source of the external
modulation is coupled through the input connectors.
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□ □
□ □
MOD OUT
□ □
The key is used to set the modulation frequency for all
internal modulation sources and for the modulation
output. The key is also used to set the modulation
output level for the Mod Output connector.
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□ □□□a
□ □ o □ o-
DDD0Q"
These terminator keys enable you to complete a data entry.
Figure 3-11. Modulation-Related Functions
3-96