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Models 8672S/88720A
Operation
3-1. INTRODUCTION
This section explains how to operate the Signal
Generator System. Efficient operation of the sys¬
tem requires an understanding of the operation of
both the HP 8672A Synthesized Signal Generator
(Signal Generator) and the HP 86720A Frequency
Extension Unit (FEU).
Because most users require system operating infor¬
mation more often than FEU operating informa¬
tion, the section is organized in the following format:
1. Local Operation.
a)
Turn-on procedure.
b)
Signal Generator System operation.
c)
FEU operation.
2. Remote Operation.
a)
Signal Generator System operation.
b)
FEU operation.
3. Signal Generator System Operator's Checks.
NOTE
The operation of the FEU can best be
checked by operating it in a Signal Gen¬
erator System.
a)
Operator's local check.
b)
Operator's remote check.
4. Operator's Maintenance.
Most Signal Generator functions are covered in
the HP 8672A Operating and Service Manual.
However, the relationship between the Signal
Generator and the FEU when they are used as a
system is explained in this section. For example,
the use of the Signal Generator RANGE dBm dis¬
play and the FEU vernier meter during low band
operation is covered.
Operation of the following Signal Generator func¬
tions are described in the HP 8672A Operating
and Service Manual:
a.
Setting the output frequency.
b.
Setting modulation (except pulse modula¬
tion which is covered in this section).
c.
Setting output level range.
d.
Setting the high band output level vernier.
Setting the low band output level vernier is covered
in this section.
e.
RF On/Off.
f.
The remaining Signal Generator functions.
3-3. Turn-on Procedure
WARNINGS
Before the instruments are switched on,
all protective earth terminals, extension
cords, auto-transformers and devices
connected to them should be connected
to a protective earth grounded socket.
Any interruption of the protective earth
grounding will cause a potential shock
hazard that could result in personal
injury.
Only fuses with the required rated cur¬
rent and specified type should be used.
Do not use repaired fuses or short circu¬
ited fuseholders. To do so could cause a
shock or fire hazard.
\
CAUTIONS
Before the system is switched on, the
instruments must beset to the voltage of
the power source or damage to the sys¬
tem may result.
3-2. LOCAL OPERATION
Included in this section are the descriptions of the
FE U front and rear panel controls, connectors and
indicators, operator's checks, and operator
maintenance.
The FEU .01 TO 18.0 GHz OUTPUT is
protected against reverse power appli-
cations up to 1W. However, for greatest /\
protection of expensive internal compo-
nents, be careful not to apply any reverse
power to the .01 TO 18.0 GHz OUTPUT.
3-1
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