HP 3336A - Page 140

Adjustments
Model
3336A/B/C
5-6
g.
Switch
the
8552B
to
manual
scan
mode
and
adjust
the
manual
scan
until
the
beam
is
on
the
spur.
©
h. Switch the 141T to non-storage
i. Adjust A21R107 to minimize the spur.
j.
Return
the
analyzer
to
storage
and
internal
sweep
modes
to
make
certain
that
the
beam
was centered
on
the
spur.
k.
It
will
not
be
possible
to
get
the
spur
down
into
the
noise
floor,
but
it
should
be
possible
to
get
it
down
in the
area of
—60 dBm.
5-17 Multiplier Input and Output Offset Adjustment.
5-18 This procedure optimizes the balance of the voltage multiplier IC (A3U11).
Required Equipment:
oscilloscope -hp- Model 1740A
function generator -hp- Model 3312A
50 ohm feedthru termination -hp- Model 11048C
a. Set the -hp- 3312A as follows:
Ranges: ccos-Aoen caw ead Sun tke os 1 kHz
Didlvaca evenness oh icct eee 1 &
OPTSEE 226). 22 taed Shin ed heels Cal
Amplitudes :e006 eid uw bole sad ka x10
Ampl Vernier ............... 0000005 Center
SYM oh seitioeik oe vase Oe ea ora en Cal
PUNCHON 2o:22 ene edn tea ante sake eds Square Wave
b. Set the -hp- 1740A as follows:
Channel ........ 00... 0c. cece eee A
VOItS/ DIV visciccs- cera see esac BS 0.05V
Main Trig: cegieh tint tis xeseds fon Ext
Titme/ Div hi. 3:i-2 cee sa rhe s eed ceenicos 0.2msec
DG ses Rosina Siecle iva Lean eee eee Coupled
c. Set the -hp- 3336A/B/C as follows:
Frequency ......... cc cee cece ee ecees 10 kHz
Amplitude ste4¢¢.eu sito c seein cies 7.00 dB
d. Connect +5Vdc to the rear panel AMPTD MOD input on the 3336.
e. Remove cable W23 on the A3 assembly.
f. Connect the 3312A 50 ohm output to J23.