Wavetek 3000 - OPTION 7 LOW LEAKAGE; Introduction to Option 7; Circuit Description for Option 7; Option 7 Specifications

INTRODUCTION
Option 7 provides for a reduction in
RF leakage such that
less than 0 .1 pV is .induced in a
two-turn, one inch diameter
loop (feeding a 5012
receiver) held one inch away from any
surface, when the
instrument is developing 30 mVRMS or
less into a 50 Q
termination .
An alternate method
of detection is to place a paging
receiver with .2 pV
sensitivity (such as Motorola A04FNC
in a
TEK-69 fixture connected to the instrument
RF OUT
connector)
6 inches in front of the instrument
with the
instrument
OUTPUT STEP ATTENUATOR set
at
minimum and the instrument frequency
set
to
that of
the paging receiver .
The paging receiver IF test
point is monitored with an AC
voltmeter, and should
change less than 0 .5 dB .
OPERATION
There is no change
in operation from the standard
instrument .
CIRCUIT DESCRIPTION
For
Option 7, the standard M9W Sweep Oscillator
is
replaced with an M9W-2 . The operation of
the
M9W-2
is
identical
to the M9W ; the difference
is
additional
shielding
and
filtering in the M9W-2 . Also, additional
shielding,
filtering for
the PROGRAMMING jack inputs, filtering
for
the LEVEL
PROGRAM jack inputs (for Option
1A), and
an
AC line filter are added to the rear panel
of the
instrument .
MAINTENANCE
NOTE
OPTION 7
LOW LEAKAGE
If Option 4, Auxilliary
RF Output, is also installed, the
Sweep Oscillator
is an M9W-3 .
No
calibration or maintenance should be required for
this
option other than that described in previous sections
of
this
manual .