HP 8340B Manual page 29

4-4.
SWEPT FREQUENCY ACCURACY (Cont'd)
Equipment
Spectrum Analyzer
.............................................
HP
8566B
Oscilloscope
...................................................
HP 1741A
Power Supply
.................................................
HP
6294A
Adapters
Type
N
(m)
to
APC 3.5 (f)
..............................
HP P/N 1250-1744
(2 required if DUT is HP 8341 B)
(1 required if DUT
is
HP 8340B)
APC 3.5 (f) to APC
3.5
(f)
................................
HP P/N
5061-5311
(1 required
if DUT
is
HP 8340B)
Cable (Semi-Rigid
SMA
male to
SMA
male)
.................
HP P/N 08340-20124
Diode (2 required)
.......................................
HP P/N 1901-0028
Digital
Voltmeter
..............................................
HP
3456A
1 KOhm Resistor
............................. ..........
HP P/N 0757-0280
Procedure
1.
Connect the equipment
as shown in
Figure
4-4
(with the
power
supply
output set
to
0
Vdc). Allow
the equipment
to
warm
up for
one hour.
2.
Press HP
8340B/41B [INSTR PRESET].
Set the oscilloscope
to
display amplitude
versus sweep
out voltage (A
vs B).
Set channel A
sensitivity to
0.2V/Div.
3.
Set the
spectrum analyzer
REFERENCE LEVEL to 20 dBm. Set CENTER FREQUENCY
to
3.4
GHz
for
20% (4
GHz
for 50%,
or 4.6
GHz for 80%). Set
FREQUENCY SPAN
to
zero. Set RES BW
(resolution bandwidth) to
3
MHz.
4.
Set
HP
8340B/41B
to have
a
sweep out voltage
and at the
same time,
a
phase locked
CW
frequency that is
proportional to
a
percentage
of band as follows:
a.
Press
[START]
and enter
[3]
[GHz]
b.
Press
[STOP]
and enter
[5] [GHz]
c.
Press
[MANUAL] SWEEP
and enter
[3]
[.] [4]
[GHz]
for
20%
(4 GHz for 50%,
or 4.6
GHz
for 80%).
yW¥¥WV¥¥¥^f
|
CAUTION
)
•W>^M»W^t
Do
not adjust the power supply for greater than
±10 Vdc
in
this
pro¬
cedure.
5.
Adjust the
oscilloscope's Channel
B
sensitivity for 0.05
V/DIV
and the horizontal position control
for
midrange. Adjust the power supply voltage for
a
DVM
indication of
0±10
mVdc.
6.
Adjust oscilloscope horizontal position
control to position the dot
on the
center graticule. Adjust
the oscilloscope vertical position to place the dot near the top of the CRT.
NOTE
The oscilloscope
is
now calibrated for 0.5%/Division and for the desired
percentage
of band
(i.e.,
20%, 50%,
or
80%). Measurements can now be
made
at this percentage of band for any Start/Stop frequency and any
frequency
span.
HP 8340B/41B
Performance Tests
4-23