HP 8340B Manual page 65

4-13.
PULSE MODULATION ACCURACY TEST (Cont'd)
Equipment
Local Oscillator
......................
HP
8340A/B
Opt.
001
or any HP 8341A/B3
Pulse Generator
................................................
HP 8012B
Amplifier
......................................................
HP
8447F
Oscilloscope
...................................................
HP 1741A
Adapters
APC 3.5 (f)
to
APC 3.5 (f)
................................
HP P/N 5061-5311
(1 required
if
OUT
is HP 8340B)
Type
N (m) to APC 3.5 (f)
................................
HP P/N 1250-1744
(1 required
if DUT
is
HP HP 8341 B)
Type
N (m) to APC 3.5 (m)
...............................
HP P/N 1250-1743
(1 required
if
LO
is
HP 8341A/B)
SMA
(m) to
BNC (f)
.............................. ....
HP P/N 1250-1200
BNC Tee (m) (f) (f)
.............................
...
HP P/N 1250-0781
Cable (Semi-Rigid
SMA
male to
SMA
male)
.................
HP
P/N 08340-20124
10 dB Attenuator
........................................
HP 8493C Opt. 010
Mixer
.................................................
HP P/N 0955-0307
Low Pass
Filter
(LPF)
....................................
HP P/N 9135-0260
NOTE
It
is
important that the mixer be connected directly to the LO's RF Output
connector. For best accuracy in this test, the local oscillator drive to the
mixer should be
2:
4
dBm.
1.
Connect equipment as shown
in Figure 4-16.
Connect
the mixer directly to the LO's RF output
connector to obtain the maximum
mixer LO input level.
Connect
the
BNC tee directly to the DUT's
PULSE IN connector. Allow
a one hour warm
up.
2.
Set
up the 8012B Pulse
Generator as follows:
PULSE PERIOD
slide switch
.....................................
1n
-
.1m
TRANSITION TIME
slide switch
................................
minimum (5n)
AMPLITUDE
slide switch
..................................
top position (5.0)
PULSE DOUBLE/NORMAL
.....................................
NORMAL
PULSE DELAY
slide switch
.......................................
minimum
Pulse Delay
VERNIER
...........................................
fully CCW
LEADING EDGE
control
.........................................
fully CCW
PULSE WIDTH
slide switch
.........................................
10n-1p.
TRAILING EDGE
control
..................... ...................
fully CCW
OFFSET
...........................................................
OFF
POLARITY
.............................................. ...........+
OUTPUT
......................................................
NORMAL
INT LOAD
...........................................................
IN
3.
Set both
oscilloscope channels (A
and
B) for 50 Ohm input.
Set the
oscilloscope
to view the pulse
generator output waveform. Adjust
the
8012B
pulse width
VERNIER
for
a
100
nanosecond pulse.
Adjust the pulse period
VERNIER
for
a
10
microsecond period. Adjust the amplitude
VERNIER
for
about
a
3V
pulse amplitude (TTL
level).
3
Usable only with
HP 8341 B OUT
4-64 Performance Tests
HP 8340B/41B