HP 8340B Manual page 61

4-13. PULSE MODULATION ACCURACY TEST (Cont'd)
Equipment
Local Oscillator
Pulse Generator
Amplifier
Oscilloscope
Adapters
APC 3.5 (f) to APC 3.5 (f)
(1 required if DUT is HP 8340B)
Type N (in)
(1 required if DUT is HP HP 8341 B)
Type N
(1
SMA
BNC
Cable (Semi-Rigid SMA male to SMA male)
10 dB Attenuator
Mixer
Low Pass Filter (LPF)
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
1. Connect equipment as shown in Figure 4-16. Connect the mixer directly to the LOs 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
TRANSITION TIME slide switch
AMPLITUDE slide switch
PULSE DOUBLE/NORMAL
PULSE DELAY slide switch
Pulse Delay VERNIER
LEADING EDGE control
PULSE WIDTH slide switch
TRAILING EDGE control
OFFSET
POLARITY
OUTPUT
NT LOAD
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
83418 OUT.
4-64 Performance Tests
to APC 3.5 (f)
to APC 3.5
(in) (in)
required if LO is
HP 8341A/B)
to BNC
(in)
(f)
Tee
(f)
(in) (f)
dBm.
=4
HP 8340A/B Opt. 001 or any HP 8341A/B3
NOTE
HP 8012B
HP 8447F
HP
1741A
HP P/N 5061-5311
HP P/N 1250-1744
HP P/N 1250-1 743
HP P/N 1250-1 200
HP P/N 1250-0781
HP P/N 08340-201 24
HP 8493C Opt. 010
HP P/N 09SS0307
HP P/N 913S-0260
—
lj.t
minimum (Sn)
top position (5.0)
NORMAL
minimum
fully CCW
fully CCW
iOn-i
fully CCW
OFF
+
NORMAL
IN
HP 8340B/41B