HP 8340B Manual page 64

4-13.
PULSE MODULATION ACCURACY TEST
NOTE
THIS TEST
IS
NOT APPLICABLE TO INSTRUMENTS EQUIPPED WITH
OPTION 006, DELETE PULSE MODULATION.
Specification
Table 4-26.
Pulse Modulation Accuracy Test Specifications
For
CW mode
and frequencies
>400
MHz only:
Minimum Internally Leveled RF Pulse Width (Tl, RFI): 100
nanoseconds
Pulse Repetition Frequency:
Internally leveled: 100 Hz to 5
MHz
Accuracy of Internally Leveled RF Pulse
VI,
PI
(relative to
CW mode level):
NOTE
ALC attempts to hold pulse amplitude to same level as leveled CW signal.
Bands and Approximate Frequency Ranges
(GHz)
(see Frequency Ranges and Bandswitch Points for complete description)
Pulse Width
100 to
<200ns
200
to
<500
ns
s.500
ns
BandO
0.4 to
<2.3
+3/-0.3dB2
+1.5/-0.3dB2
±0.3dB
Bands 1
•
4i
2.3 to 26.5
+1.5/-0.3dB2
±0-3dB
±0-3dB
1
Band
4 (>20 0 to 26 5 GHz) only applies
to
the HP 8340B
2 +15
to +55-C- Duty Cycle must be >0
01%
Description
The DUT's RF output
frequency
is
down converted to 50
MHz using
a
mixer and
a
local oscillator.
The
50 MHz
IF
signal is
amplified and applied
to an
oscilloscope. The DUT
is
pulsed using
a
pulse
generator. The
IF
modulation envelope
is
positioned to convenient horizontal graticule
lines.
The
pulse
is
turned
OFF
and the
DUT's output power
level
is
adjusted so that the IF
carrier is
at the
horizontal graticule
lines
established when
the
DUT was
being pulsed. The change
in
DUT
output
power
level is the accuracy error
of
the leveled RF pulse.
HP 8340B/41B
Performance Tests