HP 8340B Manual page 55

4-10.
POWER SWEEP TEST
Specification
Table 4-23.
Power Sweep Test Specifications
Power Sweep
Range
Displayed: 0
to
40 dB/sweep
Actual:
At least
10
dB
at any given
frequency (at least 20 dB
in
DECOUPLED
mode);
see Figure
2 in the HP 8340B/41B
specification table.
Accuracy
Starting Power Level:
Same as Output Power Accuracy
Power Sweep
Width and Linearity: See Figure
2
in
the HP 8340B/41B specification table.
In normal operation (a), the
ALC does
not operate below —9.95
dBm
(see Figure
3 in
the
HP
8340B/41B
specification table), and so the maximum power
sweep range
is the difference of —9.95
dBm and the maximum leveled power available
at the frequency range of Interest (specified leveled
power shown in diagram). In
the DECOUPLED mode
(b), the
power sweep range
is extended because
the ALC can operate down
to —20 dBm.
Description
The DUT
is
set to allow the ALC and the step attenuator
to be
operated independently
([SHIFT] [PWR
SWP]). The DUT
is
then set to do
a
20 dB power
sweep
from —20 dBm to 0
dBm at
a
CW frequency.
The DUT
is
set to do
a
manual sweep while its
output power is measured at the two end points, —20
dBm and
0
dBm,
using
a power meter.
HP 8340B/41B
UNDER TEST
POWER METER
ADAPTER
APC-3.5(f)
to
N(m)
(6341B ONLY)
POWER
SENSOR
OUTPUT
TEST
A
CAL
1
---—^•..——^
Figure 4-10.
Power Sweep Test Setup
HP 8340B/41B
Performance Tests