Power Sweep Test - HP 8340B Manual

4-10. POWER SWEEP TEST

Specification
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 —9.9S dBm (see Figure 3 in the HP
specification table), and so the maximum power sweep range is the difference of —9.95
8340B/41B
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.
APC—3.
to APC—3.5(t)
(834GB ONLY)
HP 8340B/41B
Table 4-23. Power Sweep Test Specifications
HP 8340B/41B
UNDER TEST
ADAPTER ADAPTER
5(1) APC—3.5(f)
to N(m)
(8341B ONLY)
Figure 4-10. Power Sweep Test Setup
POWER METER
OUTPUT
POWER
SENSOR
Performance Tests 4-53