U3022
B
H10
High Power Measurements
Selecting RCVR A and B Path Attenuators
8. Calculate the amount of attenuation needed so that the optimum PNA-X RCVR A/B
power level of –15 dBm is not exceeded. Refer to your PNA-X specifications to optimize
power levels to the receiver ports.
For example:
+25 dBm
–15 dBm
•
Measured power at the DUT Output
•
The optimum PNA-X receiver power level
•
Loss through the Test Set switch and cables is 3 dB
9. Calculate the amount of attenuation used between the external RCVR OUT and
RCVR A /B IN.
Equation
4 RCVR IN Attenuation Example
10.
Connect the 40 dB attenuators to RCVR OUT.
11.
Connect the RF cable from the DUT Output to the Test Set port that will be receiver port.
12.
Select the trace for the source to receiver path.
For e
xample
,
if port 3 is your receiver and
port 1
is your source, select S31.
13.
Turn On the Booster Amplifier.
14.
Measure the attenuator output power.
15.
Verify that the power measured, in the previous step, is within the acceptable limits (–15
dBm for the RCVR A/B IN).
16.
Connect the attenuator outputs to receiver A IN and B IN. If you are using Ports 13 or 14,
connect the same value attenuators from RCVR OUT to RCVR C/D IN.
– 15
dBm
– 25
dBm
= –40
dBm
U3022BH10 User's and Service Guide
69
