Evaluating Transmission Characteristics of a Front End Module
Step 3. Select the test ports assigned to ports 1 to 4 for channel 1.
Setting Description
Assign test port A to port 1.
Assign test port T1 to port 2.
Assign test port R1+ to port 3.
Assign test port R1- to port 4.
Step 4. Assign test ports for channels 2, 3, and 4. Press the
channel and then make the setting in the same way as Step 3.
Step 5. Enable the control of the E5091A.
Setting Description
Enable the control of the E5091A.
4. Setting Control Line
Step 1. Set the bits of the control line for channel 1.
Setting Description
Set channel 1 to the active channel.
Line 1: Low
Line 2: High
Step 2. Set the control line for channels 2, 3, and 4 according to the same procedure as in Step 1.
5. Setting Sweep Conditions
Step 1. Set the sweep conditions for channel 1.
Setting Description
Set channel 1 to the active channel.
Start frequency: 400 MHz
Stop frequency: 1.4 GHz
Number of points: 201
Step 2. Set sweep conditions for channels 2, 3, and 4 according to the same procedure as in Step 1.
6. Setting Balance Conversion Topology
For channel 2, set the balance conversion topology in order to perform measurement that
Chapter 15
Measurement Examples
Key Operation
-
Port1
A
-
Port2
T1
-
Port3
R1+
-
Port4
R1-
key to switch the active
Key Operation
(set it to
)
Control
ON
Key Operation
(check only)
Control Lines
-
(set it to
Control Lines
Line 1
Key Operation
-
-
Point
)
High
523