Signal Separation Group Operation; Configurable Test Set - Keysight Technologies N5221A Service Manual

Theory of Operation

Signal Separation Group Operation

Signal Separation Group Operation
The signal separation group divides the source incident signals into a reference
path and a test path. Refer to
page
— The reference signals are transmitted to the receiver group as the R1, R2,
— The test signals are transmitted through—and reflected from—the device
— Control lines to this group are routed from the A19 test set motherboard.
In this section, the following assemblies are described:
—
—
— Front Panel
—

Configurable Test Set

The configurable test set is included in the standard analyzer and allows you to
measure devices with higher power and higher dynamic range limits than an
analyzer without the configurable test set. On 4-port models, twelve signal
paths, routed through front panel SMA jumpers, comprise the configurable test
set. On 2-port models, there are six signal paths routed through front panels
jumpers in the configurable test set.
As shown in
jumpers are installed between the components listed below. Ports 3 and 4
apply only to 4-port models.
— the A25 port 1 receiver coupler and the A23 mixer brick receiver R1
— the A26 port 3 receiver coupler and the A24 mixer brick receiver R3
— the A27 port 4 receiver coupler and the A24 mixer brick receiver R4
— the A28 port 2 receiver coupler and the A23 mixer brick receiver R2
— the A25 port 1 receiver coupler and the A29 test port 1 coupler
— the A26 port 3 receiver coupler and the A30 test port 3 coupler
— the A27 port 4 receiver coupler and the A31 test port 4 coupler
— the A28 port 2 receiver coupler and the A32 test port 2 coupler
— the A29 test port 1 coupler and the A23 mixer brick receiver A
— the A30 test port 3 coupler and the A24 mixer brick receiver C
5-16
5-19.
R3, and R4 inputs for 4-port models or the R1 and R2 inputs for 2-port
models.
under test (DUT) and then transmitted to the receiver group as the A, B, C,
and D inputs for 4-port models or the A and B inputs for 2-port models.
A25–A28 Receiver Couplers
A29–A32 Test Port Couplers
Jumpers—Configurable Test Set
A34–A37 65-dB Source Step Attenuators and A38–A41 Bias Tees
Figure 5-4 on page 5-18
Figure 5-4 on page 5-18
and Figure 5-5 on page
Keysight N5221A/22A Service Guide
and Figure 5-5 on
5-19, these