4-61
Performance Tests
16. Test Port Receiver Phase Compression
Test Port 1 Phase Compression
13 Press MEAS, Trans: E/E S12 REV, FORMAT, PHASE.
14 Press MENU, CW FREQ, 50, M/µ.
15 Press MENU, TRIGGER MENU, SINGLE.
16 At the end of the sweep, press SCALE REF, AUTO SCALE.
17 Press MARKER, ∆ MODE MENU, ∆REF= 1, MARKER FCTN, MARKER MODE MENU, MKR
SEARCH, SEARCH: MAX.
18 Press MARKER, MARKER 2, MARKER FCTN, MARKER MODE MENU, MKR SEARCH,
SEARCH: MIN.
19 Write the absolute value of the marker 2 reading in the “Measured Value”
column of the “Performance Test Record.”
20 Repeat Step 14 through Step 19 for the other CW frequencies listed for Port 1
in the “Performance Test Record.”
In Case of
Difficulty
WARNING These servicing instructions are for use by qualified personnel only.
To avoid electrical shock, do not perform any servicing unless you are
qualified to do so.
WARNING The opening of covers or removal of parts is likely to expose
dangerous voltages. Disconnect the instrument from all voltage
sources while it is being opened.
WARNING The power cord is connected to i nternal capacitors that may remain
live for five seconds after disconnecting the plug from its power
supply.
1If the analyzer fails the “Test Port 2 Phase Compression” test:
aRepeat this test.
bReplace the A6 B sampler assembly if analyzer still fails the test.
2If the analyzer fails the “Test Port 1 Phase Compression” test:
aRepeat this test.
bReplace the A5 A sampler assembly if analyzer still fails the test.