6-13
Performance Tests – Option 011
4. Receiver Minimum R Channel Level for External Source Mode
2On the external source, press PRESET, POWER LEVEL, 4, dB(m), CW, 10, MHz.
3On the analyzer, press PRESET, MENU, CW FREQ, 10, M/µ, SYSTEM, INSTRUMENT
MODE, EXT SOURCE AUTO to set up the analyzer for an external source input to
the receiver channel R.
4Press SYSTEM, SERVICE MENU, ANALOG BUS ON, MEAS, S PARAMETERS, ANALOG IN
Aux Input, 29, x1, COUNTER: FRAC N, MEAS, INPUT PORTS, R, to set up the analog bus
counter to measure the frequency of the fractional-N VCO.
5Press MARKER FCTN, MARKER MODE MENU, MKR SEARCH, TRACKING ON, SEARCH:MAX
to observe the maximum value of the receiver R input signal.
6The analyzer marker 1 should read –26 dBm (which appears on the analyzer
display). If the marker value exceeds –26 dBm, press POWER LEVEL on the
external source and decrease the power until the marker 1 reads –26 dBm.
7Press MARKER FCTN, MARKER MODE MENU, MKR SEARCH, SEARCH:OFF.
8Write the analog bus counter reading (which appears on the analyzer display)
on the “Performance Test Record”.
9On the external source, press CW, 20, MHz.
10 On the analyzer, press MENU, CW FREQ, 20, M/µ. If the analyzer’s marker value
readout exceeds –26 dBm, reduce the external source power level. Write the
analog bus counter reading and compare it with the acceptable limits on the
“Performance Test Record”.
11 Repeat Step 9 and Step 10 for the CW frequencies listed on the “Performance
Test Record”.
NOTE
The analyzer is phase-locked if the analog bus counter reading is within the limits shown
on the “Performance Test Record”.