Agilent Technologies 85032B/E 50 Specifiche Pagina 38

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
Vedere la pagina 37
Performance Checks 8712ET/ES and 8714ET/ES
Performance Test Software RF Network Analyzers
1-30 Service Guide
PT07: Broadband Frequency Response
This test checks the frequency response flatness of the broadband B* detector. It is checked
at a nominal6 dBm signal level.
Test Process.Connect the output of the analyzer to a power splitter. Connect the power
splitter outputs to the analyzer and to a calibrated power meter. Preset the analyzer and
make sure the power level is set for 0 dBm. Step the analyzer through a cycle of
approximately 12 CW frequencies while the B* and power meter readings are recorded.
(The CW frequencies must include 10 MHz and 1.3 or 3.0 GHz, as appropriate.) Swap the
output connections on the splitter and repeat the process. Average the two sets of readings
to eliminate differences within the power splitter. Calculate the difference between the B*
reading and the power meter reading for each frequency. Use a reading at 30 MHz as a
reference. Subtract the reference from each of the other differences, and check the results
against the specification.
Adapters are generally required for this test. A 75 analyzer requires a 75 power splitter
and power sensor. A power divider may be used in place of the power splitter.
Specification Verified.This test verifies the “Test Port Input: Broadband Flatness”
characteristic inTable1-9 starting on page1-63. This test also verifies the “Test Port
Input: Frequency Range” specification for broadband inTable 1-9.
If This Test Fails.Repeat the test after verifying that all connections are secure. There is
no corresponding adjustment for this test.
Vedere la pagina 37
1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 268 269

Commenti su questo manuale

Nessun commento