Table of Contents
Advertisement
Introduction
Agilent N4373A Lightwave Component Analyzer, First Edition
21 Reconnect the LCA RF Output to the RF Input connector
of the optical test set.
22 Reconnect the fiber patchcord between the LCA Optical
Output and Optical Input.
23 If the LCA has Option #302 or #303, then repeat Steps 7-
8 using the new parameters and save the results as
ooIntRec1600.
24 If the LCA has Option #302 or #303 and has another
wavelength available, then repeat step 22 for the 2
wavelength and save the corresponding file in a separate
directory for the 2
25 In the User Interface Display, select the optical- to-
electrical measurement by starting O/E Measurement
mode. Set the correct wavelength in the next macro setup
panel and with the wavelength switch on the optical test
set. If Measure Mode is available, choose Single- End.
Then run the optical calibration. When the instrument
reports "Ready to Measure", press OK.
26 Now remove the LCA RF Input from the optical test set
and attach it to the RF output of the traceable reference
receiver.
27 Remove the optical fiber from the Optical Input of the
optical test set and attach it to the optical input of the
traceable reference receiver.
28 The O/E Measurement now represents the responsivity of
the reference receiver. Save the measurement as
oeRefRec.
29 If the LCA has another wavelength available, then repeat
Steps 24- 27 for the 2
corresponding file in a separate directory for the 2
wavelength.
Data Evaluation
30 Recall the file ooDark. Export the S
magnitude format. Divide the frequency range of the trace
into 10 segments. For each segment, calculate the average
signal level. Then convert these 10 numbers to electrical
dB with the formula 20log(x). These values now represent
the optical- to- optical minimum measurable responsivity
vs. frequency. Depending on the NWA option of the LCA,
this parameter is specified separately above and below a
particular frequency. Determine the highest level of dark
signal in these two frequency ranges and record the
Specifications and Regulatory Information
nd
wavelength.
nd
wavelength and save the
21
nd
nd
trace in linear
129
Advertisement
Table of Contents
