Anritsu MS9710C - 9.4 AP [Application]

9-7
9.4 AP [Application]
AP DFB [Application (DFB - LD)]
■ Function
Measures DFB-LD.
When the processing is complete, bit 0 (measurement end bit) of the extended
event status register (ESR2) is set to 1.
Header Program Query Response
AP AP DFB, s , n AP ? DFB, s , n
■ • Value of s
s = 2NDPEAK: Carry out an analysis with respect to the side mode at second
highest level.
= LEFT: Carry out an analysis with respect to the side mode on the left
(shorter wavelength side) of the peak wave.
= RIGHT: Carry out an analysis with respect to the side mode on the right
(shorter wavelength side) of the peak wave.
• Value of n
n is the value used for ndB-width measurement (wavelength reduced by n dB).
The unit is dB. Input an integer.
Data range: 1 ≤ n ≤ 50
■ Initial setting value
s and n are backed up values.
■ Default
s = 2NDPEAK
n = 20 (dB)
9.4 AP [Application]