Handheld Optical Power Meter
29
MATCHED Light Source Power Meter
Fig. 6-31
6.7 Frequency detection
Note
: When use tone detection function, following requirements have to be taken into account:
For A: Tone detection will be effective only with measurement range b6~-40dBm.
For C: Tone detection can be worked only with measurement range b26
～
-20dB, because the detected
frequency will be unstable when the power is weak.
How to act tone detection on Power Meter?
Connect power meter with its same serials light source JW3116.
Output frequency from MATCHED optical light source: Press
to emerge light from the unit,
press
for very short second
，
MATCHED light source will output frequencies of 270Hz
、
330Hz
、
1KHz
、
2KHz accordingly
，
which will be shown on the upper right of the LCD in MATCHED
light source. In the mean time, the power meter will detect the corresponding frequency
automatically from MATCHED light source. Please refer to below figure (6-32) for better
understanding:
MATCHED Light Source Power Meter
Fig. 6-32
270Hz
330Hz
1KHz
2KHz
270Hz
330Hz
1KHz
2KHz
1310nm(xxdBm)
1550nm(xxdBm)
……
1310nm(xxdBm)
1550nm(xxdBm)
……
