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KI 7340/7740 UM-12
23
POWER METER MANUAL OPERATION
Power meter section can be operated with external light source or in
combination with Light source section of the Loss Test Set to measure
Tx / Rx absolute power levels, to perform continuity or loss testing.
The instrument will link Light source and Power meter wavelengths
when both sections used in combination.
To measure the operational power level in a fiber optic system, the
Power meter is used in dBm or linear modes. To measure optical loss
or attenuation, the Power meter is used in dB mode, and the source
power is taken as a reference.
•
To use Power meter section as individual instrument, turn on
Loss Test Set and select [Power Meter]. Power meter will be
operational at the last used wavelength.
•
To scroll wavelengths, press [-/+]. The display will show
nominal wavelength in nm.
•
To toggle absolute / relative display mode, press [Abs/Rel].
Measured optical power will be displayed
in ‘dBm’ or ‘dB R’.
•
To set reference, press [Abs/Rel] and then [Set Ref] for 3
seconds.
•
When in relative mode, the reference value is displayed on the
left hand side of the display.
•
To stop / start display update, press [Hold]. The symbol will
flash when the display is on hold.
•
To toggle log / linear display mode, press [dB/W] on the hidden
keypad.
•
To display minimum and maximum recorded power for
selected wavelength, press [
] and then [Max/Min] on the
hidden keypad. Press [
], then [Max/Min] and hold for 3
seconds to re-start the recording process. This function re-sets
automatically when instrument parameters are altered,
making it handy data logging function for the field use.
•
If the meter detects a test tone between 150 Hz and 9999 Hz,
the display will change to show the actual measured
modulation frequency in Hz.
•
If a standard tone is detected (eg 270 Hz, 1 KHz, 2 KHz), a
buzzer will sound. This is useful for fiber identification and
signalling. The meter can also be used to check the actual
modulation frequency of test sources (between 150 Hz and
9999 Hz).
Содержание KI 7340 Series
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