5-18
MPM-210 Operation Manual
The MPM-210 has “CONST1”, “SWEEP1”, “CONST2”, “SWEEP2” and “FREERUN” as
the measurement mode. Each mode function shows as below.
• CONST1, CONST2: Measure optical power at the fixed wavelength.
• SWEEP1, SWEEP2: Measure optical power within the set wavelength range that
is set by the “WSET” command.
• CONST1, SWEEP1, FREERUN: Measure optical power at the fixed range that
is set by the “LEV” command. These mode give priority to the measurement
accuracy.
• CONST2, SWEEP2: Measure optical power at the auto range. These mode give
priority to the measurement speed.
• FREERUN: Measure optical power every the set averaging time. The
measurement starts from the hardware trigger.
5-6 Logging mode
■ 5-6-1 Measurement mode (WMOD)
■ 5-5-6 LEV/LEV?
In case of the measurement mode CONST1, SWEEP1 and FREERUN, the “LEV”
command sets the power range and the “LEV?” command reads out the set power
range. The Table 5.5.1 shows the corresponding power for each range. The Upper
Power Limit is always 2dB greater than the optical power value of the chosen range.
However, the measurement performance of larger power than the following power for
each Range is out of warranty.
Range Opticalpower (dBm)
1 <+10
2 <+0
3 <-10
4 <-20
5 <-30
Table 5-5-1
Range vs. input power
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