PPM-350B
13
Testing in Pass/Fail Mode or in Normal Mode
³
Pass/Fail mode: status is indicated directly (screen and LEDs). Status is
determined according to the current threshold set (see
Selecting a Threshold
Set
on page 11).
³
Normal mode: only the power levels are shown and LEDs are off.
Note:
If the result is greater than the Pass threshold, the word
Fail
and the LED
will flash. If the result is lower than the Fail threshold, the unit will only
display
Fail
and the LED will not flash.
Note:
On 1-port units, you will only see values at 1490 nm and 1550 nm.
At startup, the unit is in the same mode that was used during last test session.
You may activate the Pass/Fail mode at any time (except during nulling, threshold
verification, and LEDs and LCD verification).
Pass/Fail
Normal
Signal (wavelength)
Power levels (dBm; dB only
possible with models
measuring relative power)
Status
LEDs are on:
Green (Pass),
Yellow (Warning), Red (Fail)
Correction factor not
equal to 0 dB
When power is outside unit’s power limits
(see
Technical Specifications
on page 31)
Power levels (dBm only)
