10-4
IM AQ1300-01EN
Turning the Maximum and Minimum Value Menu On and Off
In the Power Meter screen, you can display a menu that shows the maximum (Max) and minimum (Min)
measured values.
On
The menu is displayed.
Off
The menu is not displayed.
Turning the Maximum and Minimum Value Display On and Off
In the menu that appears in the Power Meter screen, you can start the display of the maximum and
minimum measured values. The maximum and minimum value displays are constantly updated
while measurement is being performed.
On
The maximum and minimum measured values from the time that you selected On are constantly
updated and displayed.
Off
The maximum and minimum values are not displayed. The maximum and minimum values are
reset when you select Off.
Measured value
Turns the max/min value display on and off
Maximum value
Minimum value
Offset
The value that you specify (the offset value) is added to the measured optical power values that are
displayed.
The range is –9.900 to 9.900 dBm.
Threshold Value
You can set upper and lower threshold values and determine whether or not the measured values fall
within them.
• The range for the upper and lower threshold values is –70 to 5 dBm. You must set the values so
that the upper threshold value is greater than the lower threshold value.
• When a measured value is within the upper and lower thresholds, its bar graph is green.
• When a measured value exceeds the upper threshold or falls below the lower threshold, its bar
graph is red.
Refer to the table below for recommended threshold settings for the receiving device.
Test Interface
Upper Limit
Lower Limit
1000BASE-SX (SFP)
*
0.0 dBm
–17.0 dBm
1000BASE-LX (SFP)
*
–3.0 dBm
–19.0 dBm
10GBASE-SR (XFP)
*
–1.0 dBm
–9.9 dBm
10GBASE-LR (XFP)
*
+0.5 dBm
–14.4 dBm
10GBASE-ER (XFP)
*
–1.0 dBm
–15.8 dBm
100BASE-FX (SFP)
**
–14.0 dBm
–31.0 dBm
*:
Taken from the average receive power values listed in IEEE 802.3
**:
Taken from the ISO/IEC 9314-3
Holding the Measured Value Display
When you press the HOLD soft key, the updating of the measured values, bar graph, and maximum
and minimum values is held. The values at the time that you pressed the HOLD soft key remain
displayed. To release the hold on the display, press the HOLD soft key again.
Not updated
The display is being held.
10.2 Setting Optical Power Measurement Conditions and Holding the Display
