4-10
IM AQ6376-01EN
Explanation
SUB SCALE **.*dB/km
(Setting the sub scale to dB/km)
The setting range is 0.1 to 10.0 dB/km. Settings can be adjusted in steps of 0.1. If you
press the COARSE key you can change the numerical value in 1-2-5 steps, for example:
1dB/DIV -> 2dB/DIV -> 5dB/DIV.
When the setting is changed, the displayed waveform is redrawn according to the
changed scale.
SUB SCALE ***.*%/D
(Sets the sub scale to %.)
The setting range is 0.5 to 125 %/D. Settings can be adjusted in steps of 0.1. The value
changes in steps of 1-2-5 if you press the COARSE key.
When the setting is changed, the displayed waveform is redrawn according to the
changed scale.
OFFSET LEVEL
(Sets the offset value. This is enabled when the sub scale is dB/D or dB/km.
The range that can be set is as follows.)
For dB/D: 0–±99.9 dB. Settings can be adjusted in steps of 0.1. The value changes in
steps of 1 if you press the COARSE key.
For dB/km: 0–± 99.9 dB/km in steps of 0.1.
SCALE MIN
(Sets the scale lower-end value. This is available when the sub scale is LIN or %.
The range that can be set is as follows.)
For LIN: 0 to the sub scale value (***.*/D) x 10
For %:
0 to the sub scale value (***.*%/D) x 10
LENGTH **.***km
(Sets the length of the optical fiber. This is available when the sub scale is dB/km.)
The setting range is 0.001 to 99.999 km. Settings can be adjusted in steps of 0.001. The
value changes in steps of 1-2-5 if you press the COARSE key.
AUTO SUB SCALE OFF/ON
(Turns OFF/ON the function for automatically scaling the sub scale following calculation.)
When set to ON, during trace C display, SUB LOG or SUB LIN and OFFSET LEVEL
change automatically. When these are changed, the displayed waveform is redrawn
according to the changed scale.
When set to ON,
is displayed at the bottom of the screen in inverse video.
SUB REF LVL POSITION **DIV
(Sets the sub scale REF position.)
The REF position is set at DIV number **, counting from the bottom of the screen.
The setting range is 0 to 12. Settings can be adjusted in steps of 1. The value changes in
steps of 1-2-5 if you press the COARSE key.
4.3 Sub Scale