5-6
IM AQ6370D-01EN
LIN SCALE
This key is used to set the main scale to linear scale.
Settings per 1 DIV are set in the reference level.
LIN BASE LEVEL **.*mW
Value when the vertical axis is linear scale, you can set the level scale low-end. This is
not available when using a log scale.
The setting range is 0.0 to REF level x 0.9. Settings can be adjusted in steps of 0.1. The
value changes in steps of 1 if you press the COARSE key. Values can only be set in the
instrument set for the REF level.
When the setting is changed, the displayed waveform is redrawn according to the
changed scale.
The scale display in the upper left part of the waveform is 1/10 the value (*W/D) of the
reference (REF) level minus the low-end (BASE) level.
For information on the REF level setting, see section 5.4, "Setting the Reference Level."
LEVEL UNIT dBm dBm/nm
When the vertical axis is log scale, the display toggles between dBm and dBm/nm.
dBm: Power per resolution (absolute power)
dBm/nm: Power per 1 nm (power density)
For information on the use of dBm and dBm/nm, see “Power Density Display” in section
2.2, “Measurement.”
If you set a calculated waveform to power density, the level unit is automatically set to
dBm.
If power density is assigned as the calculated waveform to Trace F and the unit is set to
dBm/nm, Trace F enters FIX mode, and the waveform is no longer updated.
LEVEL UNIT mW mW/nm
When the level axis uses a linear scale, the display switches between nW, μW, mW, or
pW (absolute power), and nW/nm, μW/nm, mW/nm or pW/nm (power density).
5.2 Horizontal/Vertical Axis Settings
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