ADInstruments AD8000 Series Instruction Manual page 60

AD8000 Series Spectrum Analyzer Instruction
Manual
(4) Unit
Press the corresponding unit soft-ey, and the amplitude unit sub-menu
would pop-up. For example, the current unit is dBµV. Press the soft-key
dBm to change it to dBm
Note：The change of unit will not cause the change of 'Log/Line' state.
(5) Scale/Div
It shows at the top of the screen. It is also divided into 2 kinds log and
linear.
In log state, it refers to how many dB changing with each scale. The default
is 10dB/div. After pressing 'Scale/Div' soft-key user can enter the integer
number from 1 to 40 or decimal number from 0.1 to 0.9 to change the scale
to the state wanted. The scale/div can be changed by 'Up/Down' cursor or
by knob too.
In linear state, scale/div shows in multiple (×n). The default multiple is 1.
After pressing 'Scale/Div' soft-key, the submenu of it will appear. Users can
choose ×1, ×2, ×5 or ×10 in this submenu. Random number is not available.
1/n is the ratio of voltage difference between the lowest level displayed on
the screen and reference level. For example when reference level is 1mV, if
the Scale/Div is ×1, the lowest voltage display on the screen is 0mV, while if
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Fig. 3-14 Amplitude Unit