AMPLITUDE
57
Set Input Impedance
Select input impedance (50
Ω
/75
Ω
)
Background
In most cases, the default 50
Ω
is appropriate. Use 75
Ω
when specifically required, such as in cable TV signals.
1.
Press the Amplitude key.
Amplitude
2.
Press F6 (More).
More
F 6
Panel operation
3.
Press F1 (Input Z 50
Ω
/75
Ω
) to
select the impedance.
4.
When 75
Ω
is selected, the
amplitude icon appears at the
bottom of the display.
Set impedance offset (75
Ω
only
)
Background
Impedance transformation to 75
Ω
is also available
through external devices such as impedance converter
module (optional accessory ADP-101). In these cases an
external loss will be induced. Impedance offset can
compensate this effect.
1.
Press the Amplitude key.
Amplitude
2.
Press F6 (More).
More
F 6
Panel operation
3.
Make sure 75
Ω
is selected in F1
(Input Z).
4.
Press F2 (Input Z Cal).
Input Z Cal
5.9dB
F 2
5.
Enter the offset using the
Numerical keys and dB or Enter
key.
BK SP
dB
Enter
GHz /
Sec
mSec
MHz /
kHz /
Sec
μ
Range
−
10dB to +10dB, 0.1dB resolution
