Tektronix WCA200A, User Manual

Page: 256 / 454

Setting Amplitude
3- 130
WCA230A & WCA280A User Manual
NOTE . As the mixer level increases, the distortion also increases.
Vertical Scale.
S/A mode (except Real Time) only. Sets the vertical scale (per
division). The setting range depends on Vertical Units described below, as shown
in Table 3--21.
Table 3- 21: Vertical scale setting range
Vertical units Scale setting
1
dBm, dB
m
V 1 to 10
V 223.6 n to 22 m
m
V 223.6 m to 22 k
W 100 p to 100
m
1
1-2-5 sequence with the general purpose knob.
Arbitrary value with the numeric keypad.
Vertical Units. Selects the unit of amplitude scale: dBm, dB
m
V, V,
m
V, or W.
Corrections... Sets amplitude correction. Refer to page 3--132 for details of
amplitude correction.
To set amplitude, follow these steps:
1. Press the AMPLITUDE key on the front panel.
2. Set the reference level using the Ref Level side key.
3. To best display the waveform automatically, press the Auto Level side key.
4. To set the attenuation level or the mixer level manually, use the
RF Atten/Mixer
side key to select
RF Att
or
Mixer
.
When you select RF Att :
Select the attenuation level with the
RF Att
side key.
When you select
Mixer
:
Select the first mixer input level using the Mixer Level side key.
5.
S/A mode (except Real Time) only.
Use the Vertical Scale side key to set the vertical scale (per division).
Use the
Vertical Units
side key to select the unit.
6.
To apply amplitude correction, press the
Corrections...
side key to set the
parameters. Refer to Amplitude Correction on page 3--132 for details.
Basic Setting Procedure