Tektronix RSA2200A, User Manual

Page: 72 / 354

Functional Overview
2- 18
RSA2203A & RSA2208A User Manual
Changing a Setting Using the General Purpose Knob or the Up/Down Keys.
1. Press the side key for setting a numeric value. For example, press
FREQUENCY/CHANNEL
→
Center Freq to set a center frequency.
The menu item changes to the display as shown in Figure 2--15.
Indicates that numeric values can be changed
with the general purpose knob.
Numeric input field
Figure 2- 15: Changing value with the knob
2. Turn the general purpose knob to increase or decrease the value.
You can also use the up and down ( ▲
B
) keys to increase or decrease a
setting value, respectively.
Down key:
Decreases the value.
General purpose knob:
Rotate clockwise to increase the
value and counterclockwise to
decrease the value.
Up key:
Increases the value.
The up and down keys have the same functions as the general purpose knob
except the step size (the amount per click by which the general purpose knob
changes a setting value or the amount per press for the up and down keys) as
follows:
H
For the general purpose knob, the step size is determined internally.
You can not change the step size.
H
For the up and down keys, the step size is set with the
Step Size
side key.
Refer to Changing the Step Size on page 2--20 for the detail.
The changed value is immediately reflected on the analyzer settings and displays.