Instrument Tour
R&S
®
FSW
42
Getting Started 1338.4102.02 ─ 08
5.1.5
Keypad
The keypad is used to enter alphanumeric parameters, including the correspond-
ing units (see also
Chapter 7.4.2, "Entering Alphanumeric Parameters"
on page 103). It contains the following keys:
Table 5-2: Keys on the keypad
Type of key
Description
Alphanumeric keys
Enter numbers and (special) characters in edit dialog boxes.
Decimal point
Inserts a decimal point "." at the cursor position.
Sign key
Changes the sign of a numeric parameter. For an alphanumeric
parameter, inserts a "-" at the cursor position.
Unit keys (GHz/-dBm MHz/
dBm, kHz/dB and Hz/dB)
Adds the selected unit to the entered numeric value and com-
plete the entry.
For level entries (e.g. in dB) or dimensionless values, all units
have the value "1" as multiplying factor. Thus, they have the
same function as an Enter key.
[Esc] key
Closes all kinds of dialog boxes, if the edit Mode is not active.
Quits the edit mode, if the edit mode is active. In dialog boxes
that contain a "Cancel" button it activates that button.
For "Edit" dialog boxes the following mechanism is used:
●
If data entry has been started, it retains the original value
and closes the dialog box.
●
If data entry has not been started or has been completed, it
closes the dialog box.
Backspace key
If an alphanumeric entry has already been started, this key dele-
tes the character to the left of the cursor.
Enter key
●
Concludes the entry of dimensionless entries. The new value
is accepted.
●
With other entries, this key can be used instead of the
"Hz/dB" unit key.
●
In a dialog box, selects the default or focused element.
5.1.6
TRIGGER INPUT / OUTPUT
Use the female TRIGGER INPUT connector to input an external trigger or gate
data. Thus, you can control the measurement using an external signal. The volt-
age levels can range from 0.5
V to 3.5
V. The default value is 1.4
V. The typical
input impedance is 10
kΩ.
Use the female BNC TRIGGER INPUT / OUTPUT connector to receive a second
external signal or to provide a signal to another device. The signal is TTL compat-
Front Panel View
