Ceyear 4051 Series, User Manual

Page: 45 / 751

3 Introduction to Use
3.2 Front Panel & Rear Panel
31
Input Output To set frequency reference, coupling mode, input interface, calibration interface, High IF
output switch, logarithm detector output switch and input impedance.
Table 3.6-2 Description of measurement setting key area (continue)
Button name Function description
Marker
function
To provide additional analysis function for measurement marker:
– Marker Count
– Audio Demulation
– Noise Marker
− N dB measurement
– Bandwidth Power
– Bandwidth Density
Peak search
To execute peak search, delta marker, give marker frequency to center frequency and give
marker level to reference level functions for active markers. If no marker is active, enable
normal marker 1 and execute peak search.
3.2.1.7 Keyboard
To enter alphanumeric parameters. Including the following keys:
1) Alphanumeric keys
To enter numbers and (special) characters in the edit dialog. See ―3.3.1.4 Input data‖ in the Manual for more
details.
2) Decimal point
To inset one ―.‖ At cursor position.
3) Symbolic keys
To change symbols of numeric parameters. When inserting an alphanumeric parameter, a ―–‖ will
show
at the
cursor position.
4)
Backspace key
 When alphanumeric character has been entered, this key will delete the character at the left of the cursor;
 If no input field is active, this key will cancel recently entered value and restore the previous value.
Therefore, users can switch between two values (such as frequency span).
5) Enter key
 To terminate the input of a dimensionless number and set it as a new value;
 For other inputs, this key may be used as unit key including ―Hz/dB‖;
 Press Default or Focus button in the dialog.