Frequency Controls; Span Controls; Amplitude Controls; Marker Controls - Test Equipment Plus Signal Hound USB-SA44B User Manual

G E T T I N G S T A R T E D
2.2.1

FREQUENCY CONTROLS

CENTER FREQ sets the center frequency of the sweep. When clicked, a
⇒
popup will open, allowing you to enter the frequency using the mouse or
keyboard.
STEP sets the frequency increment / decrement amount. Default is 10
⇒
MHz.
The UP and DOWN arrows will change the center frequency by a preset
⇒
STEP amount.
START and STOP set the sweep's start and stop frequencies, respectively.
⇒
2.2.2

SPAN CONTROLS

SET SPAN sets the span of the sweep, the difference between start and
⇒
stop frequencies. The center frequency is held constant.
The UP and DOWN arrows will step through the default spans from 100
⇒
Hz to 1 GHz, in a 1,2,5 pattern.
ZERO SPAN changes the x-axis on the graticule to time instead of
⇒
frequency. The y-axis may be demodulated amplitude or frequency. When
this button is clicked, a popup will open, allowing the user to select
amplitude (AM) or frequency (FM) for the y-axis.
FULL SPAN sets the span to its maximum.
⇒
2.2.3

AMPLITUDE CONTROLS

REFERENCE LEVEL sets the power level for the top graticule line.
⇒
You may select EMC units here, including V/m, mW/cm
linear mode.
The UP and DOWN arrows will change the reference level by a preset
⇒
amount, equal to dB/div.
ATTEN sets the internal electronic attenuator to 0, 5, 10, or 15 dB.
⇒
dB/div sets the scale for the y-axis. It may be set to any positive value.
⇒
o 10 dB /div is default, giving a full scale range of 100 dB.
LIN sets the amplitude scale to linear "voltage" units, instead of logarithmic.
⇒
2.2.4

MARKER CONTROLS

The left-right arrows scroll between the available markers. Markers 1 thru
⇒
9 are available, each with its own reference point. You may place a marker
6
2
, etc, in log or