SECTION 3: OSCOR MANUAL OPERATION
REI
OSC-5000E
30
Adjusting the Frequency Display
In both the Sweep Mode and the Analyze Mode, the frequency display indicates both
start and stop frequencies, as well as the frequency span, sweep frequency, and cursor
frequency. The frequency parameters are indicated using arrows on the screen.
The start frequency is indicated with a left arrow:
Í
######
The stop frequency is indicated with a right arrow: ######
Î
The frequency span is indicated with two arrows:
Í
######
Î
The tuning frequency is indicated with no arrows: ######
The cursor frequency is indicated with large numbers:
######
FIGURE 17 FREQUENCY DISPLAY
NOTE
: In the Sweep Mode, the tuning frequency changes continuously as the receiver
sweeps the frequency span. In the Analyze Mode, the tuning frequency will be the same
as the cursor frequency.
Rotary Dial
The rotary dial moves the tuning cursor on the display and will jump to the next frequency
span when the cursor reaches a screen end limit. Entering the desired frequency directly
on the keypad can also move the cursor.
The cursor can be positioned over any signal to identify its frequency or to select that
frequency in the Analyze Mode.
EXPAND and NARROW
The displayed frequency span can be adjusted by using the EXPAND and NARROW
buttons. Each push of these buttons increases or decreases the frequency display by a
pre-defined increment.
Pressing SHIFT then EXPAND will force the screen to jump to the maximum frequency
display. SHIFT followed by NARROW will move the frequency display to the minimum
frequency display.
Wide views of the spectrum (1,000 or 1,500 MHz) will show multiple signals’ frequency
placement and amplitude. A narrower spectrum view allows easier separation of each
signal when selecting one to view in the Analyze Mode. A close-up narrow view will
clearly show each individual signal and its modulation.
To narrow in on a signal, use the rotary dial and the NARROW button to focus on the
signal while decreasing the frequency span of the display.