Tektronix 1705A SPECTRUM, SPAN/DIV, Changing Readout Frequency

Operating Instructions
1705A Spectrum Monitor 2-15
.
SPECTRUM
DISPLAY
READOUT MODE
ON
OFF
L-BAND
OFFSET
L.O.HIGH
>EXIT
USESPAN KEYS TO MOVE CURSOR,
PRESSINPUT KEY TO SELECT.
MAIN MENU
READOUTMODE
READOUTPOSITIO N
TEST
>EXIT
USESPAN KEYS TO MOVE CURSOR,
PRESSINPUT KEY TO SELECT.
READOUT POSITION
OFFSET ADJUST
TEST
MEMORY
DAC
LED
KEY
>EXIT
USESPAN KEYS TO MOVE CURSOR,
PRESSINPUT KEY TO SELECT.
DOWN
UP
EXIT/SAVE
[<SPAN]
[SPAN>]
[INPUT]
UP
DOWN
LEFT
RIGHT
EXIT/SAVE
[RES]
[VIDEO]
[<SPAN]
[SPAN>]
[INPUT]
SPAN/DIV
Figure2 -10: Using the 1705A menus. Mainmenu is entered f rom the spectrum display by pressing both SPAN/DIV
buttons simultaneously
NOTE. The 1705A must be returned to the normal operating routinebefore the
front-panelpush-button switches perform the label functions. Push the INPUT
push button as many times as requiredto bring up the spectrum analyzer display.
The 1705A readoutnormally displays the frequency of the L--Bandor 70 MHz
input signal. The L--Bandinput is a downconverted signal between 900 to
2000 MHz, which by itself doesnot return meaningful information. Because o f
this it may be easierto display the readout that corresponds to the actual satellite
Changing Readout
Frequency