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Checks and Adjustments
1705A Spectrum Monitor
5-9
! !
SG503
VARIABLE
AUTOTRANSFORMER
70 MHz
INPUT
1705A
Figure 5-3: Output of the SG503 connected directly to the 1705A 70 MHz INPUT
g. Set the leveled sine wave generator Frequency to 45 MHz, Amplitude
Multiplier to .01, and Amplitude to 0.5 (--42 dBm).
h. Set the 1705A SPAN/DIV to FULL, and the CENTER FREQUENCY to
read 45 MHz. Check to see that the marker is intensified.
i. Set the 1705A SPAN/DIV to 1 MHz and check that the marker is on
screen.
j. Position the marker under the readout caret with the CENTER FR E-
QUENCY control.
k. CHECK -- that readout reads 45, ±1 count.
l. Set SPAN/DIV to 100 kHz.
m. CHECK -- that the marker is on screen.
n. Repeat steps h. through m., substituting 95 MHz.
o. Leave SPAN/DIV at 100 kHz.