HP 8559A User Manual

PERFORMANCE TESTS MODEL 8559A
PERFORMANCE TESTS
4-1 1.
FREQUENCY SPAN ACCURACY (Cont'd)
13.
Set function generator frequency to 200 kHz (k 0.5%) using frequency counter. Connect function genera -
tor output to comb generator MODULATION input. Set function generator OUTPUT LEVEL for a
clean 200
- kHz comb on the spectrum analyzer display.
NOTE
To obtain a clean comb on the spectrum analyzer display, use either the
LOW or
HIGH output of the function generator and readjust the OUTPUT
LEVEL control as necessary.
14.
Set spectrum analyzer FREQ SPAN/DIV to 200 kHz. Adjust TUNING control to position one spectral
line on the first graticule line. Measure the error between ninth spectral line and ninth graticule line. Error
should be no greater than
k 0.4 division.
div
15. Using the procedure of NOTE in step 13, vary spectrum analyzer FREQ SPAWDIV and function genera -
tor output frequency in accordance with Table 4 - 2. Adjust spectrum analyzer TUNING control to position
one spectral line on the first graticule line. Measure the span error between ninth spectral line and ninth
graticule line.
NOTE
Disconnect function generator from comb generator when setting fre
-
quency with frequency counter. Increase spectrum analyzer REFERENCE
LEVEL control setting as necessary for the lowest frequencies.
TABLE 4-2. NARROW SPAN WIDTH ERROR MEASUREMENT
I
*Check function generator output frequency using a frequency counter. Frequency readout should be within f 0.5% of
desired audio frequency.
Function Generator
Span Width Error
Output Frequency*
I
Spectrum Analyzer
100 kHz
50 kHz
20 kHz
10 kHz
FREQ SPANIDIV
RESOLUTION BW
OPTIMUM
OPTIMUM
OPTIMUM
OPTIMUM
100 kHz
50 kHz
20 kHz
10 kHz
k0.4 div. - div.
+0.4 div. - div.
k0.4 div. - div.
k0.4 div. - div.

HP 8559A Specifications

General

Brand	HP
Model	8559A
Category	Measuring Instruments
Language	English