Operation Overview
Model 3585A
3-2
3· 1 . PERFORMANCE SUMMARY AND DESCRIPTION
The Model 3585A is a high-performance, easy-to-use spectrum analyzer, covering the 20 Hz
to
40. 1
MHz frequency range. It can be used as a stand-alone bench instrument for signal
analysis and network-analysis applications; or, through its HP-IB interface, it can be linked
to a computing controller and up to thirteen other HP-IB instruments to form a powerful
automatic measurement system. *
3585A PERFORMANCE SUMMARY
FREOUENCY:
Measurement Range:
20 Hz to 40. 1 MHz
Displayed Range:
o
Hz to 40. 1 M Hz full span
Resolution:
3 dB bandwidths of 3 Hz to 30 kHz in a
1 , 3, 1 0 sequence
Manual Frequency Accuracy:
± 0 . 1 Hz ± 1 x 1 0 - 7/mo.
Marker Accuracy:
Normal ± 0 . 2 070 of Frequency Span
± Resolution Bandwidth
Counter ± 0 . 3 Hz ± 1 x 1 0 - 7/mo.
AMPLITUDE:
Measurement Range:
- 1 37 dBm to
+
30 dBm ( 5 00 or 7 50)
Displayed Range:
1 0, 5, 2, 1 dB/DIV over a 1 0 division
scale
Dynamic Range:
Harmonic distortion and third order
intermodulation distortion
>
80 dB
below signal
::5
to the Range Setting.
Average Noise Level:
<
- 137 dBm in the 3 Hz Resolution Band
width
Accuracy:
Best achievable accuracy over the
measurement range is ± 0.4 dB to ±
1 . 3 dB depending on the level.
SWEEP:
Time:
0 . 2 sec. to 5 9 , 6 5 2 hrs.
INPUT:
Signal Inputs:
T e r m i n a t e d 5 0 1 7 5 0; r e t u r n l o s s
>
2 6 dB
High-Impedance 1 MO; ± 3 % shunted
by < 30 pf
Max. Input Level:
5017 50;
+
30 dBm ( 1 watt)
1 MO; 42 V Peak
OUTPUTS:
Tracking Generator:
o
dBm to - 1 1 dBm ( 5 0 ohms)
Display:
X, Y, and Z outputs for auxiliary CRT
display
Plotter:
Horizontal sweep output (x) , video out
put (y), and penliftlblanking output to
drive an X-V recorder.
INSTRUMENT STATE STORAGE:
Up to three sets of user-defined control set
tings may be saved and recalled.
REMOTE OPERATION:
All analyzer control settings (with the excep
tion of line, tracking generator amplitude and
display) can be programmed via the Hewlett
Packard I nterface Bus ( H P- IB) .
*
*Hewlett-Packard Interface Bus (HP-IB) is -hp-'s implementation of IEEE Standard 488-1975 and identical AN
SI Standard MC 1 . 1 , "Digital Interface for Programmable Instrumentation " .
