Hewlett Packard 3585A Spectrum Analyzer

• 80 db dynamic range
• 3 Hz resoulution bandwidth
• ± 0,4 dB amplitude accuracy
• Ext trigger
• Ext frequency reference
• Tracking generator
• 50, 75, 1MW input impedance
  
  

Specifications

Frequency
Measurement range: 10 Hz to 40.1 MHz
Displayed frequency span
Range: 0 Hz to 40.1 MHz variable with 0.1 Hz resolution or 10 Hz to 40 MHz in 1, 2, 5 steps
Accuracy: -0% + 0.2% of frequency span setting
Resolution bandwidth
Range: 3 dB bandwidths of 3 Hz to 30 kHz in a 1, 3, 10 sequence
Accuracy: ± 20% at the 3 dB points
Selectivity: 60 dB / 3 dB < 11:1

Amplitude
Measurement range
1 MW input: -31 nVrms to +7.08 Vrms
50/75W input: -137 dBM to +30 dBM
All receiver inputs can be overdriven by up to 12.3 dB above the
range setting, with some degradation performance
Displayed range
Scale: 10 division CRT vertical axis with reference level at the top graticule line
Calibration: 10, 5, 2 and 1 dB/division from the reference level
Reference level (relative to input range): -100 dB to +10 dB

Dynamic Range
Spurious response (image, out of band and harmonic distortion)
50/75W input: < -80 dB referred to a single signal equal to or less than input range
1 MW input: < -80 dB except second harmonic distortion < -70 dB
Intermodulation distortion
50/75W input: < -80 dB referred to the larger of two signals
each ³ 6 dB below input range except 2nd order IM from 10 MHz
to 40 MHz < -70 dB
1 MW input: < -70 dB
Residual responses (no signal at input): < -120 dBm using -25 dBn range
Residual phase noise (typical at 40 MHz, -10 dBm input)
5 kHz offset: -112 dBc/Hz
100 kHz offset: -120 dBc/Hz

Sweep
Modes: continuous, signal or manual
Trigger: free run, line or external
Time: 0.2 s full sweep to 200 s/Hz of frequency span (sweept time excluding auto calibration cycles)

Input
Signal inputs
50/75W: >26 dB return loss, BNC connector
1 MW: ± 3% shunted by < 30 pF, BNC connector
Maximum input level
50/75W: 13 V peak ac plus dc relay protected against overloads to 42 V peak
1 MW: 42 V peak ac plus dc (derate by factor of two for each octave above 5 MHz)
External trigger input: negative going TTL level or contact closure required to initiate sweep
External reference input: 10 MHz (or subharmonic to 1 MHz), 0 dBm minimum level

Output
Tracking generator
Level: 0 dBm to -11 dBm with a single turn knob
Frequency accuracy: ± 1 Hz relative to analyzer tuning
Frequency responce: ± 0.7 dB
Impedance: 50W; > 14 dB return loss
Probe power: + 15 Vdc, -12.6 Vdc; 150 mA max
IF: 350 kHz, -11 dBV to -15 dBV at the reference level
Video: 10 V at the reference level
Frequency reference: 10.000 MHz ± 1X10 EXP -7/month, +10 dBm into 50W

HP-IB Interface Functions
Sh1, AN1, T6, L4, SR1, RL1, TP0, DC1, DT1, C0

General specifications
Size: H 229, W 426, D 635 mm
Weight: 40 kg