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HP Hewlett Packard 8557A Spectrum Analyzer OSCILLOSCOPE Hp 8557A Spectrum Analyzer .01-350mhz This item is in great shape and it looks to be functional though we have no way to test it. It powers up fine. The 8557A is a 10kHz to 350 MHz spectrum analyzer plug-in for use with the 853A or 180-series display. The high performance and convenient operation of this economical unit is ideally suited for a variety of applications in production, R&D or field service measurements Preset the 8557A to the color-coded, "basic-operation" settings, and use the coupled controls to make most measurements in three easy steps. Tune to the signal; the LED readout displays its frequency. Zoom-in on the signal by reducing the span width; the resolution bandwidth, video filter, and sweeptime automatically change to an optimum value for a calibrated display. Then, change the reference level to bring the peak of the signal to the top of the screen for the most accurate amplitude measurement. Absolute Amplitude Calibration Signal levels can be read directly from the CRT in dBm (dBmV for Option 002) without the use of external standards or calculations. The signal level represented by the top CRT graticule line is always indicated by the reference level control, and vertical scale factors of 10 dB/div, 1 dB/div or linear can be selected. Two options are available which allow measurements in 75 O systems. Option 001 has 75 O impedance, but retains the dBm power calibration. Option 002 is also 75 O, but the amplitude is calibrated in dBmV for measurements on systems such as CATV. Displays the amplitude and frequency of each component of an input signal on a CRT ? Display gives quantitative information often not available from a conventional oscilloscope ? Calibrated to measure signals from +20 dBm to -117 dBm ? 0.01 MHz to 350 MHz frequency range ? Complete measuring system includes the 8557A Spectrum Analyzer plugged into a 180-Series or 853A Mainframe displays entire spectrum, 0.01 to 350 MHz 5 kHz to 20 MHz/div in a 1, 2, 5 sequence analyzer functions as a manually tuned receiver ± (3 MHz + 10% of frequency span per division) ± 10% of displayed frequency separation eight selectable resoltion (3-dB) bandwidths from 1 kHz to 3 MHz in a 1, 3 sequence. Bandwidth and frequency span are independently variable or may be coupled for optimum display when control markers are aligned. 3-dB points are ± 20% (+10° to +40°C) (60-dB/3-dB bandwidth ratio) < 15:1 75 dB down, > 50 kHz from center of CW signal with 1 kHz resolution bandwidth and full video filtering typically <1 dB for -1 dBm signal, 0 dB input attenuation <-107 dBm with 10 kHz resolution bandwidth, 0 dB input attenuation, and maximum (MAX) video filtering 70 dB with 10 dB/div scale; 8 dB with 1 dB/div scale 8 divisions with linear (LIN) amplitude scale -30 dBm ± 1 dB (into 50 O), 250 MHz ± 50 kHz 10 dB steps and a 12 dB vernier for calibrated adjustment from -112 dBm to +40 dBm Bandwidth Switching (Amplitude Variation) ± 0.1 dB/dB from Reference Level > 70 dB below a -40 dBm signal (>1 MHz) with 0 dB input attenuation; > 60 dB below for signals 20 kHz to 1 MHz Third Order Intermodulation Distortion > 70 dB below two -40 dBm input signals (>1 MHz) separated by ~ 50 kHz and with 0 dB input attenuation; > 60 dB below for signals 10 kHz to 1 MHz > 70 dB below a -40 dBm input signal (>1 MHz) with 0 dB input attenuation; > 60 dB below for signals 20 kHz to 1 MHz < -100 dBm with 0 dB input attenuation and no signal present at input sweeptime is automatically adjusted to maintain absolute amplitude calibration for any combination of frequency span, resolution bandwidth, and video filter bandwidth 0.1 msec to 10 sec/div in 1, 2, 5 sequence with ± 10% typical accuracy Spectrum Analyzer may be swept manually in either direction with front panel control 50 O nominal; type BNC female connector typically < 1.5 with 10 dB input attenuation + 15 V, -12.6 V, and GND (150 mA max). Use HP 1120A, 1121A, or 1124A high impedance probes. BNC output (50 O) provides detected video from 0 to 0.8 V for 8 divisions deflection on CRT display BNC output provides 0V pen down/unblanking signal at low impedance; 15 V penlift/blanking at 10 kO impedance BNC output (50 O) provides a signal which is proportional to the RF input. Level is about -10 dBm (into 50 O) with a signal displayed at the Reference Level. Output is controlled by settings of Resolution BW, Input Atten, and Reference Level. BNC output (5 kO) provides horizontal sweep from -5 V to +5V for full 10 division CRT horizontal deflection. This is a great chance to pick up this vintage item. We are offering it up with a low starting price and no reserve. Sellers On Wheels are a team of expert appraisers who provide Trading Assistant services to the greater Los Angeles/Southern California area. Copyright © 2006 Sellers On Wheels (We do not proofread any ads submitted by members) |
p_higgins@desmoines-classifieds.com (Paula Higgins) for more information. Your emails will be instantly forwarded to the poster's private address.
