Agilent 8568B RF Spectrum Analyzer 100 Hz to 1.
Make Precise Measurements Outstanding performance A sophisticated phase lock system combines “synthesizer-like” tuning and frequency accuracy with superior local oscillator spectral purity to make narrow resolution bandwidths practical at RF frequencies and virtually eliminate long-term drift. This system is administered by an internal microcomputer which also makes possible powerful operational features described in later pages.
Make Precise Measurements – continued Resolution bandwidth Single sideband phase noise Dynamic range 10 Hz to 3 MHz resolution bandwidths are used in a 1, 3, 10 sequence. An appropriate bandwidth is always available to provide proper resolution for any frequency span. Single sideband phase noise is > 80 dB below the peak of a CW signal at frequency offsets > 30 times the resolution bandwidth setting, for resolution bandwidths < 300 Hz.
Get Acquainted Fast Easy-to-use front panel The front panel concept of the Agilent 8568B is innovative in two respects: a comprehensive CRT readout that puts all the information where a user needs it, and interactive function and data controls that make setting function values very convenient. Step keys Step keys increment or decrement function values have a logical amount, depending upon the functions selected and the display scaling.
Get Acquainted Fast – continued Front panel softkeys Make your own front panel functions by defining softkeys, up to 58 characters in length, directly from the front panel. Any analyzer command can be put into a softkey, including program flow commands such as REPEAT and UNTIL, and new firmware commands such as PEAKS. You can even define a softkey that will execute other softkeys.
Complete Your Measurements Quickly and Easily Operator-oriented features It’s easy to operate the 8568B. It takes only a few functions to make a basic signal measurement, and there are many functions available that make sophisticated measurements as easy to perform as simpler ones. Basic operation To start Press either the [0 to 1.5 GHz] or [INST PRESET] keys to view the desired frequency range. Both spans set all the control states to convenient preset values (e.g.,0 to 1.
Complete Your Measurements Quickly and Easily – continued Direct plotter output All trace, graticule, and annotation information displayed on the CRT can be plotted without the aid of a controller. Simply connect the plotter via GP-IB to the 8568B (set plotter address to 705) and press the LOWER LEFT key on the front panel. Marker-aided measurements The tunable marker makes basic signal measurements easily and accurately by measuring signals directly.
Simplify Your Signal Analysis Measurement aids Amplitude and frequency offset Peak search and signal track Noise density measurement The amplitudes and frequencies displayed on the CRT can be offset by any desired amount. This function can normalize amplitudes and frequencies to a standard, such as a pilot tone, or reflect a signal's parameters prior to amplification or frequency conversion.
Simplify Your Signal Analysis – continued Trace functions You can easily manipulate the way trace information is processed and displayed by the 8568B. Using commands MPY (Multiply) and COMPRESS, traces can be scaled in amplitude and compressed so more than one trace can be independently displayed. Other trace processing functions, such as MEAN, RMS, and STDEV, compute inside the analyzer the mean, RMS, and standard deviation of trace amplitudes.
Get Results, Mot Just Data, Using High-Level Signal and Trace Processing Tools The built-in, high-level functions of the 8568B provide signal and trace processing tools that increase measurement capability and speed the development of measurement programs. Signal processing tools such as PWRBW (finds the power bandwidth of a signal) and PEAKS (identifies nil responses on the display) allow data processing to be performed by the analyzer without an external computer.
Create "On-Board" Measurement Routines Softkey programming lets you develop the analyzer's measurement “personality” by allowing you to create custom firmware functions for your measurement needs. As described earlier, softkeys can be defined from the front panel. However, the following example illustrates how an operator can us a computer to create longer or more complex measurement routines within a program and then transfer all the data commands to the analyzer’s non-volatile RAM.
Combine Processing Tools and Softkeys to Solve Complex Measurement Tasks Here are a few examples of measurements that can be be performed by programs stored in the analyzer’s RAM. Broadband monitoring Percent modulation analysis Harmonic distortion Define a softkey that will continuously monitor multiple bands of interest and execute a fast sort on signals. Include a command to zoom in on a desired signal for more detailed analysis. Such is softkey is ideal for site monitoring and surveillance.
Automatic Test System The 8568B + PC = unparalleled measurement capability Combine softkey routines with system software to save I/O time and give you the power of distributed processing. Softkey routines can perform measurement tasks measurement tasks and process data inside the analyzer to help minimize program run times. Enhance your program development with the 85863A BASIC subprogram library.
EMI Measurement Capability • The ideal EMI diagnostic tool • Measurement software for fully automated EMI testing • The Agilent 85685A RF preselector converts the Agilent 8568B/85650A into a CISPR receiver • Accessories available for making complete EMI test systems International Special Des Perturbations Radioélectriques) publication number 16 recommendation. The preselector provides overload protection and improves measurement sensitivity.
Specifications Performance summary Specifications describe the instrument's warranted performance over the temperature range 0° to 55 °C (except where noted.) Supplemental characteristics are intended to provide information useful in applying the instrument by giving typical, but non-warranted, performance parameters. These are denoted as "typical," "nominal," or "approximately." Where specifications are subject to minimization with the error correction routine, corrected limits are given unless noted.
Specifications See definition of specifications and supplemental characteristics on page 16. Frequency Bandwidth selectivity 60 dB/3 dB bandwidth ratio: < 15:1 3 MHz to 100 kHz < 13:1 30 kHz to 10 kHz < 11:1 3 kHz to 30 Hz 60 dB points on 10 Hz bandwidth are separated by < 100 Hz. Bandwidth shape Synchronously tuned (approximately Gaussian). Measurement range 100 Hz to 1500 MHz through two RF inputs: 100 Hz to 1500 MHz dc coupled and 100 kHz to 1500 MHz ac coupled.
Specifications See definition of specifications and supplemental characteristics on page 16. The marker must be positioned at least 20 dB above the noise or the intersection of the signal with an adjacent signal and more than four divisions up from the bottom of the CRT. Counter resolution is normally a function of frequency span but may be specified directly using SHIFT =. Accuracy: For spans < 100 kHz: frequency reference accuracy x displayed frequency ±2 x frequency counter resolution.
Specifications See definition of specifications and supplemental characteristics on page 16. Frequency response (flatness) uncertainty ≥ 10 dB RF Attenuation Input 1: ±1dB, 100 Hz to 500 MHz; ± 1.5 dB 100 Hz to 1500 MHz. Typically: ±0.75 dB 100 Hz to 500 MHz; ±1.0 dB 100 Hz to 1500 MHz; +1, –4 dB 1500 MHz to 1650 MHz. Input 2: ±1 dB, 100 kHz to 1500 MHz. Typically: ±0.7 dB 100 kHz to 1500 MHz; +1, –4 dB 1500 MHz to 1650 MHz.
Specifications See definition of specifications and supplemental characteristics on page 16. To establish a particular spurious-free dynamic range (in the coupled attenuator mode), the input mixer drive level is specified using SHIFT, (comma) and the desired level is entered through the keyboard. Residual responses (no signal at input) < –105 dBm for frequencies > 500 Hz with 0 dB input attenuation. Gain compression < 0.5 dB for signal levels < –10 dBm at the input mixer.
Specifications See definition of specifications and supplemental characteristics on page 16. Input attenuator 0 to 70 in 10 dB steps. Damage level: +30 dBm (1 watt). External sweep trigger input (rear panel) Must be > 2.4 volts (5 volt max). 1 kΩ nominal input impedance. External frequency reference input (rear panel) Must equal 10 MHz ±50 Hz, 0 dBm (+10 dBm max.), 50 Ω nominal input impedance. Analyzer phase noise performance may be degraded when an external frequency reference is used.
Specifications See definition of specifications and supplemental characteristics on page 16. NOTE: Dimensions in millimetres and (inches) (Allow 100 mm, 4 inch clearance at rear panel for interconnect cables.) Power requirements 400 Hz ±10% line frequency; 100 or 120 volts (+5%, –10%) line voltage; 50 to 60 Hz power line frequency for service only, not for extended periods. Temperature range (operating) 0 ° to 55 °C. Restricted to 0 ° to 35 °C, 50 Hz to 60 Hz.
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