valutazioni - 2, GPA: 3
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Facilità d'uso
Disk drive Data, instrument states, user graphics, data plots and test sequences can be stored on internal floppy disk in MS-DOS® or Agilent’s standard LIF formats. Data Hardcopy Data plotting Hardcopy plots are automatically produced with HP-GL compatible digital plotters. The 8753ET/ES provides Centronics, RS-232C, and GPIB interfaces. Data listings Printouts of instrument data are directly produced with a printer such as the HP DeskJet or LaserJet. Select black & white or color print. For a list of compatible printers, consult our printer compatibility guide Web page at Configure plots Configure plots completely from the network analyzer by defining pen color and line type for data, text markers, graticules, and memory traces. Functions Plot trace(s), graticule(s), marker(s), or text including operating and system parameters. Quadrants Plot entire display in one of four different quadrants of the plotter paper. System Capabilities Limit lines Define test limit lines that appear on the display for go/no go testing. Lines may be any combination of horizontal, sloping lines, or discrete data points. Limit-test TTL output available for external control or indication. External source mode The receiver (input R) detects and phase-locks to any externally generated CW signal. Receiver inputs A and B will measure this same frequency for comparison or tracking measurements. Automatic: The input signal frequency is counted and displayed. Manual: Measures the input signal closest to the frequency specified by the user (within +0.5 to +5 MHz). Tuned receiver Tunes the receiver for a synthesized CW input signal at a precisely specified frequency. The time bases of the external RF source or sources must be tied to the external reference input (rear panel BNC). The built-in RF source is not used. Frequency offset on/off Sets the RF source to be swept at a fixed offset frequency above the receiver as required in a swept RF/IF, fixed LO, mixer test. Service menu Select the desired service test, service diagnostic, service or verification mode. Test Sequences Description Create, edit, save, or recall a series of front-panel keystrokes to automate a measurement. Test sequences may contain basic stimulus and measurement functions (frequency, power, parameter, format, scale) advanced operations (time domain, limit testing, display marker values) and basic logical branching (IF limit test fails DO sequence 5 or GOSUB). Storage Test sequences can be stored internally to a disk drive and can be loaded from a computer over the GPIB interface. Sequence 6 is saved in nonvolatile storage and can be used as an autostart routine when titled AUTO. General purpose input/output Read or write bits to the output port to control external devices such as part handlers. Eight output and five input TTL lines are available on the parallel port. Other functions PAUSE/continue, wait, title sequence, print sequence, duplicate sequence, pause, and select. Time-domain (Option 010) With the time-domain option, data from transmission or reflection measurements in the frequency domain are converted to the time domain using a Fourier transformation technique (chirp Z) and presented on the display. The time-domain response shows the measured parameter value versus time. Markers may also be displayed in electrical length (or physical length if the relative propagation velocity is entered). Time stimulus modes Two types of time excitation stimulus waveforms can be simulated during the transformations, a step and an impulse. • Low-pass step This stimulus, similar to a traditional time- domain reflectometer (TDR) stimulus waveform, is used to measure low-pass devices. The frequency-domain data should extend from DC (extrapolated value) to a higher value. • Low-pass impulse This stimulus is also used to measure low-pass devices. • Bandpass impulse The bandpass impulse stimulates a pulsed RF signal (with an impulse envelope) and is used to measure the time-domain response of band- limited devices. Windows The windowing function can be used to modify (filter) the frequency-domain data and thereby reduce overshoot and ringing in the time-domain response. Three types of windows are available: minimum, normal, and maximum. Gating The gating function can be used to selectively remove reflection or transmission time-domain responses. In converting back to the frequency- domain the effects of the responses outside the gate are removed. Remote Programming Interface GPIB interface operates to IEEE 488-1978 and IEC 625 standards and IEEE 728-1982 recommended practices. Addressing The GPIB address can be verified or set from the front panel via the local menu and can range from 0 to 30 decimal (factory set at 16). Pass control Allows the 8753ET/ES to request control of the GPIB (when an active controller is present) whenever it needs to output to a plotter or printer. System controller Lets an 8753ET/ES become a controller on the GPIB to directly...
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