492: Difference between revisions

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492 (view source)

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The single and delta markers provide direct readout of frequency and amplitude information of any point along any displayed trace.  Or, get the relative (delta) frequency and amplitude information between any two points along any displayed trace or between traces.
The single and delta markers provide direct readout of frequency and amplitude information of any point along any displayed trace.  Or, get the relative (delta) frequency and amplitude information between any two points along any displayed trace or between traces.


Additional features include: Continuous Resolution Frequency Tuning, Up to 90 dB Viewable Dynamic Range, Built-in Frequency Counters Provide Frequency Determination to within 0.0000001%, Sensitivities to -134 dBm, Built-in Intelligence for Signal Processing/Marker Functions, Push Button Occupied-Bandwidth/Noise Normalization Functions, Macro Capability with Nonvolatile Memory, Optional Switch-Selectable 50/75Ω Impedances, GPIB Programming with Tek Codes and Formats for Standardized Bus Operation, and optional MATE/CIIL Compatibility for Military Applications.
Additional features include continuous resolution frequency tuning, up to 90 dB viewable dynamic range, built-in frequency counters, sensitivities to -134 dBm, built-in intelligence for signal processing/marker functions, push button Occupied-Bandwidth/Noise Normalization functions, macro capability with nonvolatile memory, optional switch-selectable 50/75Ω impedances, GPIB Programming, and optional MATE/CIIL Compatibility for military applications.


Front panel inputs/outputs are: RF INPUT 50Ω [[N connector]] (Input connector for RF signals to 21 GHz.  If input signal has a dc component use a blocking capacitor in line with the signals); CAL OUT [[BNC connector]] (Calibrator output provides -20 dBm 100 MHz signal and a comb of frequency markers 100 MHz apart); 1ST LO OUTPUT [[SMA connector]] (Provides access to the output of the 1st local oscillator.  Must be terminated into 50 Ω when they are not connector to an external device); 2ND LO OUTPUT [[SMA connector]] (Provides access to the output of the 2nd local oscillator.  Must be terminated into 50 Ω when they are not connector to an external device); EXTERNAL MIXER RF INPUT [[TNC connector]] (50Ω); and Camera Power.
Rear panel inputs/outputs are: PROBE POWER (Provides operating voltages (+5V, -15 V, +15 V; 100 mA max each) for active probes); HORIZ|TRIG (EXT IN) [[BNC connector]] (A dual function connector: When in External Triggering mode the connector is an AC coupled input for trigger signals.  When the TIME/DIV selection is EXT the connector is a DC coupled input for horizontal sweep voltages); MARKER/VIDEO (OUTPUT) (B053575 AND UP) or EXT PRESELECTOR (OUTPUT) (B053574 and below) [[BNC connector]] (MARKER/VIDEO interfaces the 492/492P with a TV Sideband Adapter, such as the Tek 1405, so a marker from the adapter is displayed on the internal video.  External video applied to this connector will also be displayed if pin 1 of the ACCESSORIES connector is grounded.  EXT PRESELECTOR provides a variable voltage (approx -0.2 V to +10 V) that is proportional to center frequency, for preselector bands of Opt. 01 instruments, to drive an external preselector.); Opt. 42 replaces MARKER/VIDEO (OUTPUT) with 110 MHz IF (OUTPUT) [[BNC connector]] (Provides 3 dB signal bandwidth ≥ 4.5 MHz); HORIZ (OUTPUT) [[BNC connector]] (Supplies a 0.5 V/div horizontal signal); VERT (OUTPUT) [[BNC connector]] (Provides access to the video signal with 0.5 V for each division of displayed video above or below the center line.); PEN LIFT (OUTPUT) [[BNC connector]] (Provides access to a TTL compatible signal to lift the pen of a chart recorder during sweep retrace.  In Opt. 42 instruments this port may also be used for inputting external video, if pin 1 of the ACCESSORIES connector is ground); use this connector to input external video signals if pin 1 of the ACCESSORIES connector is grounded); 10 MHz IF (OUTPUT) [[BNC connector]] (Provides access to the output of the 10 MHz IF); J104 ACCESSORY (B053575 AND UP) female [[DB25 connector]] (Provides bidirectional access to the instrument bus.  For instruments B053574 and below, this connector has no application.); IEEE STD 488 PORT [[GPIB interface]] (Added to all "P" suffixed instruments)
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<div style='text-align: center;'>Specifications based on final published documentation, unless otherwise specified.</div>
{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Frequency Range |  
{{Spec | Frequency Range |  
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{{Spec | Resolution Bandwidth Range (-6 dB bandwidth) | 492BP: 100 Hz to 3 MHz; 492PGM: 1 kHz to 3 MHz; both in decade steps }}  
{{Spec | Resolution Bandwidth Range (-6 dB bandwidth) | 492BP: 100 Hz to 3 MHz; 492PGM: 1 kHz to 3 MHz; both in decade steps }}  
{{Spec | RF Input impedance | 50Ω }}
{{Spec | RF Input impedance | 50Ω }}
{{Spec | Maximum Safe Input Power | CW: +30 dBm (1 W); Pulse: 75 W Pk (1 µS pulse, 0.1% duty factor) }}
{{Spec | Maximum Safe Input Power | CW: +30 dBm (1 W); Pulse: 75 W Pk (1 µS pulse, 0.1% duty factor) }}
{{Spec | RF Attenuator Range | 0 dB to 60 dB, 10 dB steps }}
{{Spec | RF Attenuator Range | 0 dB to 60 dB, 10 dB steps }}
{{Spec | Reference Level Range | -117 dBm to +30 dBm }}  
{{Spec | Reference Level Range | -117 dBm to +30 dBm }}  
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{{Spec | Video Bandwidth Range | 492BP: 0.3 Hz to 30 kHz; 492PGM: 3 Hz to 30 kHz }}  
{{Spec | Video Bandwidth Range | 492BP: 0.3 Hz to 30 kHz; 492PGM: 3 Hz to 30 kHz }}  
{{Spec | Triggering Modes | Free Run, Line, Video, Single, External }}
{{Spec | Triggering Modes | Free Run, Line, Video, Single, External }}
{{Spec | Displayed Average Noise | −30 dBm to −131 dBm }}
{{Spec | Displayed Average Noise | −30 dBm to −131 dBm }}
{{Spec | Display Dynamic Range | 492BP: 90 dB; 492PGM: 80 dB }}  
{{Spec | Display Dynamic Range | 492BP: 90 dB; 492PGM: 80 dB }}  
{{Spec | Calibrator (Cal out) | 50Ω, -20 dBm ±0.3 dB at 100 MHz }}
{{Spec | Calibrator (Cal out) | 50Ω, -20 dBm ±0.3 dB at 100 MHz }}
{{Spec | Included Accessories | Operator’s Manual; Programmer Manual; 6-ft 50Ω coaxial cable N-N; 18-inch 50Ω coaxial cable BNC-BNC; N male to BNC female adapter; rear connector shield; Power Cord; spare fuses; CRT filter set consisting of amber and gray light filters plus mesh filter, 492PGM includes gray CRT filter (no filter set) }}
{{Spec | Included Accessories | Operator’s Manual; Programmer Manual; 6-ft 50Ω coaxial cable N-N; 18-inch 50 Ω coaxial cable BNC-BNC; N male to BNC female adapter; rear connector shield; Power Cord; spare fuses; CRT filter set consisting of amber and gray light filters plus mesh filter, 492PGM includes gray CRT filter (no filter set) }}
{{Spec | Weight | 492BP: 21.76 kg (47 lbs) 492PGM: 21.3 kg (46 lbs) }}  
{{Spec | Weight | 492BP: 21.76 kg (47 lbs) 492PGM: 21.3 kg (46 lbs) }}  
{{Spec | Power | 90 − 132 V<sub>AC</sub>, 48 to 440 Hz; 180 – 250 V<sub>AC</sub>, 48 to 440 Hz.  At 115 V<sub>AC</sub>, 60 Hz, 210 W max }}
{{Spec | Power | 90 − 132 V<sub>AC</sub>, 48 to 440 Hz; 180 – 250 V<sub>AC</sub>, 48 to 440 Hz.  At 115 V<sub>AC</sub>, 60 Hz, 210 W max }}
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* [[016-0631-01|Waveguide Mixers for 492 and 7L18]]
* [[016-0631-01|Waveguide Mixers for 492 and 7L18]]
* [https://www.youtube.com/watch?v=tKC24SpHTSY YouTube: Tektronix 492 and 496 Portable Spectrum Analyzers]
* [https://www.youtube.com/watch?v=tKC24SpHTSY YouTube: Tektronix 492 and 496 Portable Spectrum Analyzers]
==Connections==
Front panel inputs/outputs are:
* RF INPUT, 50 Ω [[N connector]] (Input connector for RF signals to 21 GHz.  If input signal has a DC component use a blocking capacitor in line with the signals);
* CAL OUT [[BNC connector]] (Calibrator output provides -20 dBm 100 MHz signal and a comb of frequency markers 100 MHz apart)
* 1ST LO OUTPUT [[SMA connector]] (Provides access to the output of the 1st local oscillator.  Must be terminated into 50 Ω when not connected)
* 2ND LO OUTPUT [[SMA connector]] (Provides access to the output of the 2nd local oscillator.  Must be terminated into 50 Ω when not connected)
* EXTERNAL MIXER RF INPUT [[TNC connector]] (50Ω); and Camera Power.
Rear panel inputs/outputs are:
* PROBE POWER (Provides operating voltages (+5V, -15 V, +15 V; 100 mA max each) for active probes)
* HORIZ|TRIG (EXT IN) [[BNC connector]] (A dual function connector: When in External Triggering mode the connector is an AC coupled input for trigger signals.  When the TIME/DIV selection is EXT the connector is a DC coupled input for horizontal sweep voltages)
* MARKER/VIDEO (OUTPUT) (B053575 AND UP) or EXT PRESELECTOR (OUTPUT) (B053574 and below), [[BNC connector]] (MARKER/VIDEO interfaces the 492/492P with a TV Sideband Adapter, such as the Tek 1405, so a marker from the adapter is displayed on the internal video.  External video applied to this connector will also be displayed if pin 1 of the ACCESSORIES connector is grounded.  EXT PRESELECTOR provides a variable voltage (approx -0.2 V to +10 V) that is proportional to center frequency, for preselector bands of Opt. 01 instruments, to drive an external preselector.)
* Opt. 42 replaces MARKER/VIDEO (OUTPUT) with 110 MHz IF (OUTPUT) [[BNC connector]] (Provides 3 dB signal bandwidth ≥ 4.5 MHz); HORIZ (OUTPUT), [[BNC connector]] (Supplies a 0.5 V/div horizontal signal);
* VERT (OUTPUT), [[BNC connector]] (Provides access to the video signal with 0.5 V for each division of displayed video above or below the center line.);
* PEN LIFT (OUTPUT), [[BNC connector]] (Provides access to a TTL compatible signal to lift the pen of a chart recorder during sweep retrace.  In Opt. 42 instruments this port may also be used for inputting external video, if pin 1 of the ACCESSORIES connector is ground); use this connector to input external video signals if pin 1 of the ACCESSORIES connector is grounded);
* 10 MHz IF (OUTPUT) [[BNC connector]] (Provides access to the output of the 10 MHz IF);
* J104 ACCESSORY (B053575 AND UP) female [[DB25 connector]] (Provides bidirectional access to the instrument bus.  For instruments B053574 and below, this connector has no application.);
* IEEE STD 488 PORT [[GPIB interface]] (Added to all "P" suffixed instruments)


==Pictures==
==Pictures==
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/52962"

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