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494: Difference between revisions
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title=Tektronix 494 | | title=Tektronix 494 | | ||
summary=Spectrum Analyzer 10 kHz to 21 GHz | | summary=Spectrum Analyzer 10 kHz to 21 GHz | | ||
image= | image=Tek 494P 1.jpeg | | ||
caption=Tektronix 494 | | caption=Tektronix 494 | | ||
introduced=1985 | | introduced=1985 | | ||
discontinued= | discontinued=1989 | | ||
manuals= | manuals= | ||
* [[Media:070-4418-00.pdf| Tek 494 & 494P Operator Manual (PDF)]] | * [[Media:070-4418-00.pdf| Tek 494 & 494P Operator Manual (PDF)]] | ||
* [[Media:070-4415-00.pdf| Tek 494P Programmer Manual (PDF)]] | * [[Media:070-4415-00.pdf| Tek 494P Programmer Manual (PDF)]] | ||
* [ | * [http://www.ko4bb.com/manuals/71.205.222.87/494psmv1_sm.pdf Tek 494 & 494P Service Manual Volume 1 (PDF)] | ||
* [http:// | * [http://www.ko4bb.com/manuals/71.205.222.87/494psmv2_sm.pdf Tek 494 & 494P Service Manual Volume 2 (PDF)] | ||
}} | }} | ||
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{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Frequency Range | | {{Spec | Frequency Range | | ||
* | * 10 kHz to 1.8 GHz | ||
* External Waveguide mixers: | * 1.7 GHz to 5.5 GHz | ||
{{Spec | Frequency Span Range (plus 0 Hz and MAX) | | * 3 GHz to 7.1 GHz | ||
{{Spec | Resolution Bandwidth Range (-6 dB bandwidth) | | * 5.4 GHz to 18 GHz | ||
* 15 GHz to 21 GHz | |||
* [[WM490|External Waveguide mixers:]] 18 GHz to 325 GHz }} | |||
{{Spec | Frequency Span Range (plus 0 Hz and MAX) | 50 Hz/Div to 500 MHz/Div in 1, 2, 5 sequence }} | |||
{{Spec | Resolution Bandwidth Range (-6 dB bandwidth) | 30 Hz, then 100 Hz to 1 MHz 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 + | {{Spec | Reference Level Range | -117 dBm to +40 dBm }} | ||
{{Spec | Sweep Speed Range | 10 sec/div to 20 µs/div in 1, 2, 5 sequence }} | {{Spec | Sweep Speed Range | 10 sec/div to 20 µs/div in 1, 2, 5 sequence }} | ||
{{Spec | Video Bandwidth | {{Spec | Video Bandwidth Filter | | ||
* Normal | |||
* Wide 1/30 of resolution bandwidth | |||
* Narrow 1/300 of resolution bandwidth}} | |||
{{Spec | Triggering Modes | Free Run, Line, Video, Single, External }} | {{Spec | Triggering Modes | Free Run, Line, Video, Single, External }} | ||
{{Spec | Display Dynamic Range | 80 dB }} | |||
{{Spec | Display Dynamic Range | | |||
{{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; | {{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; [[015-0385-00|Diplexer Assembly]]; Power Cord; spare fuses; CRT filter set consisting of amber and gray light filters plus mesh filter }} | ||
{{Spec | Weight | | {{Spec | Weight | 24 kg (52 lbs) with standard accessories }} | ||
{{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 }} | ||
{{Spec | Operating Atmospherics | Temperatures: -15 °C to +55 °C; Humidity: Five cycles (120 hours) MIL-STD-810; Altitude: Up to 4.6 km (15,000 ft) }} | {{Spec | Operating Atmospherics | Temperatures: -15 °C to +55 °C; Humidity: Five cycles (120 hours) MIL-STD-810; Altitude: Up to 4.6 km (15,000 ft) }} | ||
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==Options== | ==Options== | ||
* Opt. | * Opt. 08: Delete external Mixer capability | ||
* Opt. 21: High performance 18 to 40 GHz WM490 Series Waveguide Mixer Set | * Opt. 12: Help mode text in English + German | ||
* Opt. 22: Same as Opt. 21 plus | * Opt. 13: Help mode text in English + French | ||
* Opt. | * Opt. 14: Help mode text in English + Spanish | ||
* Opt. | * Opt. 20: General Purpose 12.4-40 GHz Waveguide Mixer Set | ||
* Opt. 21: High performance 18 to 40 GHz [[WM490]] Series Waveguide Mixer Set | |||
* Opt. | * Opt. 22: Same as Opt. 21 plus [[WM490]]U (40-60 GHz) Waveguide Mixer | ||
* Opt. 41: | * Opt. 30: Rackmount with front panel I/O | ||
* Opt. 42: Replaces MARKER/VIDEO input port on the rear panel with a 110 MHz IF output port that provides a | * Opt. 31: Rackmount with rear panel I/O | ||
* Opt. 32: Benchmount | |||
* Opt. 41: Digital Microwave Radio Measurement Enhancement package: Provides wider bandwidth preselector, 30Hz video filter with 100 kHz resolution bandwidth and a 5 MHz/Div span. | |||
* Opt. 42: Replaces MARKER/VIDEO input port on the rear panel with a 110 MHz IF output port that provides a 6 dB signal bandwidth ≥ 5 MHz | |||
* Opt. 45: MATE/CIIL language interface | * Opt. 45: MATE/CIIL language interface | ||
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<gallery> | <gallery> | ||
Tek 494P 1.jpeg | Tek 494P 1.jpeg | ||
Tek 494 internal top.jpg|Internal top view | Tek 494 internal top.jpg|Internal top view | ||
Tek 494 internal bottom.jpg|Internal bottom view | Tek 494 internal bottom.jpg|Internal bottom view | ||