TEK 490
Contents
1. 18 GHz to 21 GHz 50 kHz to 2 5 GHz 2 5 GHz to 60 GHz 6 0 GHz to 18 0 GHz 18 0 GHz to 21 0 GHz 1 At Type N female connector to internal mixer Input Level Optimum Mixer Level for Minimum Distortion Linear Operation 30 dBm mini mum distortion control setting 1 dB gain compres sion 23 dBm Optimum Mixer Level for Minimum Noise Dis play Dynamic Range Enhanced Operation 20 dBm minimum noise control setting 1 dB gain compression 18 dBm External Reference Frequency 1 MHz 2 MHz 5MHz or 10MHz 5ppm minimum Waveshape Sinewave ECL TTL duty cycle 40 60 Input Impedance 50Qac 500Qdc Power 15 dBm to 15dBm Maximum Safe Input Level RF Attenuation at Zero dB 30dBm 1 W continuous 75W peak for 1 ws or less pulse width and 0 001 maxi mum duty factor attenuation limit DC must never be applied to RF input OUTPUT SIGNAL For details see page 158 IEEE Standard 488 1978 Interface Function Subsets Implemented 494P Source Hand shake SH1 Acceptor Handshake AH1 Talker T5 Listener L3 Service Request SR1 Remote Local RL1 Parallel Poll PP1 Device Clear DC1 Device Trigger DT1 Controller CO GENERAL CHARACTERISTICS For details see page 159 ENVIRONMENTAL Per MIL T 28800C Type ll Class 3 StyleC For Details see page 159 ORDERING INFORMATION 494 Spectrum Analyzer 42 175 Includes Diplexer assembly 015 0385 00 6ft N to N connector 50 coax cabl2. Mid Harmonic Ave Noise Level Counter Sensitivity to 100 MHz Point Between Frequency Range Number for 1 kHz Res BW Minimum Res BW With 10 dB Attn Two Extremes 18 0 GHz 26 5 GHz 100dBm 91dBm 6 0 dB 2 0dB WM 490K 26 5 GHz 40GHz 10 96dBm 86 dBm 6 0 dB 2 0 dB WM 490A 33 GHz 50 GHz 10 95 dBm 86 dBm 6 0 dB 20 dB WM 490Q 40 GHz 60GHz 10 95dBm 86dBm 6 0 dB 25 dB WM 490U 50 GHz 75 GHz 15 6 0 dB 3 0 dB WM 490V 50 GHz 95 dBm 86dBm 75 GHz 90dBm 81dBm 60 GHz 90 GHz 15 6 0 dB 3 0 dB WM 490E 60 GHz 95dBm 89dBm 90 GHz 85dBm 79dBm 75 GHz 110 GHz 23 6 0 dB 3 0 dB WM 490W 75 GHz 90dBm 84 dBm 110 GHz 80dBm 74dBm 90 GHz 140 GHz 23 6 0 dB 3 0 dB WM 490F 90 GHz 85dBm 79dBm 140 GHz 75dBm 69 dBm 110 GHz 170 GHz 37 6 0 dB 3 0 dB WM 4 110GHz 80 dBm 74dBm 170GHz 70dBm 64dBm 140 GHz 220 GHz 3z 6 0 dB 3 0 dB WM 490G 140 GHz 75dBm 69dBm 220 GHz 65 dBm 59dBm 220 GHz 325 GHz 56 6 0 dB 3 0dB 119 1728 00 220 GHz 66dBm 50dBm 325 GHz 50dBm 35 dBm Typical values and with frequency response indicated over any 5 GHz range 490 SERIES TEK 10 kHz to 325 GHz PORTABLE SPECTRUM ANALYZERS AMPLITUDE RELATED Reference Level Range Full Screen Top of Graticule 117 dBm to 40 dBm 40 dBm includes maximum safe input of 30 dBm and 10 dB gain of IF gain reduction for 10 dB div and 2 dB div log
3. manual to programmable convertibility and environ mentalization per MIL T 28800C Type Ill Class 3 Style C An exclusive pushbutton HELP mode makes the 494 accessible to operators of widely varying skills and experience At the touch of a button or twist of a knob the 494 tells you what to expect from nearly every control in plain English Plus optional French German or Spanish Pull out refer ence cards supply an additional level of de tail Having answers available at your finger tips minimizes training time and reduces complexity Center Frequency Span Division Ampli tude Scaling and Reference Level Se lected Either by P Aided Three Knob Operation or Direct Pushbutton Entry In pushbutton mode variables can be set to nonstandard values i e 7 dB div vertical mode or 9 2 kHz div frequency span PROGRAMMAR E gt SPECTRUM ANALYERR 494 Nonvolatile memory retains up to ten set ups and nine displays for rapid measure ments and easy data comparison One memory location stores on screen settings to quickly bring the analyzer back if power is turned off The fully programmable 494P provides easy to implement automated measure ments The 494P is straightforward to inter face to our GPIB controllers or yours If you want to free your controller but still get graphics output a convenient front panel PLOT button will send display data to a plotter Now increase your A
4. sweep time Bands 1 and 5 12 with span div lt 200 kHz and Bands 2 4 with span div lt 100 kHz lt 50 Hz per minute of sweep time Noise Sidebands At least 75dBc at 30 times the resolution bandwidth offset from the center frequency 70 dBc for 100 Hz resolution bandwidth or less 164 PORTABLE SPECTRUM ANALYZERS 490 SERIES so A T E T T T Z AU LAA T E T eA AA TEE E vet CIN TIN TIN TTT TTT N TUTTI TEIN A A T PESMA SRNE W AN z eNA E NEA E A N A TT eA N ON A T NA AT s A TANT N E N AE p E EES A e s S 10 Typical Low Frequency Response pin PTE MTT Hull wakes ME and Average Noise Level A ASU TT ed CT TSN o U C TTT ETT E 100 Hz 1 kHz 10 kHz 100 kHz SENSITIVITY AND FREQUENCY RESPONSE Freq Response Freq Response LO Minimum Frequency Referenced About the Mid Harmonic Ave Noise Level Counter Sensitivity to 100 MHz Point Between Frequency Range Number for 1 kHz Res BW Minimum Res BW With 10 dB Attn Two Extremes 10 kHz 1 8GHz 101 dBm 30 dB 50 kHz 1 8 GHz 110dBm 101dBm 25 dB 1 7 GHz 5 5 GHz 1 110 dBm 101dBm 3 5 dB 3 0 GHz 7 1 GHz 1 110dBm 101dBm 3 5 dB 5 4 GHz 18 0 GHz 3 45dB 5 4 GHz 12 GHz 95dBm 86 dBm 12 GHz 18 GHz 90dBm 81dBm 15 0GHz 21 0 GHz 85 dBm 65 dB WITH TEKTRONIX OPTIONAL HIGH PERFORMANCE WM 490 SERIES WAVEGUIDE MIXERS Freq Response Freq Response LO Minimum Frequency Referenced About the
5. 4 2 Calibrations 695 M1 494P 2 Calibrations 715 M2 494 2 Years Service 1 330 M2 494P 2 Years Service 1 350 M3 494 2 Years Service amp 4 Calibrations 2 725 M3 494P 2 Years Service amp 4 Calibrations 2 785 M4 _ 494 5 Calibrations 1 590 M4 494P 5 Calibrations 1 630 M5 494 9 Calibrations 2 Years Service 4 145 M5 494P 9 Calibrations 2 Years Service 4 240 OPTIONAL ACCESSORIES TR 503 Tracking Generator See page 178 6 620 Microwave Comb Generator TM 500 Series compatible Order 067 0885 00 1 800 75 Q to 50 Q Minimum Loss Pad Order 011 0112 00 70 DC Block N to N Order 015 0509 00 250 P6201 FET Probe to 900 MHz 1 220 1405 TV Sideband Adaptor 525 60 Markers See page 179 5 780 TV Trigger Synchronizer Order 015026101 450 Hard Case Transit Order 016 0658 00 750 Soft Case Order 016 0659 00 105 Rear Panel Protective Cover Order 337 327400 Lab Cart K213 See page 462 595 Camera C 5C See page 445 495 Note 490 Series spectrum analyzers are compatible with all Tektronix C 50 Series cameras PERIPHERAL PRODUCTS FOR 494P SPECTRUM ANALYZER 5 00 4041 System Controller see page 355 4 950 4207 Color Graphics Terminal see page 53 3 995 165 9 ie N 3 EE lt 5 5 Gia GPIB
6. 490 SERIES TE 10 kHz to 325 GHz PORTABLE SPECTRUM ANALYZERS 494 494P The 494P complies with IEEE Standard GPIB 488 1978 and with Tektronix Standard ueee Codes and Formats ae mea ATTENUATI N RANGE O JA BAND Built in Frequency Counter to 325 GHz HELP Manual in ROM Nonvolatile Memory Storage Keypad Data Entry Direct Plot Capability Alternate Language Options GPIB Fully Programmable 494P Full Three Year Warranty The TEK 494 and fully programmable 494P offer portability ease of use and the widest amplitude calibrated frequency range of any spectrum analyzers available 10 kHz to 21 GHz in coax and 18 GHz to 325 GHz using one or more of ten WM 490 Series waveguide mixers Counter Center Frequency Accuracy Zero Long Term Drift Superior Range and Resolution in a Compact Portable Package A 4 GHz signal can be measured to within 41 Hz with 1 Hz readout resolution 30 min utes after turn on And the 494 s zero drift will ensure long term measurement repeat ability on that frequency REFEMENCE RESOLUTION f DECHLATE DTH E f You get 30 Hz resolution bandwidth to 60 GHz 100Hz resolution bandwidth to 220 GHz and 1 kHz bandwidth to 325 GHz with excellent sensitivity and low phase noise Popular features common to other 490 Series spectrum analyzers are standard on the 494 including digital storage
7. TE capabilities with the TekSPANS general RF applications soft ware in IBM PC HP or Tek controller ver sions Automate your EMI verification testing with the NEWTekSPANS EMI software See page 173 In strong testimony of the incomparable reli ability of the 494 and 494P Tek offers the first spectrum analyzer three year warranty Beyond the first three years of warranty cov erage Tek will extend your service cover age for two years providing all your calibra tion and maintenance needs for the first five years 163 GPIB 12 co W N gt lt z lt 2 O W Q 77 V pe i ps G b gt ed gt rr lt N m pul 2 10 kHz to 325 GHz TEK The following characteristics and features apply after a 30 minute warm up period unless other wise noted FREQUENCY RELATED Center Frequency Range 10 kHz to 21 GHz standard amplitude specified coverage to 325 GHz with optional Tektronix WM 490 Series Waveguide Mixers Center Frequency Accuracy Bands 1 and 5 12 with span div gt 200 kHz and bands 2 4 with span div gt 100 kHz 20 of span div or res BW whichever is greater CF x Ref Freq Error N x 15 kHz Bands 1 and 5 12 with span div lt 200kHz and Bands 2 4 with span div lt 100 kHz 20 of span div or res BW whichever is greater CF x Ref Freq Error 2N 25 Hz Center Frequency Readout Resolution At least 10 of span div Si
8. de Mixer Set 12 4GHz to 18 GHz 18 GHz to 26 5 GHz and 26 5 GHz to 40 GHz and hardware Option 21 High Performance 18GHz to 40 GHz Waveguide Mixer Set 18GHz to 26 5 GHz and 26 5 GHz to 40 GHz and hard ware 900 2 525 Option 22 High Performance 18 GHz to 60 GHz Waveguide Mixer Set 18GHz to 26 5 GHz 26 5 GHz to 40 GHz and 40 GHz to 60 GHz and hardware Option 30 Rackmount 19 inch rack width with front panel input outputs See page 160 Option 31 Rackmount 19 inch rack width with rear panel input output capability See page 160 Option 32 Benchmount Adds side and top panels carrying handles and feet for a stackable bench top configuration Option 41 Digital Radio Provides wider bandwidth preselector 30 Hz video filter with 100 kHz resolution bandwidth and 5 MHz span div optimized for 6 GHz and 11 GHz D R 4 250 790 840 940 450 Option 42 110 MHz IF Output Provides 5 MHz bandwidth at 6 dB points Option 45 1 494P only MATE CIIL CONVERSION KIT 494 to 494P Conversions are made by your nearest Tektronix Service Center Order 040 1140 01 5 300 INTERNATIONAL POWER PLUG OPTIONS Option A1 Universal Euro 220 V 50 Hz Option A2 UK 240 V 50 Hz Option A3 Australian 240 V 50 Hz Option A4 North American 240 V 60 Hz Option A5 Switzerland 220 V 50 Hz WARRANTY PLUS SERVICE PLANS SEE PAGE 497 1 500 M1 49
9. e 012 0114 00 N male to BNC female adaptor 103 0045 00 18 in BNC to BNC connec tor 50 Q coax cable 012 0076 00 CRT mesh filter 378 0726 01 two 4 A fast blow fuse 159 0017 00 115V power cord 161 0118 00 cord clamp 343 0170 00 CRT visor 016 0653 00 amber CRT light filter 378 0115 01 gray CRT light filter 378 0115 02 blue CRT light filter 378 0115 00 operator manual 070 441800 operator handbook 070 4419 00 service manual volume 1 070 441600 service manual volume 2 070 441700 494P Programmable Spectrum Analyzer 46 995 Includes In addition to the above a 2 m double shield ed GPIB cable 012 0630 03 programmer manual 070 441500 OPTIONS 494 494P Option 08 Delete External Mixer Capabili ty Deletes internal switching front panel con nector and external diplexer to connect and use external waveguide mixers Limits fre quency range to 10 kHz to 21 GHz coaxial input Option 12 Help Mode Text CRT prompts selectable between German and English Pull out reference cards in German 494 494P Option 13 Help Mode Text CRT prompts selectable between French and English Pull out reference cards in French 494 494P Option 14 Help Mode Text CRT prompts selectable between Spanish and English Pull out reference cards in Spanish 494 494P Option 20 General Purpose 12 4 GHz to 1 750 200 500 200 500 200 500 4N GH7 Wavegui
10. gnal Counter Accuracy Counter Fre quency x Ref Freq Error 10 2N Hz 1LSD Counter Sensitivity Center Screen S N gt 20 cB Counter Frequency Readout Resolution 1 Hz through 1 GHz Reference Frequency Error Aging Rate 1 x 10 9 day 1 x 10 7 year Frequency Span Division Range 50 Hz div to 500 MHz div in coaxial bands 10 kHz through 21 GHz and 50 Hz div to 10 GHz div in wave guide bands 18 GHz through 325 GHz plus zero span and maximum span Any span to two signifi cant digits within 50 Hz and up to 10 GHz can also be selected with the Data Entry Keyboard Frequency Span Division Accuracy Within 5 of the selected span div over the center eight divisions of the ten division CRT display Resolution Bandwidth 6 dB 30 Hz then 100 Hz to 1 MHz in decade steps plus auto Ac curacy Within 20 Resolution Shape Factor 60 dB 6 dB 7 5 1 or less 100Hz through 1 MHz and 15 1 or less for 30 Hz Residual FM After One Hour Warm Up Bands 1 and 5 12 with span div gt 200kHz and bands 2 4 with span div gt 100 kHz lt 7 kHz N total excursion in 20 ms Bands 1 and 5 12 with span div lt 200 kHz and bands 2 4 with span div lt 100 kHz lt 10 2N Hz total excursion in 20 ms Long Term Drift at Constant Temperature and Fixed Center Frequency and After One Hour Warm Up Bands 1 and 5 12with span div gt 200kHz and bands 2 4 with span div gt 100 kHz lt 5 kHz N per minute of
11. modes 1 W maximum safe input in the linear mode Reference Level Accuracy Accuracy is a function of the characteristics listed below Calibrator Cal out See output signal character istics on page 158 Input Attenuator Accuracy DC to 1 8GHz 0 5 dB 10 dB 1 dB max accumulative 1 8GHz to 18GHz 1 5dB 10dB 3dB max accumulative 18 GHz to 21 GHz 3 0 dB 10 dB 6 dB max accumulative Frequency Response See Frequency Response Table on page 164 Display Amplitude Accuracy Resolution Bandwidth Gain Variation and IF Gain Varia tion Same as 495 see page 158 SPURIOUS RESPONSES Residual No Input Signal Referenced to Mixer Input 100 dBm or less Fundamental mixing Bands 1 3 Harmonic Distortion CW Signal Minimum Dis tortion Mode Typically 60 dBc for 40 dBm signal in the minimum distortion mode to 21 GHz At least 100 dBc for preselected bands 1 7GHz to 21 GHz Third Order intermodulation Distortion Mini mum Distortion Mode At least 70 dB down from two full screen signals within any frequency span At least 100 dB down for two signals spaced more than 100 MHz apart from 1 7GHz to 21 GHz for preselected bands LO Emissions No RF Attenuation 70dBm maximum to 21 GHz INPUT SIGNAL RF Input Type N female connector Input Impedance 50 Maximum VSWR 1 With gt 10 dB Attenuation Frequency Range Specified Maximum DC to 2 5 GHz 25 GHz to 6 0 GHz 6 0 GHz to 18 GHz
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