Agilent 8657A/8657B Signal Generators
Contents
1. 7x 10 2 x 10 5 10 10 MHz Available at a level of gt 0 15 V ms into 50 Q output of 10 5 or 1 MHz is selec table via internal jumper If external ref erence is used output will be the same frequency Accepts any 10 5 or 1 MHz 0 002 Frequency standard at a level gt 0 15 Vrms into 50 Q Output Range dBm 8657A 8657B Resolution Absolute level accuracy 8657A 8657B Level flatness 100 kHz to 2 06 GHz Reverse power protection to maximum output frequency Maximum DC voltage SWR 8657A fc 400 kHz 8657B Output impedance 13 dBm to 143 5 dBm into 50 Q 10 dBm to 143 5 dBm for frequencies from 100 kHz to 1 MHz 13 dBm to 143 5 dBm into 50 Q 10 dBm to 143 5 dBm with pulse modulation installed at f lt 1 03 GHz 0 1 dB lt 1 5 dB gt 7 dBm lt 1 0 dB 7 to 127 dBm lt 1 5 dB lt 127 dBm lt 1 5 dB gt 3 5 dBm lt 1 0 dB 3 5 to 127 dBm lt 1 5 dB lt 127 dBm 0 5 dB output level setting of 0 dBm 50 watts from a 50 Q source 8657A 50 V 8657B 25 V lt 1 5 for levels lt 3 5 dBm lt 2 0 for levels lt 13 dBm lt 1 5 for levels lt 6 5 dBm lt 2 0 for levels lt 13 dBm 50 Q nominal 1 To be within 100 Hz of carrier frequency 2 Add 5 ms when switching to fe gt 1 03 GHz for the 8657B 3 Absolute level accuracy includes allowances for detector linearity temperature flatness attenuator accuracy and measure2. typical 20 Hz to 100 kHz 3 dB bandwidth Distortion internal rates level lt 7 dBm AM depth f lt 1 04 GHz f gt 1 04 GHz 0 to 30 AM lt 1 5 4 31 to 70 AM lt 3 0 4 71 to 90 AM lt 4 0 7 Sensitivity typical 1 Vpeak for indicated accuracy Indicator accuracy for depths lt 90 and internal rates and levels lt 7 dBm Incidental phase modulation at 30 AM depth internal rates lt 2 6 of setting lt 0 3 radians peak 1 8657A only FM distortion only specified for deviations up to 25 kHz for 130 lt fc lt 260 MHz and for 260 lt fc lt 520 MHz 8657B only AM depth is further limited by indicator accuracy specifications 8657A only For fc lt 400 kHz AM depths of 0 to 30 levels lt 7 dBm 8657B only When pulse modulation is installed maximum specified output level in AM is reduced by 3 dB when fc lt 1 03 GHz oPwWwNry External modulation input Front panel BNC 600 Q dc coupled front panel annunciators indicate 1 V peak signal 5 Modulating signal output Internal modulating signal is provided at the front panel BNC connector at nominally 1 V peak into a 600 Q resistive load Simultaneous modulation Internal External AM FM FM AM AM AM FM FM AM FM Pulse Internal Internal AM FM External External AM FM Pulse modulation Agilent 8657B only On off ratio fe 2130 MHz gt 70 dB fe 21 03 GHz gt 95 dB Rise fall times fe 2130 MHz gt 35
3. diameter held 2 5 cm away from the front surface Typical leakage for the 8657Bis lt 0 05 uV for levels lt 40 dBm 100 non volatile registers are available to save front panel settings TTL low to recall next storage register contents 100 or 120 or 220 or 240 volts 5 10 for 8657A 10 for 8657B from 48 to 440 Hz 160 VA maximum for 8657A 200 VA maximum for 8657B IEC 1010 compliant 8657A net 18 2 kg 40 Ib shipping 23 6 kg 52 Ib 8657B net 20 5 kg 45 Ib shipping 26 0 kg 57 b 133 mm H x 425 mm W x 574 mm D 5 25 in H x 16 75 in W x 22 6 in D By internet phone or fax get assistance with all your test and measurement needs Online Assistance www agilent com find assist Phone or Fax United States tel 1 800 452 4844 Canada tel 1 877 894 4414 fax 905 206 4120 Europe tel 31 20 547 2323 fax 31 20 547 2390 Japan tel 81 426 56 7832 fax 81 426 56 7840 Latin America tel 305 269 7500 fax 305 269 7599 Australia tel 1 800 629 485 fax 61 3 9272 0749 New Zealand tel 0 800 738 378 fax 64 4 495 8950 Asia Pacific tel 852 3197 7777 fax 852 2506 9284 Product specifications and descriptions in this document subject to change without notice Copyright 1998 2000 Agilent Technologies Printed in U S A 8 00 5968 2704E Agilent Technologies Innovating the HP Way
4. sequence through the storage registers in any order Automated tests Reliable output attenuators With production lines requiring ever faster throughput test equipment must be more reliable than ever Output level cycling requires electromechanical relays to switch in and out of different attenuators to produce varying output levels The 8657A and B enhance system up time by using a very reliable attenuator technology The 8657A is especially dependable with its electronic atten uator design Instead of using mechanical relays for switching the attenuators the 8657A uses solid state components for setting output levels The patented design uses PIN diode switching elements with 3 million hours mean time between failure rate This exceptional reliability is backed with a 5 year warranty against attenuator failure Ordering information Please contact your Agilent Technologies Sales and Service Office for more information or visit our website at www agilent com find tmdir Option Description 001 High stability timebase 002 Rear panel connections 003 Pulse modulation 8657B only 1BN Mil std 45662A calibration certification 1BP Mil std 45622A calibration with test data 907 Front handle kit 908 Rack flange kit 909 Rack flange kit w front handle 910 Adds operation calibration manual and two service manuals 915 Adds service manual W30 3 year return repair service W32 3 year return calibration service W34 3 year standa
5. Spectral performance for general purpose test Overview The Agilent Technologies 8657A and 8657B signal gener ators are designed to test AM FM and pulsed receivers as well as components With their exceptional analog modulation good spectral purity and superb output level performance these signal generators are ideal for R amp D manufacturing and support In channel performance Measurement confidence The 8657A and B signal generators provide the spectral purity and modulation versatility needed for RF testing of communication and navigation equipment Low residual FM ensures wide hum and noise test margins Hum and noise testing requires a signal generator to have low residual FM to ensure no measurement error The residual FM of the 8657A and B provides the test margins you need for the most demanding hum and noise tests Output level range and accuracy for sensitivity testing With a dynamic range from 13 to 143 5 dBm the 8657A and B allow sensitivity measurements to be made on even the most sensitive receivers The 8657A and B couple this with a level accuracy of 1 dB typically 0 5 dB to 127 dBm across the full temperature range of 0 to 55 degrees C to give you accurate and repeatable measurements every time Low RF leakage eliminates measurement interference Sensitivity measurements can often be masked by RF leakage radiated emissions With the 8657A and B RF leakage is reduced to a level that assures virtually
6. carrier frequency gt 1 04 GHz for deviations lt 20 kHz 200 Hz 400 Hz for carrier frequency gt 1 04 GHz for deviations gt 20 kHz 400 Hz and 1 kHz 2 dc 5 Hz to 100 kHz 3 dB bandwidth de 20 Hz to 50 kHz 1 dB bandwidth 1 Spurious specifications apply for output levels lt 4 dBm and f lt 1 03 GHz when pulse modulation is installed 8657B only 2 520 MHz to 1 03 GHz for 8657B 3 FM not specified when peak deviation is gt f 100 kHz Center frequency accuracy in dc mode Carrier frequency Center frequency accuracy 0 1 to 130 MHz 500 Hz 130 to 260 MHz 125 Hz 260 to 520 MHz 250 Hz 520 MHz to 1 04 GHz 500 Hz 1 04 to 2 06 GHz 1000 Hz Center frequency lt 10 Hz per hour drift typical lt 3 Hz per stability in dc mode hour Distortion at internal rates lt 0 5 THD plus noise typical lt 1 5 for all specified deviations and rates Sensitivity 1 Vpeak for indicated accuracy 1 Vic when in dc FM mode Indicator accuracy internal rates lt 5 of setting Incidental AM peak deviations lt 20 kHz internal rates lt 0 1 AM lt 0 5 AM f gt 500 kHz f gt 1 03 GHz Amplitude modulation Range 8657A 0 to 99 level lt 7 dBm f 2400 kHz 0 to 30 level lt 10 dBm fe 2400 kHz 8657B 0 to 100 level lt 7 dBm fe 2400 kHz 0 to 30 level lt 10 dBm fe 2400 kHz Resolution 1 Rates Internal 400 Hz and 1 kHz 2 External 20 Hz to 40 kHz 1dB bandwidth 8657B
7. m output levels 8657A lt 30 dBc 8657B 0 1 to 1 03 GHz lt 30 dBc 1 03 to 1 8 GHz lt 25 dBc 1 8 to 2 06 GHz lt 25 dBc Subharmonics lt 7 dBm output levels 8657A 8657B 0 1 to 1 03 GHz None 8657B 1 03 to 1 8 GHz lt 40 dBc 1 8 to 2 06 GHz lt 35 dBc Nonharmonics CW mode Offset from carrier Frequency range 5 kHz to 2 MHz gt 2 MHz 0 1 to 130 MHz 8657A lt 60 dBc lt 60 dBc 8657B lt 63 dBc typical 130 to 260 MHz 8657A lt 72 dBc lt 60 dBc 8657B lt 75 dBc typical 260 to 520 MHz 8657A lt 66 dBc lt 60 dBc 8657B lt 66 dBc typical 520 MHz to 1 04 GHz 8657A lt 60 dBc lt 60 dBc 8657B lt 63 dBc typical 1 03 to 2 06 GHz 8657B lt 57 dBc typical lt 54 dBc Frequency modulation Maximum FM peak deviation Center frequency 0 1 to 130 MHz 130 to 260 MHz 260 to 520 MHz 520 MHzto 1 04 GHz 1 04 to 2 06 GHz Resolution 8657A 8657B FM rate Internal External referenced to 1 kHz AC mode the lesser of DC mode 4000 x rate Hz or DC mode 8657A 99 kHz max deviation 8657B 200 kHz 1000 x rate Hz or DC mode 8657A 50 kHz max deviation 8657B 50 kHz 2000 x rate Hz or DC mode 8657A 99 kHz max deviation 8657B 100 kHz 4000 x rate Hz or DC mode 8657A 99 kHz max deviation 8657B 200 kHz 8000 x rate Hz or DC mode 8657B 400 kHz max deviation 100 Hz for deviations lt 10 kHz 1 kHz for deviations gt 10 kHz 100 Hz 200 Hz for
8. ment uncertainty Spectral purity SSB phase noise in CW mode at 20 kHz offset 0 1 to 130 MHz lt 124 dBc Hz lt 130 dBc Hz typical 130 to 260 MHz lt 136 dBc Hz lt 140 dBc Hz typical 260 to 520 MHz lt 130 dBc Hz lt 136 dBc Hz typical 520 MHz to 1 04 GHz lt 124 dBc Hz lt 130 dBc Hz typical 1 04 to 2 06 GHz lt 118 dBc Hz lt 123 dBc Hz typical 102 1K 18K 108K 1B Lf CdBe Hz vs 0Hz 4am Typical Agilent 8657A SSB phase noise at 500 MHz 1 10 100 1K 10K 100K 1M 10M 4 amp 0 Xit dBc Hz vs f Hz Typical Agilent 8657B SSB phase noise at 500 MHz Residual FM CW mode rms Post detection BW rms detector 300 Hz to 3 kHz Frequency range 50 Hz to 15 kHz 0 1 to 130 MHz lt 4 Hz typical lt 2 Hz 130 to 260 MHz lt 1 Hz typical lt 0 5 Hz lt 1 5 Hz typical lt 1 Hz 260 to 520 MHz lt 2 Hz typical lt 1 Hz lt 3 Hz typical lt 1 Hz 520 MHz to1 04GHz 8657A lt 4 Hz typical lt 1 Hz 8657A lt 6 Hz 8657B lt 3 Hz typical lt 1 Hz 8657B lt 4 Hz typical lt 1 5 Hz lt 8 Hz typical lt 3 Hz lt 6 Hz typical lt 3 Hz 1 04 to 2 06 GHz lt 6 Hz typical lt 2 Hz 1 Typical residual FM specifications for the 50 Hz to 15 kHz post detection band width apply only to the 8657B Residual AM 50 Hz to 15 kHz post detection noise bandwidth in CW mode lt 0 04 AM Harmonics lt 7 dB
9. no measurement interference Agilent 8657A 8657B Signal Generators Profile DCFM faithfully reproduces digital signals For radios with digital squelching the 8657A and B have extremely stable dc coupled FM dcFM The de coupling of low rate tones or digital data eliminates droop and the exceptional stability and center frequency accuracy when in dcFM mode eliminates the need to retune the signal generator after dcFM is selected Pulse modulation with the 8657B High performance pulse modulation available on the 8657B will give you confidence in your radar or pulsed carrier measurements This includes rise fall times of lt 35 ns rates from dc to 30 MHz and better than 70 dB on off ratios f lt 1030 MHz yw Agilent Technologies Innovating the HP Way Out of channel measurements with the 8657A B Low single sideband phase noise for adjacent channel selectivity testing A receiver s ability to reject unwanted signals is meas ured using out of channel tests With its good spectral purity the 8657A and B make it easy to perform demanding tests such as adjacent channel selectivity measurements Adjacent channel selectivity measures a receiver s ability to pick out a desired signal while rejecting a strong sig nal one channel away To measure adjacent channel selectivity the out of channel signal generator must have low single sideband SSB phase noise and nonharmonic spurious content at channel spacings o
10. ns fe 21 03 GHz gt 50 ns Maximum repetition rate Level accuracy Duty cycle Pulse modulation input Maximum input level Nominal input threshold Video feedthrough On to off Off to on Pulse time delay dc to 30 MHz typical 1 0 dB typical 0 to 100 typical limited by rise fall time BNC high impedance internally selec table to 50 ohms can be driven directly by TTL 15 V typical 1 6 V typical lt 15 typical 34 ns typical 47 ns typical Remote programming Interface IEEE 488 functions GPIB IEEE 488 SHO AH1 T0 L2 SRO RL1 PPO DC1 DTO CO E1 1 8657B only Pulse modulation specifications apply for carriers gt 130 MHz and lev els lt 7 dBm frequency switching speed typically increases by 30 ms with pulse modulation on Additionally AM is unspecified with pulse modulation turned on at fc21 03 GHz 2 Time delay between a change in input pulse and carrier response General Operating temperature range Storage temperature range Leakage Save recall sequence storage registers Rear panel SEQ input level Power requirements Weight Dimensions 0 to 55 C 40 to 71 C Conducted and radiated interference is within the requirements of RE02 and CE03 for the 8657B except broadband conducted below 70 kHz of MIL STD 461B and FTZ 1046 FTZ 1115 for 8657B Furthermore RF leakage of less than 1 0 pV is induced in a two turn loop 2 5 cm in
11. rds compliant calibration service W50 5 year return repair service W52 5 year return calibration service W54 5 year standards compliant calibration service Technical specifications Specifications describe the instruments warranted per formance and apply after a 30 minute warm up All specifications are valid over the signal generator s entire operating environment range unless otherwise noted Supplemental characteristics indicated by italic type are intended to provide information useful in estimating instrument capability in your application by describing typical but not warranted performance Note The upper frequency range of the 8657A is 1 04 GHz Specifications above 1 04 GHz apply only to the 8657B Frequency Range 8657A 100 kHz to 1 04 GHz 8657B 100 kHz to 2 6 GHz Underrange To 10 kHz with uncalibrated output and modulation Resolution 8657A 10 Hz 8657B 1 Hz Accuracy and stability Switching speed Phase offset Same as timebase lt 35 ms 30 ms typical at 25 C Output signal phase is adjustable in 1 degree nominal increments Internal reference oscillator Std typ Aging rate 2 ppm yr Temperature 0 to 55 C 10 ppm Line voltage Frequency 50 MHz Timebase reference output rear panel External reference input rear panel High stability Option 001 8657A 1 5 x 10 parts day after 10 days 1 0 x 10 parts day after 180 days 8657B 1 0 x 10 parts day after 45 days
12. therwise the in channel signal is masked The exceptional phase noise performance of the 8657A and B provides a cost effective solution for many out of channel tests General purpose and component tests Output power to drive high level inputs For applications requiring high output power the 8657A and B can overrange beyond the 13 dBm specified out put level to gt 16 dBm for most frequencies DCFM for VCO simulation State of the art dcFM and wide FM bandwidth make the 8657A and B ideal sources for many VCO simulation applications For example the 8657A or B can be used to replace a receiver s VCO during design Phase adjust to characterize phase sensitive devices The 8657A and B give you the ability to adjust the phase of the output signal in one degree increments with respect to a source that is locked to the same reference timebase This feature makes it easy to characterize phase detector or phase interferometer receivers during design or manufacturing Manual tests 100 nonvolatile store recall registers save set up time The 8657A and B offer as a standard feature the ability to store 100 complete instrument states This feature decreases set up time when performing repetitive tests and reduces operator errors Register sequencing provides semi automation Stepping through the store recall registers is easy with the front panel sequence keys or the rear panel remote sequence connector These features allow the user to
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