Model 835-6 Specification 1.46 Portable 6.1 GHz Microwave Signal Generator Model 745 Series 250 fs Digital Delay Generator BNC Berkeley Nucleonics Test, Measurement and Nuclear Instrumentation since 1963 BNC Model 835-6 Series Introduction The Model 835-6 is a low-noise and fast-switching microwave signal generator covering a continuous frequency range from as low as 9 kHz up to 6.1 GHz. The Model 835-6 provides full RF signal generator capabilities including OCXO-stabilized low phase-noise signal with micro-Hz frequency resolution, wide and accurately levelled output power range, extensive modulation capabilities, and fast switching. It is targeted for a wide range of applications where a high-quality analogue signal is mandatory, offering an alternative to expensive high-end RF performance at an attractive cost is required. The very compact and rugged design of the Model 835-6 operates at very low DC power consumption (only 12 watts), with minor heat dissipation and not requiring a noisy fan. This gives the Model 835-6 a great advantage in laboratories or production test facilities. The low power design allows the use of the optional internal battery modules which make it a truly portable instrument, ideally suited for field testing, installation and maintenance. 19 inch rack-mount solutions are also available. The Model 835-6 supports various standard interfaces such as USB (USBTMC), LAN (VXI-11) or GPIB and extensive API with programming examples are available. Signal Specification The specifications in the following pages describe the warranted performance of the signal generator for 25 ± 10 °C after a 30 minute warm-up period and for all configurations (options 7096 if not explicitly stated). Typical specifications describe expected, but not warranted performance. Min and Max specificaParameter Frequency range resolution Phase resolution Frequency update rate List/Sweep mode Min. Typ. 9 kHz Max. Note 6.1 GHz 0.001 Hz 0.1 deg time from receipt of SCPI command firmware 300 µs 200 µs SSB Phase noise at 1 GHz at 20 kHz from carrier Total jitter Spectral purity Output harmonics 68 fs RMS - 40 dBc/Hz Sub-harmonics Non-harmonic spurious < 1 MHz > 1 MHz 2 See measured phase noise plots -130 dBc/Hz BW over 10 Hz to 1 MHz -30 dBc Pout=+10 dBm; -70 dBc -70 dBc -60 dBc -75 dBc -65 dBc Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com Pout=+10 dBm; BNC Model 835-6 Series Signal Specification continuing Parameter Min. Typ. Max. 3 Hz Residual FM @ 1 GHz 12 Hz Residual AM @ 1 GHz tbd Power Level < 5.0 GHz > 5.0 GHz -30 dBm -30 dBm - 120 dBm Resolution Level uncertainty +15 dBm +13 dBm +13 dBm Note 0.3 kHz to 3 kHz, weighted (ITU-T) 0.02 kHz to 23 kHz RMS value (0.01 kHz to 15 kHz) ALC ON with Option 7090 0.01 dB < 0.8 dB ALC ON, > -30 dBm < 1.2 dB ALC ON, > -110 dBm 50 Ω Output impedance VSWR Reference frequency input Reference input level <2 8 MHz -5 dBm 0 dBm Lock Range 200 MHz +13 dBm User programmable +/- 1.0 ppm Reference input impedance 50 Ω Internal reference frequency output 10 MHz Initial accuracy of internal reference ±40 ppb Temperature stability (0 to 50 deg C) calibrated at 23 ± 3 °C at time of calibration ±100 ppb 0.5 ppm Aging 1st year Aging per day (after 30 days operation) 5 ppb Warm-Up time 5 minutes +5 dBm 50 Ω Output of internal reference Reverse Power Protection DC Voltage RF Power Dimensions Excluding connectors 30 V 36 dBm W x L x H = 172 x 220 x 106 mm W x L x H = 172 x 243 x 106 mm Including connectors Sweeping Capability Sweeps can be performed with combined internal or external AM/FM/PM/pulse modulation running. With modulation enabled, the minimum step time increases to 2 ms. Parameter Min. Typ. Max. Frequency Sweep Sweep type: linear, logarithmic, random Step time ( tstep ) 3 600 µs 19998 s Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com Note BNC Model 835-6 Series Sweeping Capability (continued) Parameter Min. Typ. Max. Note Generalized list sweep allows individual setting of frequency, power, dwell-time, and off-time for each point List size 2 20.000 Step time (t step) 200 µs 19998 s Dwell time (t dwell ) 50 µs 9999 s Off -time (incl. transient time) (t off ) 0 / 50 µs 9999 s mechanical attenuator not used 0.1 µs Time resolution 1 µs Timing accuracy per point Frequency Chirps (linear ramp, up/down) Bandwidth Dwell Time (tdwell) of carrier frequency 10 % 10 ns 100µs Number of frequencies 20’000 Modulation Capabilities All modulation types (FM, PM, AM, and pulse modulation) may be simultaneously enabled except: FM and phase modulation cannot be combined. For example, AM and FM can run concurrently and will modulate the output RF. Parameter Min. Max. Note 1 Hz 3 MHz 1 Hz 1 MHz sine triangle 50 kHz square Multifunction Generator Output is Sync Out at rear panel Frequency Range Typ. sine, triangle, square wave Frequency resolution Output voltage amplitude peak-peak 0.1 Hz 10 mV Sine Harmonic Distortion 5V 2V Sine, triangle Square (CMOS output) 1% < 100 kHz, 1 Vpp Pulse modulation On/off ratio Repetition frequency Pulse Width 70 dB DC 30 ns 5 MHz ALC Hold ALC on 50 µs Pulse rise/fall time Pulse trains length (pulses) 4 5 ns 2 4192 Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com BNC Model 845 Series Model 835-6 Modulation Capabilities Parameter Min. Pulse width (continued) Typ. Video crosstalk Max. Note 100 µs 30 ns -40 dB 1V TTL External input amplitude AC DC Frequency modulation < 0.37 GHz Modulation waveforms Modulation rate External input sensitivity Sine, triangle, FSK 1 Hz/DC 800 kHz -3dB frequency response settable in AC mode discrete values in DC mode < N · 100 MHz for 1 Vpp < 1% Total harmonic distortion 1 kHz rate & N · 1 MHz deviation Phase Modulation Phase deviation (peak) 0 N·80 rad 1 Hz Modulation rate Modulation waveforms External input sensitivity N · 40 rad for 1 Vpp Total harmonic distortion > -3dB frequency response 800 kHz Sine, triangle, FSK < 1% 1 kHz rate & N · 20 rad deviation Amplitude Modulation 0.1 Hz Modulation rate Modulation depth Modulation waveforms Distortion Accuracy 20 kHz 90% 0% Sine, triangle, FSK 2% 3% Multi Purpose Output (FUNC OUT) Parameter Min. Typ. Output is FUNC OUT at rear panel Max. Note sine, triangle, square wave MULTIFUNCTION GENERATOR Frequency range 1 Hz 3 MHz sine 1 Hz 1 MHz triangle 50 kHz square Frequency resolution 0.1 Hz Output voltage amplitude peak-peak 10 mV Harmonic Distortion Output impedance 5V 2V Sine, triangle, Square (CMOS output) 1% < 100 kHz, 1 Vpp 50 Ohms Sine, triangle CMOS square wave VIDEO OUTPUT (of internal pulse modulator) Output Period 5 CMOS 30 ns 50 s Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com BNC Model 835-6 Series Multi Purpose Output (FUNC OUT) continued Parameter Min. Pulse Width Max. 15 ns RF delay TRIGGER OUT Typ. Note 50 s 10 ns Synchronization mode for multiple sources Modes Trigger on sweep start Trigger on each point Trigger waveform pulse width 100 ns Trigger (TRIG IN) Input is TRIG IN at rear panel Parameter Min. Typ. Max. Trigger Types Continuous, single, gated, gated direction Trigger Source RF key, external, bus (GPIB, LAN, USB) Trigger Modes Continuous free run, trigger and run, reset and run Trigger latency tbd 5 µs Trigger uncertainty External Trigger delay 50 µs External Delay Resolution Trigger Modulo 6 40 s 15 ns 1 Trigger Polarity Parameter Note 255 Execute only on Nth trigger event Rising, falling Min. Typ. Max. Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com Note BNC Model 835-6 Series Typical performance curves Phase Noise Performance Maximum Output Power Parameter Min. Maximum Output Power (1 kHz to 10 MHz) 7 Typ. Max. Harmonic Performance at + 10 dBm Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com Note BNC Model 835-6 Series Connectors 835-6 Series Rear Panel 835-6 Series Front Panel 1. Trigger input: BNC female 2. Function output: BNC female 3. External reference input: BNC female 4. Internal reference output: BNC female 5. FM/PM modulation input: BNC female 6. AM and Pulse modulation: BNC female 7. LAN connection: RJ-45 8. USB 2.0 host and device 9. GPIB: IEEE-488.2, 1987 with listen and talk (optional) 10. DC Power plug (6V, 2.5A) 11. DC power switch 1. RF output: SMA female 2. RF on/off button 3. Rotary knob 4. Menu and arrow keys General Characteristics Options Figure 1 - 7090: Extended power range down to <-120 dBm) step attenuator module - 7088: battery module (not available for 1U -835-6-R) - 7094: GPIB IEEE-488.2,1987 programming interface (not available for 1U -835-6-R) - 7091 / 7092 - 19’’ rackmount enclosure: good for one or two adjacent units GPIB: IEEE-488.2,1987 programming interface. Remote programming interfaces 8 Weight = 2.5 kg (6 lbs) net, = 4 kg (8 lb.) shipping Dimensions 106 mm H x 172 mm W x 220 mm L [4.21 in H x 6.77 in W x 8.66 in L] Recommended calibration cycle 24 months Power requirements: 6 VDC; 20 W maximum notice Ethernet 100BaseT LAN interface, Mains adapter supplied: 100-240 VAC in/ 6V, 3.3A DC out USB 2.0 host & device Operating temperature range: 0 to 40 °C Safety/EMC Complies GPIB (IEEE-488.2,1987) with listen and talk (optional) Storage temperature range: –40 to 70 °C with applicable Safety and EMC Control language SCPI Version 1999.0 Operating and storage altitude up to 15,000 feet Berkeley Nucleonics Coporation - 2955 Kerner Blvd - San Rafael CA 94901 800-234-7858 or LiveChat @ www.berkeleynucleonics.com regulations and directives.
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