ra I on SR B248 Spcifie request can be addressed to RAKON [email protected] Product Description SR B248 is an ULN (Ultra Low Noise) OCVCSO (Oven Controlled, Voltage controlled, SAW Oscillator) at 480 MHz. It is designed for lab environment (test equipment, shelter, ground based military equipment, etc.). SR B248 is available in a 95.25mm x 76.2mm x 23.27mm package. Features Ultra low phase noise: - 140 dBc/Hz @ 1 kHz offset (typical) - 175 dBc/Hz noise floor (typical) Frequency fine tuning by temperature control of the oven Environment: shelters, stabilized platforms SMA connector for the frequency output + 2 feed thru solder pins for DC supply and V control lOHz Applications 雕 Instrumentation (test equipment, simulator) Ground based military equipment as per MIL-PRF-28800F, Class 3 February 6, 2012 SR B248 Revision A2 1 / 4

rakon SR B248 Spcifications 1.0 Environmental conditions Line Parameter Test Condition Value Unit 1.1 Temprature range 0 to 50 °C 1.2 Storage temperature -40 to 85 °C 1.3 Shock As per MIL-PRF-28800F, Class 3, test equipment 1.4 Vibration As per MIL-PRF-28800F, Class 3, test equipment 2.0 Electrical Interface Line Parameter Test Condition Value Unit 2.1 Supply voltage Pin 2 11.8 to 12.2 V 2.2 Load impedance Pin 3 50 W 2.3 Control Voltage Pin 4 2 to 7 V 2.4 Input impedance Pin 4 10 min kW 3.0 Performances Line Parameter Test Condition Value Unit 3.1 Nominal frequency 480 MHz 3.2 Frequency calibration...

rakon SR B248 Note 1: about phase noise and how to measure it Measurement with PN9000: Current Rakon measurements are performed with PN9000. Two similar oscillators are used as Reference and DUT. Plotted phase noise is the combined noise of both oscillators and the residual noise of the test set-up. Close-in phase noise of DUT is at least the plotted phase noise; typical value is 3dB less (assuming similar noise on Reference and DUT). Օ Noise floor measurement is limited by the noise floor of the test set-up which is around -175dBc/Hz. Measurement with DCNTS: Multi-channel measurement and cross...

SR B248 4.0 Mechanical features 5.0 Pin description Line Pin number Name Description 5.1 1 - Not to be connected 5.2 2 Supply voltage Input supply (+) 5.3 3 Frequency output Output signal 5.4 4 Control voltage Input voltage control 5.5 Ground lug Ground Mechanical ground and (-) supply 5.6 5 - Not to be connected February 6, 2012 SR B248 Revision A2 4 / 4 www.rakon.com