Novatech Instruments 440A Manual
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NOVATECH INSTRUMENTS, INC. 206.301.8986 VoiceUnited States of Americahttp://www.novatechsales.com/sales@novatechsales.com400MHz Programmable Signal SourceModel 440ASpecifications:INSTRUMENTSOUTPUTTYPE: Sine. (optional ECL/TTL)IMPEDANCE: 50Ω.RANGE: 200kHz to 400MHz in 1Hz steps.AMPLITUDE: approximately 0dBm (630mV pp set at10MHz) into 50Ω.CONTROLOutput frequency (32-bits) and phase (14-bits) are con-trolled by sending simple text commands over a bit-serialinterface port (RS232) at 19.2kBaud. Settings can besaved in EEPROM via the serial port.ACCURACY AND STABILITYAccuracy: <±1.5ppm at 10 to 40o C. Stable to an addi-tional ±2ppm per year, 18 to 28o C. (Internal Clock)REFERENCE CLOCK INLEVEL: 0.75-3.0Vrms Sine or Square Wave. 50Ω.FREQUENCY: Programmable from 1MHz to 25MHz, in8kHz steps. The 440A will track the externally suppliedreference as long as the external frequency is within±5ppm. When locked the output frequency maintains theaccuracy and the stability of the reference clock with nobinary round-off. The external reference can be disabledto use the internal oscillator in free-run mode.SPECTRAL PURITY (Typ. 50Ω load, 10MHz ref.)Phase Noise: <-120dBc, 10kHz offset, 10MHz output.Spurious: <-55dBc below 10MHz (typ. 500MHz span)<-50dBc below 80MHz<-45dBc below 160MHz<-35dBc below 400MHzHarmonic: <-60dBc below 1MHz<-55dBc below 20MHz<-50dBc below 80MHz<-40dBc below 160MHz<-35dBc below 400MHzPOWER REQUIREMENTS+5VDC (+4.75 to +5.25) @<1.0A. (90-240VAC withprovided AC-adapter)SIZE39mm H, 107mm W, 172mm L, not including connectors.Shielded aluminum case.ENVIRONMENTALTemperature: 0 o C to +50o C operating.Humidity: 80% to 31o C, decreasing linearly to 50% at40 o C.CONNECTORSSine: front panel SMA; Reference In: rear panel BNC.RS232 control: DE9F on rear panel. +5V DC Power:2.5mm power receptacle, center positive.The Model 440A Programmable Signal Source generates a low dis-tortion sinewave signal from 200kHz to 400MHz with 1Hz resolu-tion. The 440A contains an internal temperature compensated crystaloscillator that can be locked to an external reference in 8kHz steps,allowing the 440A to lock to common telecom signals, such as T1and E1 rates, as well as common instrumentation frequencies such as5MHz and 10MHz without external hardware. When locked, theaccuracy and stability of the 440A will match that of the reference.The relative phase of the 440A can be controlled with 14-bits of res-olution. The 440A is set by sending simple text commands over a19.2kBaud serial interface. Four 440A can be mounted in a 1U rackand eight in a 2U rack with optional rack adapters. The 440A oper-ates from a single +5VDC power supply (AC-line adapter provided). |
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