B&K 4070A user manual Internal Bpsk Mode, Int Bpsk 1,000 Hz 000,000.00 Hz 10.0 dBm

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5.22 Internal BPSK Mode

Introduction

The Internal BPSK mode generates a phase shift keyed signal of fixed amplitude. An internal timer is used as a modulating signal to switch the output phase between 0 and 180 degrees at a specified rate. The modulation is suppressed carrier; i.e. no carrier energy is present in the output waveform.

BPSK mode could be accessed from “other” modes menu.

Internal BPSK Mode Parameters

The Internal BPSK mode has the following front panel display:

1Int BPSK: 1,000 Hz

2		1,000,000.00 Hz	- 10.0 dBm

Figure 5.22-1: Internal BPSK mode display

1. Modulating Frequency

3

In this field enter the carrier phase switching frequency. You may enter from 0 Hz to 130,000 Hz in 1 Hz steps. The internal modulating frequency is accurate to 1 Hz from 0 Hz to 3900 Hz. It is accurate to within 1% across its

full range of 0 Hz to 130,000 Hz.

2. Carrier Frequency

In this field enter the frequency of the carrier. You may enter from 0 Hz (DC) to 21.5 MHz in 0.01 Hz steps.

3. Level

In this field enter the output level, from 4 mVp-p to 10 Vp -p in 1 mV steps or from -44.0 dBm to +24.0 dBm in 0.1 dBm steps.

NOTE: The level specified is a 50O loaded level. This is the level of the signal, which will appear across a 50O load connected to the SIG Out connector. Into an open circuit, the output swing will be twice the value entered.

Offset

By pressing this key, you can enter an offset voltage for the output waveform. For more information on output offsets refer to section 4.4.

Ext Gating Input

This TTL compatible input can be used to turn the output signal on or off. A logic high voltage on this jack (+3V to +10V) will turn off the output signal. A logic low voltage on this jack (0V to -10V) will leave the output signal on. For further information on the Ext Gating Input, refer to section 2.0.

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BK Precision 4070A User Manual Rev.2.2

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Contents User’s Manual Page +K Precision Corp Model 4070A User’s ManualTable of Contents Remote operation Warranty informationArbitrary waveform system DC Operation OptionIntroduction Description Modes Feature summarySync out connector Installation and setupSIG Out connector External Modulation In connector External Trigger/Gating/FSK/BPSK input External Arb Sync In / Out connector External Reference Input / Ext Arb. Clock connectorRS232 Interface connector Line in connectorOperating controls and keys Mode keyField arrow keys Recall / Store keyNumeric keys 0 to 9, Trigger keyÉ, ê, è, ç keys Clear key One Touch Mode KeysMHz/dBm, KHz/Vp-p/Sec, Hz/mVp-p/mS keys Operating guide Operating mode selectionChanging frequency Changing levelModifying an existing value Changing valuesEntering a new value Basic Sinewave CW Mode Mode descriptionsSinewave Mode 000,000.00 Hz 10.0 dBm Internal AM Mode External AM Mode Parameters External AM ModeExternal AM Input gain 000,000.00 Hz PEP level -10.0 dBm Input GainInternal FM Mode Parameters Internal FM ModeInt FM 1,000 Hz Pk dev 10,000 Hz 000,000.00 Hz 10.0 dBm Peak Frequency DeviationExternal FM Mode Parameters External FM ModeExternal FM Pk dev 10,000 Hz 000,000.00 Hz 10.0 dBm Internal PM Mode Parameters Internal PM ModePeak Phase Deviation Int PM 1,000 Hz Pk dev 180 deg 000,000.00 Hz 10.0 dBmExternal PM Mode Parameters External PM ModeExternal PM Pk dev 180 deg 000,000.00 Hz 10.0 dBm Sweep Mode Sweep time Up / Down sweepInternal FSK Mode Parameters Internal FSK ModeMark Frequency Space FrequencyExternal FSK Mode Parameters External FSK ModeExt FSK Mark 1,000,000.00 Hz Space 2,000,000.00 Hz 10.0 dBm Ext FSK InputBurst Mode Trig Ton 10,000 mS 000,000.00 Hz Off 10.0 dBm Burst Mode IntroductionBurst frequency Internal SSB Mode Parameters Internal SSB ModeInt SSB 1,000 Hz Upper Sideband 000,000.00 Hz 10.0 dBm Upper/Lower Sideband selectionsExternal SSB Mode Parameters External SSB ModeExternal SSB Upper Sideband 000,000.00 Hz +10.0 dBm Dtmf generation # Duration 200 mS Delay Level -10.0 dBm Dtmf Generation ModeDtmf Generation Mode Parameters BackgroundDtmf Duration Dtmf DelayDtmf Detection Mode Parameters Dtmf Detection ModeDtmf detection on Ext Mod input 3 # a Dtmf detected digitsPower & Voltage Measurement Mode Parameters Power & Voltage Measurement ModePower Level Voltage LevelRemote Mode Arbitrary ModeOther mode Internal Bpsk Mode Parameters Internal Bpsk ModeInt Bpsk 1,000 Hz 000,000.00 Hz 10.0 dBm External Bpsk Mode Parameters External Bpsk ModeExternal Bpsk 000,000.00 Hz 10.0 dBm 10,000 Hz F2 Ton 000 mS Toff 10.0 Dualtone Generation ModeDualtone Examples Using the Data Modulation Mode Data Modulation ModeData Modulation Mode Parameters Baud RateExample Message Downloading Modulation Message DataSaving the Message Triggering the TransmissionVCO Mode Parameters Voltage Controlled Oscillator VCO ModeStart End 1,000,000.00 Hz 10.0 dBm End FrequencyRemote Operation ConnectingChecking your connection with Hyper Terminal Remote Control Programming Rules Remote Control OperationReset 4070A to Sine wave mode Remote Control Commands× Ø Returns CE1,0 Enable, Disable LCD echo to terminal K1.0 Enable, Disable front panel keys and rotary knobReport hardware and software versions F0-9 Move cursor to field 0 to Linear Trig Up Time 10,000 mS? or H Print help menu Return a CExample Remote Control ExamplesQuick Start Guide Arbitrary Waveform ModePin 9-pin cable Pin 25 pin cable adapter Description of the Arbitrary Waveform Generator Introduction to the Arbitrary Waveform SystemFeature Summary Switching ModesFunction Generator Pulse GeneratorInt Clock / Ext Clock / Lock Master Lock slave mode Arbitrary Waveform ModePhase Continuous/Triggered modeFunction Gen Wave Pos Ramp Rep Freq 100,000 Hz 000 mV Function Generator ModeWaveform Repetition FrequencyPositive Only Pulse Generator ModeDuty Cycle Downloading arbitrary waveforms Using WAVELOAD.EXESaving Arbitrary Waveforms Cwaveload /COMx /y /baudz filename.extUsing your own program Floating Point Format Data FormatsRules for Floating Point format Example #2 Time & Value Floating Point FormatDigital Format Integer Format Rules for Hexadecimal format Hexadecimal FormatExample The data value E468 is handled as follows Rules for Binary format Binary FormatExample Arb Multiple Units LockingGenerator Phase Resolution More on Phase OffsetsStarting Address = Number of waveform points * Phase Offset Waveform Size RestrictionsProgram Listing ARB.BAS Example Arb ProgramClose System Subroutines Return Print #1, a Send integer value to 4070A Return Return DC Operation Option Wiring DiagramOperating Modes 4070A SpecificationsRemote Software CDAppendix a Hardware SetupCLS CLS Print Print Subroutines END SUB Appendix B Television Remote Control ExampleCLS Make sure a 4070A is attached to the serial port Print Limited Two-Year Warranty Service Information Savi Ranch Pkwy Yorba Linda, CA 92887 USA TEL