Symmetricom 5401, 5402 manual Output Specifications and Characteristics

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Operating Manual

Specifications

Table 4 Input Specifications and Characteristics (Continued)

5401 RS-232 Input/Output Type	MS27499E10B35S

5401 Connector Pin Assignments:

Pin	Function

1	Chassis Ground

2	Transmitted Data

3	Received Data

4	Signal Ground

5-13	Not Used

5402 RS232 Input/Output Type	DB9

5402 Connector Pin Assignments:

Pin	Function

2	Transmitted Data

3	Received Data

5	Signal Ground

DRO RS-232 Parameters:

Baud	9600

Parity	None

Word Length	8 Bits

Stop Bits	1

Output Specifications and Characteristics

Table 5 Output Specifications and Characteristics

DRO 1 PPS Output Type

5401: Isolated SMA (J1-J6)

5402: Isolated BNC (J4-J9)

The DRO outputs 1 PPS signals with the following characteristics:

Level	> 3 V peak into 50Ω (TTL-compatible)

Rise Time	5 nanoseconds (20% to 80%)

Fall Time	1 microsecond (90% to 10%)

Pulse Width	20 microseconds ±0.1 microseconds

Output Impedance	50Ω

PN 8500-0150, Rev. A, May 2005

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Contents

Airborne Disciplined Rubidium Oscillator Symmetricom, Inc Operating Manual Preface Limited WarrantyProprietary Notice Where to Find Answers to Product and Document QuestionsLimitation of Liability Conventions Used in This Guide Operating Manual Preface Typographical Conventions When text appears It means This wayPN 8500-0150, Rev. A, May Contents-1 Operating Manual ContentsOperating Manual SpecificationsOperating Manual Introduction Product OverviewSymmetricom 5402 Disciplined Rubidium Oscillator Symmetricom 5401 Airborne Disciplined Rubidium OscillatorUnpacking and Inspection InstallationSymmetricom 5401 Installation Procedure Operating Manual Installation5401 Adjustment Locations Symmetricom 5401 AdjustmentsSymmetricom 5402 Rack Mounting Procedure Symmetricom 5402 Initial Operation Symmetricom 5402 Installation ProcedureSymmetricom 5402 Adjustments Operating Manual Operation RS-232 Input/OutputStatus Request Operating Manual Operation DRO Commands Via RS-232Description Discipline OffDynamic Gain Control Discipline OnMinutes Enter KMEnter KO1, KO2 Enter Resync Threshold Enter DisgainEnter Rate Threshold Enter Resync DelayTurns burst status off Burst Status OnBurst Status Off Status will be output every secondRequest TI DRO Discipline Sequence FlowchartDTyyy Firmware Number PN 8500-0150, Rev. A, May Enter DAC ValueRequest Firmware Version Operating Manual Operation Revision Letter of Firmware Enter Start-up ParametersRequest Start-up Parameters Response Format Description Calibrate UnitReturns the unit to a default state Default Values Set DefaultsEnter 1 PPS Offset not implemented Request Setup ParametersInput Threshold High/Low Enter Oscillator Control Range not implemented Enter Programmable Delay Value Design Verify On/Off Enter Estimation Filter Time Constant Cal StatusEnter Dynamic Gain Factors Input Specifications and Characteristics Input Specifications and CharacteristicsOperating Manual Specifications Output Specifications and Characteristics Output Specifications and CharacteristicsCoherence a DRO Internal Time Bases Indicators Front Panel5401 Indicators Front Panel 5402 Indicators Front Panel10 MHz Oven Oscillator Operating Manual Specifications DRO Internal Time BasesMHz Oven Oscillator Approximately 10 pounds PN 8500-0150, Rev. A, May DimensionsWeight Approximately 8 poundsEMI Environment