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VXI SM8000 user manual Relay Register 00 - Read and Write, Writing To The Relay Registers, Addr

Models: SM8000

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WRITING TO THE RELAY REGISTERS

VXI Technology, Inc.

WRITING TO THE RELAY REGISTERS

If the SM8000 is used to drive single-mode prism switches, in either latching or non-latching configurations, setting the switches is accomplished through writing to the Relay Register located at Relay Register Offset H0000. Each bit, of this 16-bit register, represents the state of the relay (1 = closed, 0 = open). (Note that bits 15 through 12 are unused.) To change the state of any relay, it is only necessary to write a 16-bit integer to the specified register with the new configuration. For example:

•writing a data value of "0" to the register at offset "0" would open the 12 available switches

•writing a data value of 4095 (0x0FFF) to the same register would close the 12 switches

•writing a data value of 4094 (0x0FFE) to the same register would close all switches except switch number 1

Relay Register 00 – Read and Write

ADDR	Plug-In LA+0x000
D15-D12	Unused	Write has no effect. Read back as 1111.
		0	= Opens optical path.
	1x2 or 2x2 Optical	1	= Closes optical path.
	1x2 or 2x2 Optical	Pon state = 0
D11-D0	Prism Switch
	Control Register	A read of this bit location will indicate whether the optical path is
		either closed or open. This register controls the possible 12 prism
		switches that may be driven by the SM8000.

SM8000 Series Programming

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VXI SM8000 user manual Relay Register 00 - Read and Write, Writing To The Relay Registers, Addr

Contents

OPTICAL SWITCH USER’S MANUAL VXI Technology, IncP/N Released February 13 2031 Main Street Irvine, CA 949VXI Technology, Inc SECTION TABLE OF CONTENTSSECTION SECTIONRead Example Command SetUncalibrated Operation - Move-To-Absolute-Step Write ExampleSM8000 Series Preface VXI Technology, IncRESTRICTED RIGHTS LEGEND WARRANTYLIMITATION OF WARRANTY CERTIFICATION2031 Main Street Optical SwitchD E C L A R A T I O N O F C O N F O R M I T Y VXI Technology, IncSM8000 Series Preface VXI Technology, IncUse Proper Power Source GENERAL SAFETY INSTRUCTIONSTERMS AND SYMBOLS Use Proper Power CordOperating Conditions WARNINGS CONTAvoid Electric Shock Ground the ProductVXI Technology Lake Stevens Instrument Division SUPPORT RESOURCESVXI Technology World Headquarters VXI Technology Cleveland Instrument DivisionSM8000 Series Preface VXI Technology, IncINTRODUCTION SECTIONOVERVIEW SM8000 SERIES - OPTICAL SWITCH CONTROLLER Configurations SM8001 / SM8002 - MULTI-CHANNEL SWITCHES2 x N Blocking FIGURE 1-2 SM8001 / 8002 SWITCHES1 x N Duplex 1 x N0.6 dB typical, 1.2 dB maximum SM8001 / SM8002 MULTI SWITCH SPECIFICATIONS1 All specifications referenced without connectors 780 - 1650 nmTransfer - Position SM8003 - PRISM SWITCHESSPST SPDT0.6 dB typical, 1.1 dB maximum SM8003 PRISM SWITCH SPECIFICATIONS2 Repeatability for 100 cycles at constant temperature 780 - 1570 nm0 - 10 dB SM8101 / SM8102 SPECIFICATIONSResolution SM8101 / SM8102 - OPTICAL ATTENUATORSINTRODUCTION CALCULATING SYSTEM POWER AND COOLING REQUIREMENTSSETTING THE CHASSIS BACKPLANE JUMPERS PREPARATION FOR USEFRONT SETTING THE LOGICAL ADDRESSswitch to 1 and the front switch to BACKSELECTING THE EXTENDED MEMORY SPACE switch to C and the front switch toDivide by Convert to MSB and LSBMating Optical Connectors Service should only be performed by qualified personnelOPTICAL CONNECTIONS Cleaning Optical ConnectorsGENERAL DESCRIPTION OPERATIONSECTION SPDT SM8003 - Prism SwitchesFIGURE 3-2 SM8003 PRISM SWITCHES SPSTSM8101 / SM8102 - Optical Attenuators FIGURE 3-3 ATTENUATOR DIAGRAMRelay Registers - Output Channel Selection OPERATIONSM8001 / SM8002 - Multi-Channel Switches Resetting the SwitchTABLE 3-1 CONTROL CODES FOR 1XN CONFIGURATION 1 x N Switch ConfigurationRESET FIGURE 3-4 1 X N SWITCH CONFIGURATIONFIGURE 3-5 DUPLEX 1 X N SWITCH CONFIGURATION Duplex 1 x N Switch ConfigurationTABLE 3-2 CONTROL CODES FOR DUPLEX 1 X N CONFIGURATION FIGURE 3-6 2 X N BLOCKING SWITCH CONFIGURATION 2 x N Blocking Switch ConfigurationTABLE 3-3 CONTROL CODES FOR 2 X N BLOCKING CONFIGURATION FIGURE 3-7 2 X N NON-BLOCKING SWITCH CONFIGURATION 2 x N Non-Blocking Switch ConfigurationTABLE 3-4 CONTROL CODES FOR 2 X N NON-BLOCKING CONFIGURATION FIGURE 3-8 MULTI-SWITCH TIMING Calculating Switching TimeSM8101 / SM8102 - Optical Attenuators SM8003 - Prism SwitchesCalibrated Operation Starting the DeviceControl Modes Uncalibrated Operation - Move-To-Absolute-StepBUSY Signal Step 1 - Power Up and InitializeStep 2 - Query Default Parameters Step 3 - Actuate the Devicethen REGISTER ACCESSPROGRAMMING ADDRESSINGREAD FUNCTION TABLE 4-1 SMIP II REGISTER MAP - A16OFFSET WRITE FUNCTIONDevice Type Register - Read Only SMIP II REGISTERS - A16ID Register - Read Only Logical Address Register - Write OnlySerial Number Low Register - Read Only Control Register - Write OnlyOffset Register - Read and Write Serial Number High Register - Read OnlyADDR Interrupt Status Register - Read OnlyInterrupt Control Register - Read and Write Subclass Register - Read OnlyTrace RAM Start High Register - Read and Write NVM Access Register - ReadNVM Access Register - Write Board X, Y Used Address Register - Read and WriteTrace RAM Address LOW Register - Read and Write Trace RAM End High Register - Read and WriteTrace RAM End Low Register - Read and Write Trace RAM Address HIGH Register - Read and WriteADDR Open Trigger Select Register - Write OnlyTTL Trigger Polarity Register - Write Only ADDRADDR Trace RAM Control Register - Read and WriteBusy Trigger Control Register - Read and Write ADDRADDR Trigger Advance Register - Write OnlyBoard Busy Register - Read Only Reserved Registers - Read and Writefor Configuration Relay Registers FIGURE 4-1 SM8000 SERIES - A24/A32 ADDRESS SPACEVXI Configuration Space 1M Memory Allocated to Store Module Settings 1M Memory AllocatedSee Typical Optical Multi Switch Operation See Typical Optical Multi Switch OperationControl Register - Read and Write See Typical Optical Multi Switch OperationControl Register cont Control Register cont Delay Register - Read and WriteADDR ADDR Status Register - Read OnlyADDR Command Register - Write OnlyADDR Address Register - Write OnlyRELAY REGISTER OFFSET DEVICE MEMORYWRITING TO THE RELAY REGISTERS Relay Register 00 - Read and WriteADDR Relay Optical Module’s Data Attenuation Level Relay Optical Module’s Data Attenuation LevelRegister 02 thru 08 - Read and Write Register 0A thru 0C - ReadPROGRAMMING EXAMPLES TYPICAL OPTICAL MULTI-SWITCH CONTROL EXAMPLEWrite TYPICAL OPTICAL ATTENUATOR CONTROL EXAMPLERead To operate the modules correctly, the SM8000 must be loaded with a valid Address in the Address Register. The SM8000 is hard coded at the factory with the optical modules default address of 73 = 49h, and may be used to generate the address used in the command. This is the address of all attenuators as shipped from the factory. During the programming of the optical module, the programmer may wish to omit sending the module’s address over the VXI Bus, letting the SM8000 generate the default address that is used in the command string. This could possibly increase throughput, by decreasing VXI Bus traffic, if the modules are receiving many commands, although this is only true if the optical module’s address is not changed by the user. If the address is to be changed, IT IS IMPERATIVE THAT THE NEW ADDRESS BE WRITTEN DOWN. Failure to do so will result in an inability to control the module. All four possible modules may have the same address. The SM8000 controls them on separate internal busses Bits COMMAND REGISTERTABLE 4-2 ATTENUATOR COMMAND SET COMMAND SEThexadecimal value Convert decimal step number to hexadecimalConvert to HIGHBYTE and LOWBYTE format HIGHBYTE and LOWBYTE value toPage format Multiply dB value by 100 to get integer decimalConvert integer decimal to hexadecimal Convert to HIGHBYTE and LOWBYTEHIGHBYTE and LOWBYTE value to Convert hexadecimal value to an integerdecimal value Divide by 100 to convert to dB valueConvert hexadecimal value to an integer decimal value for wavelength nmHIGHBYTE and LOWBYTE value to hexadecimal valueConvert the LOWBYTE and add 1900 to get Convert to calibration temperatureConvert the HIGHBYTE to get the month Convert the MIDBYTE to get the dayPut the major and minor numbers together to Convert the HIGHBYTE into the major revisionnumber Convert the LOWBYTE into the minor revisionConcatenate HIGHBYTE and LOWBYTE Multiply by 100 to convert decimal attenuationvalue to an integer Covert integer to hexadecimaltraffic, if the modules are receiving many commands. Although hard coded at the factory with the optical modules defaultused in the command. This is the address of all attenuators as the default address that is used in the command string. ThisPage SM8000 Series Programming VXI Technology, IncINDEX VXIbus