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Labsphere SC-5500, Manual

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Labsphere SC-5500 Manual Download Page 33

SX-01635-000, Rev. 5

30

Detector Current

Detector Voltage

      Current to
Voltage Converter

Multiplexer

    Post
Amplifier

ADC

Gain Control
   Network

Gain Control
   Network

Gain Control

   Network

Control Bus

RS-232C
 Driver

RS-232C

IEEE Driver

IEEE Driver

IEEE 488

   GPIB
Controller

Zilog Z80 Series 
 Microcontroller

Data Bus

Display
Board

  Front 
  Panel
 Control
Switches

8-bit 32K Memory

8-bit 32K EPROM

Serial
 Data

Reference
  Voltage

Guard
Circuit

Figure 8. Functional block diagram of the SC-5500 radiometer.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Summary of Contents for SC-5500

Page 1: ...ss underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos...

Page 2: ...n case of alteration of the prod uct not agreed upon by us this declaration will lose its validity Product Description Integrating Sphere System Control Model Number SC 5500 Applicable EC Directive s...

Page 3: ...er Variable Attenuator Operation 11 Operating Procedures 12 User Interface 13 Calibration 16 SC 5500 Programming 18 SC 5500 Programming Commands 18 IEEE 488 Programming 20 RS 232C Programming 21 Maint...

Page 4: ...displaying the continuous output of your detector The SC 5500 Integrating Sphere System Control is designed for either table top or rack mounted use Up to 100 different calibration constants can be p...

Page 5: ...kages is provided in your system manual Special symbols are used in this manual Triangular shaped symbols indicate a danger or warn ing Electrical Shock Hazard Caution TALK LISTEN REMOTE FUNCTIONS CAL...

Page 6: ...claim immediately with the freight carrier and contact the Labsphere Customer Service Department at 603 927 4266 The following standard items should accompany your SC 5500 shipment SC 5500 instrument...

Page 7: ...ge setting before making the electrical hookup The appropriate line voltage for the SC 5500 either 115 or 230 VAC was set prior to ship ping however it can be changed externally Double check that the...

Page 8: ...ollows to mount the SC 5500 in your rack 1 Secure the two mounting brackets shown in Figure 3 to either side of the instru ment enclosure Lift tabwith slottedscrewdriver toset voltageor tochangefuse P...

Page 9: ...nt to mount the instrument in a top position 3 Install the chrome mounting screws through the brackets and into the T nuts for each instrument Secure the fastener with a Phillips screwdriver Figure 3...

Page 10: ...all connections with the AC line power OFF 2 Communications with the VAC 1000 Variable Attenuator Control DM 1000 Detector Multiplexer or lamp power supply is maintained through the DB37 con nector on...

Page 11: ...e wall socket 5 Turn the instrument on and check for proper operation 6 Load the Labsphere software package on your computer and configure the commu nications link with the SC 5500 instrument Artisan...

Page 12: ...e signals from both detector channels are amplified and digitized before providing input to the microprocessor Data process ing commands for the microprocessor are held in system memory by a 8 bit 32K...

Page 13: ...such as the Labsphere SDA 050 U or the GDA 050 U photodiode assemblies Current based photodiodes are the most common form of light detection today you will use the Silicon Germanium con nector for mos...

Page 14: ...setting the IEEE address in your software application You will need a null modem if you decide to use the RS 232C communications interface If your SC 5500 was purchased as part of an integrating sphe...

Page 15: ...record a dark current reading extinguish your light source and observe the detector reading on the LCD display Press the ZERO button to store the dark cur rent measurement into memory 5 Turn on your...

Page 16: ...u options associated with each feature To return to the detector readout display at any time press the CAL button CAL The CAL button provides operator access to the pre programmed calibration coeffici...

Page 17: ...portional sliding bar graph The default setting at power up is DIGITAL Digital Filter Enabling the digital filter reduces background fluctuations thereby providing more stable read ings Disabling the...

Page 18: ...ading is stored in memory and subtracted from all subsequent readings The green LED above the ZERO button will be lit when the feature is enabled NORM The NORM feature allows the operator to normalize...

Page 19: ...efficients for CAL0 and CAL1 are installed on all SC 5500 radiometers to display detector voltage and current respectively The CAL2 CAL3 etc calibrations are reserved for the standard part numbers lis...

Page 20: ...ame responsivities and correction multipliers discussed above are embedded into the EPROM in your SC 5500 so the instrument can be operated remotely or in stand alone mode Artisan Technology Group Qua...

Page 21: ...function via the terminal program the following command must be sent A0X The A0 is the actual command to instruct the SC 5500 to switch to the automatic ranging mode The X tells the SC 5500 to execut...

Page 22: ...it Display Hn H X Formats the detector readings for 3 1 2 digits on display and over computer interface H1X Formats the detector readings for 4 1 2 digits on display and over computer interface Digita...

Page 23: ...can use this software for command string characters to be sent to the SC 5500 Another mode would be via a communications program written in some form of intermediate language such as QuickBasic When w...

Page 24: ...the nature of the communication occurring i e SC 5500 as a TALKER and the interface board as a LISTENER Once the communication parameter has been established string commands as described in Appendix...

Page 25: ...el next to the input module DANGER Incorrect fuse installation can cause a potential shock hazard or subject the SC 5500 instrument to electical damage The voltage cartridge has been set at Labsphere...

Page 26: ...and flip the cartridge around so that the alternate voltage reading will now be displayed 3 Replace the existing fuses with the correct current rating The fuse rating for each voltage configuration is...

Page 27: ...dge no matter what the intended voltage configuration Install the appropriate replacement fuses into the cartridge as shown in Figure 12 and load the cartridge into the input module in the correct ori...

Page 28: ...r Service department at 603 927 4266 The SC 5500 uses a 1 amp 250 volt slow blow GDA type fuse Two 1A fuses are required if operating the SC 5500 at 230 VAC If a second fuse blows contact the Labspher...

Page 29: ...pA 0 05 2 0 1 5 10 nA 1 pA 0 05 1 0 1 2 100 nA 10 pA 0 05 1 0 1 2 1 A 100 pA 0 05 1 0 1 2 10 A 1 nA 0 05 1 0 1 2 100 A 10 nA 0 05 1 0 1 2 1 mA 100 nA 0 05 1 0 1 2 Voltage Input Characteristics at 25 C...

Page 30: ...ADC Resolution 20 bits Nonlinearity 1 count Calibration No trim pots All calibrations done digitally and correc tion factors stored in the EPROM Up to 100 calibration coefficients may be stored in th...

Page 31: ...SX 01635 000 Rev 5 28 Appendix B Schematics Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 32: ...5 000 Rev 5 29 Figure 7 Typical DB37 setup for the SC 5500 The active pinout depends on your sys tem configuration Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisan...

Page 33: ...us RS 232C Driver RS 232C IEEEDriver IEEEDriver IEEE488 GPIB Controller ZilogZ80Series M icrocontroller DataBus Display Board Front Panel Control Switches 8 bit 32KM emory 8 bit 32KEPR OM Serial Data...

Page 34: ...C int gpib_card 0 int dm_port 1 int sc_5500_address 10 int port_1_status 0 int port_2_status 0 int port_3_status 0 int port_4_status 0 void zero_on void SendIFC gpib_card Send gpib_card sc_5500_addres...

Page 35: ...0_address L0X 3 0 void unlock_front_panel void SendIFC gpib_card Send gpib_card sc_5500_address L1X 3 0 void filter_on void SendIFC gpib_card Send gpib_card sc_5500_address F0X 3 0 void filter_off voi...

Page 36: ...d SelectDetector_2 SendIFC gpib_card Send gpib_card sc_5500_address P1J1K2J3K4K5K6K7K8X 19 0 float get_sc_reading void void buffer float reading char tempstr 25 memset tempstr 0 25 buffer tempstr Send...

Page 37: ...position 0 through 255 you want the attenuator to assume char bit_values 25 position_values 25 temptr 25 junk 25 attenuator_values 25 int i j memset bit_values 0 25 memset position_values 0 25 memset...

Page 38: ...R Once the communication parameter has been established string com mands can be sent to instruct the SC 5500 to perform the required actions If during the process of sending commands to the SC 5500 a...

Page 39: ...LL IBCMD 0 scread Send MTA MLA CALL IBRD 0 r Receive into program the display value RS 232C Programming in C int sc_idComDev int create_IdComDev int comport This routine checks creates the comport and...

Page 40: ...n 8 1 Translates Device Definition String to DCB codes err BuildCommDCB CommString 0 dcb if err 1 err CloseComm idComDev return 1 Sets communication device to state defined in DCB err SetCommState dcb...

Page 41: ...0X strlen L0X void unlock_panel_serial void WriteComm sc_idComDev L1X strlen L1X void filter_on_serial void WriteComm sc_idComDev F0X strlen F0X void filter_off_serial void WriteComm sc_idComDev F1X s...

Page 42: ...SC 5500 for a reading wait_n_mseconds 1000 read the data back one character at a time until all characters have been read int BytesRead 0 DWORD current_time DWORD start_time GetTickCount start_time 1...

Page 43: ...y SC 5500 AutoRange setup PRINT 1 A0X Turn on Autorange SLEEP 5 Pause for command to be processed by SC 5500 PRINT 1 A1X Turn off Autorange ReadBack a detector reading PRINT 1 O0X Send back one displa...

Page 44: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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