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mca_par("npts", value) — sets the number of channels to be read out to value . Themaximum number of channels is 1,024.mca_par("delay") — returns the delay time in seconds that spec sleeps after theMCA is cleared.mca_par("delay", value) — sets the time for spec to delay after sending the clearcommand. The hardware does require some delay. Some users have reported1.5 seconds are needed, others report 0.1 seconds is adequate. The defaultvalue is 0.1 seconds.LeCroy 3512 Spectroscopy ADCconfig file:CA_LC3512 = slot_numberedconf CAMAC screen:Slot Module Unit Description1 LC3512 LeCroy 2301 interface for qVT MCALeCroy 3588 Fast Histogram Memoryconfig file:CA_LC3588 = slot_numberedconf CAMAC screen:Slot Module Unit Description1 LC3588 LeCroy 3588 Fast Histogram MemoryKeithley2001 Multimeter (GPIB)config file:GP_K2001262 HARDWARE REFERENCE INTERIM WORK-IN-PROGRESS (8/16/01) NOT FOR GENERAL DISTRIBUTION
Oxford/Tennelec/Nucleus PCA Mutlipor t, PCA II, PCA-3config file:GP_PCA_M = gpib_addressPC_PCA3 = base_addressPC_PCAII = device_name base_address INTR|POLLedconf devices screen:MCAs DEVICE ADDR MODE TYPEYES 7 The Nucleus PCA Multport (GPIB)YES 0x210 The Nucleus PCA-3 MCA BoardYES 0x1e0 POLL The Nucleus PCA II MCA BoardYES /dev/pca 0x1e0 INTR The Nucleus PCA II MCA BoardThe PCA II MCA can be used in either a user-level I/O mode or in an interruptdrivenmode with the CSS provided driver. The interrupt-driven mode allows deadtimecorrections and more accurate counting times. See the drivers/README file inthe spec distribution for information on installing the driver.If using the interrupt-driven mode, note the following: Apparently, the PCA II doesn’ttrigger an interrupt on some PC mother boards. This problem can be fixed by changingthe value of the resistor labeled R12 on the “PCA2 Memory Card” circuit diagram.This resistor is located near the lower left corner of the main board whenviewed from the component side with the connector fingers pointing down and theinput BNC to the right. R12 is about a centimeter down and to the left of the U26 IC.The circuit diagram indicates the resistor’s value is 2K, however the boards seem tobe shipped with a 1K resistor (brown-black-red stripes). Soldering a second 1K resistoralongside R12 and in parallel electrically will lower the resistance to 0.5K, whichseems to work. (This modification was suggested by the manufacturer.)FunctionsThe mca_par() function controls the board’sbehavior as follows:mca_par("clear") — clears the channels of the current group.mca_par("run") — programs the board with the current parameters and starts acquisition.Note that the tcount() and mcount() functions, as used in the variouscounting macros will also start PCA II acquisition.mca_par("halt") — stops acquisition. Note that the PCA II will also be halted whenthe tcount() and mcount() functions, as used in the various counting macros,complete their count intervals or are aborted.mca_par("group_size") — returns the current group size.INTERIM WORK-IN-PROGRESS (8/16/01) NOT FOR GENERAL DISTRIBUTION HARDWARE REFERENCE 263
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spec X-Ray Diffraction SoftwareUSER
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specX-Ray Diffraction SoftwareCerti
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TABLE OF CONTENTSUSER MANUAL AND TU
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Reciprocal Space Macros ...........
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Preface For the Interim ManualWe ap
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USER MANUAL AND TUTORIALS
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files is then identified (/usr/loca
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denotes variable parameters you sup
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spec also keeps track of software m
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13.FOURC> mvr th 114.FOURC>will mov
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8 0.98 0 0 17603 38839 19 0.99 0 0
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4.FOURC> p date(1e9)Sat Sep 8 21:46
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Controlling Output Tothe Printer an
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By convention, global variables in
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16.FOURC> for (i = 0; i < MOTORS; i
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When a macro definition contains ar
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38.FOURC> undef com39.FOURC> prdef
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43.FOURC> lsdef *scanEscan (1448) a
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diffractometer. For example, they m
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set_lim(motor_number, low, high) an
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66.FOURC> getcounts; printf("%s = %
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the number of bytes is less than n
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PLOT-> fnscans.4 options scan-numbe
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#S number Starts a new scan. number
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ShowscansThe showscans program is a
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REFERENCE MANUAL
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IntroductionThe material contained
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ArraysArrays are formed using squar
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Numer ic ConstantsNumeric constants
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!! Redo the previous command.!14 Re
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In some installations, spec is inst
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ExitingA spec session is normally t
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DEBUG — is a user-assignable nume
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USER — is string valued and is se
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The concatenation operator comes in
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The second form of the for statemen
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These are the grammar rules:express
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local identifier-list [ ; ]syms pat
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Utility Functions and CommandsAll f
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.sp N — spaces N lines. Without a
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¢The formatting commands:.RB .BR .
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"ischr" or "−c" — Returns true
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polled devices, spec needs to perfo
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"show_prdef_files" — When this mo
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EOS sequence are read or until the
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¡with dlog or ends with .dlog . De
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10.FOURC> def change_it ’{11.quot
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tty_cntl(cmd) — Sends terminal-sp
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Commands For Var ia blesglobal name
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¤£ ¢prdef pattern ... — As abo
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at the end of the line.Within a mac
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config file. Built-in code for the
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RS-232 Serial InterfacesSerial func
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vme_put32(addr, data [, dmode ])
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In addition, device-dependent value
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correction. If val is given, then t
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¡and is set in the config file. Th
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¡data_grp(grp, npts, wid) — Conf
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"min" — Returns the minimum value
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"xlog" — Use a logarithmic x axis
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continued line, appropriate for sav
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LIBS= parameters. If the tools prov
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¡void set_return_data(double *x, i
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split(string, array) — Splits the
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STANDARD MACRO GUIDE
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IntroductionThe standard macros inc
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the argument is not a valid mnemoni
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Utility MacrosUNIX CommandsThese si
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# View (and modify), then reread co
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if ("$1" != ".") {DOFILE = "$1"if (
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Star t-up MacrosThese macros ask fo
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Motor Macrosmv motor posmvr motor p
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Change a motor limitdef set_lm ’i
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# Where - all motorsdef wa ’waitm
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# "count" is the basic macro to cou
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Reciprocal Space MacrosThe followin
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Scan MacrosThe following sections s
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Basic Reciprocal Space Scanshscan s
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def Pheader ’printf("\n Setpoint
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’}Here are examples of _settemp m
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Pr inter Initializa tion MacrosThes
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’X_L = motor_name(_m1)_sx = _s1 ;
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space scans, the limit check must l
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}}Pheaderprintf("\noffpprintf(" ")_
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# The loop macro, called by all the
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FOUR-CIRCLE REFERENCE
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IntroductionWhen invoked by the nam
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Once properly configured, diffracto
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Four-CircleModesAs noted above, bec
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asurface, keeping α small will kee
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¢¢¢¢Sector sSectors correspond
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Four-CircleFilesMost questions rega
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U[14] g_l0 or0, setor0 L of primary
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’gpset A[mA[1]] g_u01gpset A[mA[2
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global REFLEX # Variable for file n
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To calculate the new lattice parame
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ADMINISTRATOR’S GUIDE
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IntroductionThe first section of th
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The distribution will be in tar for
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¢KSC 3929 SCSI-CAMAC file location
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Installing Driver sIn the early his
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Fine Tuning the HardwareConfigurati
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...*gparam[3] = 1.54;...if (*gparam
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Makefile, and /usr/local/lib/spec.d
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Ena bling E/ISA I/O Por ts On HP 70
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ˆW Gain wizard access to set prote
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CA_LC2301CA_LC3512CA_LC3521CA_LC358
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MCU_O As above, but with old PROMsM
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config file that has the most motor
Page 221 and 222: the edconf program set-user id spec
Page 223 and 224: HARDWARE REFERENCE
Page 225 and 226: Introductionspec includes built-in
Page 227 and 228: DSP 6001/6002 CAMAC With No Driverc
Page 229 and 230: Kinetic Systems CAMAC Softwareconfi
Page 231 and 232: Any of the National Instruments boa
Page 233 and 234: National Instruments SB-GPIB Ver 1.
Page 235 and 236: modified version of the standard li
Page 237 and 238: Bit 3 Model 616/617 PCI-VMEBit 3 Mo
Page 239 and 240: Motor Controller sAdvanced Control
Page 241 and 242: panel controls. Youshould consult t
Page 243 and 244: Huber SMC 9000 (GPIB)config file:GP
Page 245 and 246: motors on the board) and clears the
Page 247 and 248: translation stages, the maximum val
Page 249 and 250: MOTORS DEVICE ADDR MODE NUM TYPEYES
Page 251 and 252: The driver is contained in the file
Page 253 and 254: 30.FOURC> print motor_par(tth, "rea
Page 255 and 256: free-axis-displacement commands "L+
Page 257 and 258: PMC Corporation DCX-100 (Serial and
Page 259 and 260: Motor ParametersThe steps per deg/m
Page 261 and 262: Timer s and CountersAm9513-based Co
Page 263 and 264: DSP RTC-018 Real Time Clock (CAMAC)
Page 265 and 266: Kinetic Systems 3610 6-Channel 50 M
Page 267 and 268: Or tec 974/994/995/997 NIM Timer s
Page 269 and 270: Setting Operational ParametersThe c
Page 271: mca_par("first_ch") — returns the
Page 275 and 276: mca_par("preset") — in PHA mode,
Page 277 and 278: ¢REFERENCESJournal articles descri
Page 279 and 280: camac program, 199cat macro, 127cd
Page 281 and 282: opening, 6selecting, 6standard form
Page 283 and 284: saving to output device, 132scan, 1
Page 285 and 286: number,35, 37output, customizing, 1
Page 287 and 288: wait() function, 33, 68, 77, 78, 99
Page 289 and 290: ¡spec (1) (CSS Utilities) spec (1)
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