1. Eberline Asp 1 Manual Download

46 ASP-2 Technical Manual Section 11 Download Sends the contents of the window (all three screens at once) to a ASP-2 connected to the host computer. OK Downloads as above, then closes the window. Cancel Closes the window without saving its contents to the ASP-2. Edit: Instrument Parameters Serial Number ASP- This is the instrument s identification number, and is initially set to the factory-assigned serial number printed on the 2 case.

Scaler Precision The measurement variance, expressed as a percentage, to which the instrument will count in scaler mode when Fixed Precision rather than Fixed Time scaler counting is selected. ASP-2 Last When calibrating an ASP-2, enter the current date in these Page 11-347 ASP-2 Technical Manual Section 11 mode which count three fields. This information is not checked by either the Instrument or the host program. Enter dates in month- Cal.

Date day- Alarm Editing Auto Ranging Beep On Auto Range LCD Function Scaler Count Time Mode Scaler Display Units Star Key Integrate Mode year format. Enables or disables editing of the rate and dose alarm Setpoints from the ASP-2 front panel. To use this feature, place the unit in CHECK mode and use the STAR KEY to RATE ALARM (ral) or DOSE ALARM (dal) screen. If editing is enabled, the RANGE UP and RANGE DOWN buttons may be used to change the alarm limits. Switches the instrument between automatic and manual ranging.

If this feature is enabled and automatic ranging is enabled, the ASP-2 will produce audible beeps whenever a new range is selected by the instrument. The ASP-2 offers two display modes; a Digital Readout in which both the mechanical pointer and numeric display show the same value, and a Range Multiplier mode in the pointer provides significant digits) while the lower If the ASP-2 supports scaler counts, either a fixed time or a fixed precision may be selected. If fixed time is specified, the time is specified in the Channel Parameters window and different values may be set for each channel. In fixed precision mode, the desired variance is entered elsewhere in this window. Scaler count results may be displayed as either the dose accumulated during the count or as a rate averaged over the counting interval. While operating in INTEGRATE mode, the STAR key may be assigned either of two functions while in this mode.

The first is to zero the display and re-start dose integration. As an alternative, this key may be set to provide a temporary rate indication without exiting from INTEGRATE mode or stopping the accumulation of dose data. Star Key An ASP-2e, which includes a SCALER counting mode, may Ratemeter Mode be configured to perform a scaler count cycle without switching out of RATEMETER mode. This provides a quick means for accurately characterizing hot spots located during frisking.

48 ASP-2 Technical Manual Section 11 NOTE: SCALER and INTEGRATE modes are not supported by the base model ASP-2. Edit: Probe Parameters Serial Number Model NOTE: Probe Last Cal.

Date Dead Time Numeric serial number of the probe for which this instrument has been calibrated. Alphanumeric model designation of the probe. The probe model and serial number are continuously scrolled across the instrument sdisplay while in CHECK mode.

It is the operator s responsibility to verify rifythat the probe so identified is actually the one connected to the ASP- 2 before switching into any measurement mode. Because the display is made up ofseven-segment numbers, only a subset of the alphabet can be correctly shown. When calibrating a probe with this instrument, enter the current date in these fields (in month-day-year format). The probe s dead time in microseconds should be entered here.

Readings taken in high fields will then be corrected statistically for detector pulse collisions. Page 11-549 ASP-2 Technical Manual Section 11 Max High Under no circumstances will the ASP-2 output a probe Voltage voltage greater than the limit entered in this field. This is a safety feature intended to protect the probe. NOTE: Overrange This voltage limit will not be exceeded under ANY conditions, including during calibration or instrument test. Before attempting to calibrate the high voltage power supply, verify that this setting is at or above 1250 Volts. Enter the detector pulse rate in counts per second at which the overrange alarm should be triggered.

Should this happen, it is necessary to power the ASP-2 completely OFF before resuming measurements. Overrange values are in counts per second AFTER DEADTIME CORRECTION. If the overrange point for a detector is known in dose rate units, such as R/h, a deadtime alarm point may thus be calculated easily using the probe s calibration constant. 50 ASP-2 Technical Manual Section 11 Edit: Channel Parameters Channel Channel Type Selects either the main or PHA channel parameter set for display and editing. NOTE: This control is not displayed for a single-channel base model ASP-2. Select the type of radiation to be measured from this list by using the up and down arrow keys on the PC keyboard, or click on the arrowhead at the right of this field to display a list of choices and select one with the mouse cursor. All unused channels (typically the PHA channel of an ASP-2e used with a single-channel probe) should be set to type NONE.

This will prevent the operator from accidentally selecting an undefined channel. Units Offers a range of dose, rate and activity units in which a channel may be calibrated. The same base units are used for both rate and dose measurements; if R/h is selected for dose rate, dose will be integrated in R. Response Times Three response times (slow, medium and fast) may be entered for each defined channel. The operator may step Page 11-751 ASP-2 Technical Manual Section 11 through these selections by pressing the Response button. Selected Window Selecting Lower will count only detector events which produce pulses above the lower window threshold, but below the upper window. Selecting Upper counts only those pulses which cross the upper window energy threshold.

The Both option sums counts from both energy windows. Since PHA (Pulse Height Analysis) requires both lower and upper energy limits, only the Lower window is available for the PHA channel of an ASP-2e. Note that when Both windows are selected, the ASP-2 will apply the lower window calibration constant to counts from the lower energy window and the upper cal constant to counts in the upper window, then display the sum of these two calculations. Probe Voltage Scaler Time This slider control bar may be positioned anywhere between zero and the maximum high voltage defined in the Probe Parameters screen. Sets the time, in seconds, used for fixed-time scaler counts. Upper/Lower Window These windows contain two identical sets of parameters which control the energy thresholds, calibration constants, alarm setpoints and speaker click dividers for the upper and lower detection windows, respectively.

The Selected Window buttons described above select which window(s) are actually used for counting. Threshold Counts/unit Integrate Alarm Rate Alarm Click Divider Slider controls which set the voltage threshold above which pulses are counted in each window. Always set the upper window threshold to a value greater than that for the lower window. Calibration constants expressed as the number of detector pulses per display unit (ie. Counts/R, Counts/Sv, etc.).

Integrated dose at which an alarm will be posted. This value is used only by instruments which support integrating modes. Setting this alarm limit to zero disables dose alarms entirely. Instantaneous dose rate at which an alarm is posted. Set this value to zero to disable rate alarms. The number of detector events required to produce one click from the ASP-2 s speaker.

Useful for detectors with high background count rates. 52 ASP-2 Technical Manual Section 11 EDIT: Host System Properties The parameters in this window are used to configure the ASP-2 host program. Communication Selects which of the host computer s serial data ports the Port program will use when communicating with an ASP-2. Selected Address Although it is possible to assign each ASP-2 a unique address for use in local networks, all instruments will respond to a broadcast address of zero.

When communicating with only one instrument at a time over a serial cable, set this field to zero. Simulator Active When this box is checked, the host program simulates an ASP-2 rather than attempting to talk to a real instrument via the serial port. This is useful for training and experimental work. Page 11-953 ASP-2 Technical Manual Section 11 Edit: Load / Save Setup Parameters Edit: Enter / Edit Passwords Instrument and probe parameters may be saved from an ASP-2 to the disk drive of a computer, then reloaded into the instrument at a later time. This makes it possible to calibrate a single instrument with several different probes, then restore any of these setups when required.

Eberline Asp 1 Manual Download

Typical setups may also be defined for various probe types and used as starting points for individual calibrations. The commands which perform these functions are included under the Edit heading: Load Setup Parameters and Save Setup Parameters. When either of these is selected with the mouse pointer, a smaller window pops up offering the options Instrument Parameters and Probe Parameters. The first transfers the information such as the instrument serial number and configuration. The second copies general and channel parameters for the probe to or from a disk file. Once any of these actions is chosen, a directory window opens and the operator is asked to select a destination or source file.

If these commands are displayed in gray (rather than black) text, a higher level password is required (see next section). To prevent unauthorized tampering, it is possible to password protect various functions of the ASP-2 host program. Three levels of security are provided to restrict which functions are accessable to specific personnel: Level 1 Level 2 Level 3 This password permits changes to the host system properties such as communications port selection and enabling/disabling the instrument simulator. Allows access to stored information including calibration reports and voltage plateau graphs. Grants full access and the ability to change parameters which affect instrument operation. Entering the level 2 password also provides access to level 1 functions, while the level 3 password unlocks all level 1 and 2 commands.

The factory default for all passwords is Eberline. Note that if the file ASP2.DAT is ever deleted, this default value will be restored, since all password changes are encrypted into this file. If security is not an issue, the password may be made part of the Windows Page 11-10.

54 ASP-2 Technical Manual Section 11 command line which launches the host program. Once this is done, no additional passwords will be required. The modified command line will typically be something like: C:ASP2ASP2.EXE Eberline. Calibration: Run Plateau This menu is accessed through the Calibration menu. It automates the process of running a plateau during probe calibration. The following information must be entered by the operator; the last four fields of data are updated by the program while the plateau is running: Count Time The time (in seconds) to count at each voltage step.

Starting Voltage Initial probe voltage Ending Voltage Voltage Step Max Count Rate Graph name Last voltage at which to take a count. Voltage step size between successive counts. A count rate at which the detector is assumed to be breaking down internally. This will stop the plateau. Label (such as probe ID) to be printed on plateau graph. 55 ASP-2 Technical Manual Section 11 File Name Disk file in which to save results (must end in.grf). After entering the necessary parameters, click START to begin the plateau process.

Calibration: Determine Calibration Constant Once the basic operating parameters (probe voltage, detection thresholds, etc.) Have been entered, this window may be used to calibrate the ASP-2 and probe. Channel Window Count Time If more than one channel is available, the one to be calibrated must be selected by clicking here.

When a channel is selected, the window specified in the Channel parameters is automatically selected. Cs 1.6 mapas de autos. For background counts, this value may be entered manually. The calibration and dead time functions count as long as necessary to obtain a statistically valid value. The remaining time is re-calculated periodically throughout the count cycle. Page 11-1256 ASP-2 Technical Manual Section 11 Calibration Field Enter the field to which a probe is exposed for determination of a calibration constant. Dead Time Field Enter the field used to calculate probe dead time. Background Cal Const.

Dead Time Done Select this button, then click on Start to begin a background count for the number of seconds shown in Count Time. This button, followed by Start, calibrates the instrument and probe. The calibration field and background count rate shown will be used; count time will be calculated by the program. Click here, then Start to begin a deadtime measurement. The previously-determined background and cal constant will be used, and the program will calculate the required count time. Note that any of the above count cycles may be cut short by clicking on the button.

The value determined as of that time will be used. Clicking on Done while no count is in progress will exit to the main program window. Clicking on Down Load will write the displayed calibration constant and dead time to the ASP-2.

Calibration: Calibration Report Use this command to print a calibration report or certificate: Cal Report Certificate Include. Report File Select this option to produce a full calibration report, complete with title, signature block, etc. Omits the title and signature block.

Used for printing calibration data on a certificate form which already includes these items. Check the items which should be included in the printout. In adition to the instrument setup and probe information, a file named USERTEXT.TXT may be created with an editor such as Windows Notepad and added to the report. Checking the Linearity Data Fields button will insert three blank lines on which data may be written after the report is printed. If the Save button is clicked, the report will be written to this file instead of sent directly to the printer. The file may be Page 11-1357 ASP-2 Technical Manual Section 11 edited using Notepad or another editor before printing. To avoid overwriting existing files, select unique names for each.

Page Setup Positions the printed information using the margins This may be necessary with some printers in order to center the report on a page.