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Summary of Contents for Admesy hera
- Page 1 spectrometer...
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Page 2: Table Of Contents
Auto-range parameters ............. 18 RS232 ..................6 Ethernet ..................6 Auto-range in practice ............... 18 Device drivers..................7 Programming Hera for auto-ranging ......... 19 USB ..................... 7 Auto-ranging recommendations ..........19 RS232 ..................7 Hera measurement results ..............20 Operating modes & triggering ............20... -
Page 3: Introduction
VIS spectrometers ranging from 380 to 780nm (Hera 01), and 360 to 830nm (Hera 02) and UV-NIR with a range of 200 to 1100nm (Hera 04). The Hera series is available in a variety of optical systems: 5, 10 or 20mm collimating lens or a 1cm cosine corrector. -
Page 4: Interfaces
2 Interfaces 2.1 USB interface The USB B connector is used to connect the Hera to a PC/Laptop. The Hera uses the USBTMC class protocol and can therefore be used directly with third party provided VISA compliant libraries like NI-VISA. Hera can be used USB powered in case the host provides enough current. -
Page 5: Trigger In/Out
2.5 Power connections The Hera has two trigger connections. One trigger output and one trigger The Hera should be connected to USB with sufficient power or using a 9V input. The connectors are SMA connectors. When triggering is enabled, DC power supply to the RS232 connector. When using RS232 the the trigger output line will be set to a high level once the measurement has spectrometer needs to be powered via the external adapter. -
Page 6: Communications Protocol
Hera01 (USBTMC device driver, Vendor ID: 0x23CF, Product ID 0x1023) When the Hera is connected to the host, it will start the Hera firmware. As soon as the firmware is idle to receive commands, the Power LED goes to the ON state. The Admesy bootloader is a RAW USB device and in order to use this device in Windows, a driver must be installed which is supplied by Admesy. -
Page 7: Device Drivers
· · available Table 3 Supported operating systems. 1 Not tested: Available, but not tested by Admesy, 2 Native Kernel: Driver included with OS. 2 Windows XP SP3 is supported: Windows official support has ended as of April 8 2014... -
Page 8: Command Set Description
5 Command set description 5.1 Commands The functions of the Hera can be best described via the following Command table Valid command Notes syntax examples categories. :SENSe: INT 50000 :sens:int 500000 Sets the integration :sense:int 500000 time of the Hera... -
Page 9: System Commands
The integration time setting can be :*CLS None Clear status varied from 2.5ms to 20s. It is specified in μs. Results from the Hera :*IDN? None Identification query include a clip and noise indication which indicate, whether the measured... - Page 10 Command syntax Parameters Range Purpose Command syntax Parameters Range Purpose 2500 – “off” or :SENSe:INT Int time Set integration time :SENSe:SP:SBW Calibration Set calibration matrix μ for the spectrometer 20000000 s) of the matrix “user” spectrometer Activate or deactivate :SENSe:CAL User cal :SENSe:INT? None...
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Page 11: Measurement Commands
5.5 Measurement commands Table 8 and 9 show the measurement commands of the Hera. The Special Parameters Range Purpose MEASure commands measure the requested values using the set measurement averaging and integration time and returns the result in ASCII format. The... -
Page 12: User Eeprom Commands
Reads the configured delay before triggering CONFigure:TRIG Table 10 shows the commands which can be used to store values in the DELAY? user EEPROM space. It is advised to reboot the Hera after writing new :EEPROM: IP address Example: Configures the values to the EEPROM. - Page 13 0 – 2 :EEPROM: Reads the values of configured white point CONFigure: 0 – 2 the spectrum matrix SPSBW:READ Column WHITE? from Hera :EEPROM: None 0 Radiant Reads the calibrated :EEPROM:READ: None Reads the user power unit as set from factory...
- Page 14 Command syntax Parameters Range Purpose 1 – 255 :EEPROM:CONFi Frequency Auto-range parameter: frame frequency of the gure:AUTO:FREQ (Hz) source (display) to measured :EEPROM:CONFi None Reads the set frequency gure:AUTO: FREQ? 1 – 100 :EEPROM:CONFi Adjmin (%) Auto-range parameter: The minimum level to gure:AUTO: adjust to ADJMIN...
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Page 15: Returned Results
5.7 Returned results :MEASure command return their result in ASCII formatted floating point as shown below. (X,Y,Z,clip,noise) → %f,%f,%f,%d,%d\n X,Y,Z can be substituted for Y,u,v or other colour spaces. :SAMPle command return all measurement data also in ASCII format., except the :Sample:Y function. -
Page 16: Measurement Example
Open device (VISA open, RS232 port init) The Hera uses default settings when the device is started. These can be programmed by the end user so that the device starts with the same settings each time it is connected. -
Page 17: Autoranging
In case the measured result is autoranging function can also be fine-tuned to reach better stability levels either to low or too high (clip), than the Hera will adjust to a better level. by setting a few parameters. Autoranging can be controlled by 3 The following graph shows how levels inside the Hera work. -
Page 18: Auto-Range Parameters
Adjmin is set from 1-100, which means 1-100% of known patterns are measured. Setting an integration time that is nearly the Adjmax level (Adjmax is fixed by Admesy). right, 1/frequency (Hz) is preferred, as it optimizes the speed for adjusting the auto ranging settings and thus provides optimal results. -
Page 19: Programming Hera For Auto-Ranging
Those are shown in the next chapters. There are a lot of ways to fine tune the Hera for each application. Take this Display without PWM: This can be measured using almost any document into consideration and apply the comments correctly. -
Page 20: Hera Measurement Results
The operating mode only matters in trigger mode. The mode is used to many other mini spectrometers the Hera differs in great processing power. send back results by USB, Ethernet or RS232. The modes of the Hera are: Spectrum conversion to XYZ is done inside the Hera and so are all colour ... - Page 21 Admesy B.V. The material in this document is subject to change. No rights can be Sleestraat 3 derived from the content of this document. All rights reserved. No part of 6014 CA Ittervoort this document may be reproduced, stored in a database or retrieval...
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