Medusa MS-350 Manual

mDOS manual
1. Introduction
This manual describes how to use a Medusa gamma-ray spectrometer that is equipped with the Medusa
Detector Operating System (mDOS). All of the modern Medusa systems that are produced from 2018
onward are equipped with the electronics to accommodate this smart measurement system. This
instruction manual is valid for the following series of detectors listed below.
MS-350 Ultralight Drone and Handheld Detector
MS-700 Walking Detector
MS-1000/MS-2000 Drone-borne detector
MS-1200 Submergeable Detector
MS-2000 AGRI detector
MS-4000 Airborne Detector
The functioning and settings of these spectrometers can be inspected by connecting the spectrometer to
a network or directly to a PC and opening the website which is provided by the built-in Medusa
webserver.
2. Powering the system
The systems is based on the
detector is powered with a voltage in the range 9-18V or 9-36V. The provided cables have been fitted
with additional electronics to protect the detector from over/under-voltage and reverse voltage. During
normal operation the detector will consume about 2.5W with a peak of power consumption of 6W. Only
power sources that can provide this power are suitable for powering the detector.
The MDC-400 cables cables can be used in the voltage range 9-18V.
The MDC-401 cables and MDC-402 cables
When using the spectrometer system in combination with additional external sensors by using the
a PUCK , the power management is provided by this external device. The standard PUCK without a
power pack is equipped with electronics to protect the whole system from over/under-voltage and reverse
voltage. The PUCK has an input voltage range of 9-36V.
3. LED's
The detector has four LEDs embedded in the top cap. The orientation of the LEDs relative to the
connector depends on the detector series. Some detectors are mounted with the fastening wings down
such as the MS-2000 or the MS-4000, and some are mounted with the fastening wings up such as the
MS-350 or the MS-1000. The position described below is with the connector oriented below the LEDs.
During the starting process of the spectrometer all four LEDs are on.
Position Color Name
Top left Red PWR
Top right Red ETH
Bottom left Green SCN
Bottom right Green AUX
If both the bottom LEDs blink simultaneously with a frequency of 4Hz this means that the internal storage is almost full. The threshold percentage for
this signal as well as the action taken when the device is full can be set on the settings page on the webserver. The default action when all storage
space is taken is to overwrite the oldest data.
4. Accessing the mDOS interface through the built-in website
4.1. When an ethernet cable is connected
mMCA v2 electronics. As stated on the technical information page the
cables can be used in the voltage range 9-36V.
Function
This LED will be ON when the detector is provided with power.
This LED is turned on when the detector is connected over ethernet.
This LED will blink if a spectrum is collected.
This LED will blink if auxiliary sensor data is received (GPS, PTH, etc.) or if an snapshot is taken.
Medus