MEphisto Scope and MEphistoLab
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– Short Description
“MEphisto Scope” is a mobile multi-functional device in a compact metal box. The module is
powered from the PC via the USB interface; no external power supply is necessary. Both
analog inputs have BNC connectors for standard oscilloscope probes. Each channel has it’s
individual 16 bit A/D converter which gives you simultaneous sampling rates of 1 MS/s on
both channels. The input voltage range is ±10 V. Depending on the operation mode multiple
trigger modes are available.
The
2nd generation of the MEphistoLab software
was developed completely new and
provides a virtual instrument panel, which gives you easy and quick access to all functions of
the device. The following operation modes are provided
(if you don´t have a MEphisto Scope available
you can choose the option „Simulation“ via the menu „Setup – Options – Driver“):
•
„Oscilloscope“
2 channels, 1 MS/s max. per channel, voltage range ±10 V
•
„Logic Analyser“
16 channels (D0…15), 100 kS/s max. per channel, 5 V CMOS level
•
„Analog Data Logger“
2 analog channels, 100 kS/s max., voltage range ±10 V
•
„Digital Data Logger“
16 channels (D0…15), 100 kS/s max., 5 V CMOS level
•
„Analog Meter“
2 channels (AC
RMS
/AC/DC) with up to 6 virtual analog meters
•
„Digital I/O“
24 digital I/Os, each bit configured individually, 5 V CMOS level
•
„Data Viewer“
for analysing data already stored
•
„Offline Mode“
the model UM203 can store data on a SD card without a PC
•
„Script Editor“
Write your own code in C#, e. g. for automatic measurements
On demand you can change the program language (English/German) in the menu „Setup – Options – Language“
( program restart required). You find a detailed description of the MEphistoLab
2
software in the help file.
Hardware Specifications (UM202, UM203)
Analog Inputs
Number, resolution
2 x 16 bit
Total sampling rate
2 MS/s (2 channels)
Simultaneous channels
2
Input voltage range
±100 mV … ±10 V
Analog bandwidth (-3 dB)
500 kHz
Sample memory
256 kS
Trigger types
Level, window, edge,
slope (dU/dt), external, manual
Digital Inputs/Outputs
Number
24 I/Os
Configuration
each bit programmable as input or output (outputs can be read back)
Output current (25 °C)
sink: 10 mA, source: 5 mA
Signal level
+5 V (CMOS)
General Data
PC interface
USB 2.0 full-speed (USB 1.1 compatible)
Power supply
+5 V/0.85 W via USB interface
Reference ground
PC ground (PC_GND)
Connectors
Analog channels: 2 x BNC connectors (front panel)
Digital channels: 26-pin D-sub female (rear panel),
USB connector: Type B (rear panel)
Size (W x H x D)
110 mm x 35 mm x 136 mm (incl. connectors)
Operating temperature
0…70 °C
Installation
System requirements
for MEphistoLab
2
: Windows 7, Vista, XP (SP2), 2000 (SP4);
Microsoft
®
.NET Framework version 2.0 or higher, USB driver (32/64bit)
1. Connect the “MEphisto Scope” to a USB port of your PC using the USB cable included
with the device.
⇒
The hardware wizard will automatically detect the new USB device
and will display the message “New hardware found”. The follow ing description is to be
orientated towards Windows XP but applies analogously to other Windows versions.
However the dialogs may differ depending on your Windows version.
2. Insert the CD/DVD included with the package into the drive of your PC or make the
USB driver available by download
http://www.meilhaus.org/downloadserver/mephistoscope.htm
3. In the hardware wizard select the option “Search for a suitable driver for my device
(recommended)” and click “Next”. If Windows displays a message, telling you the driver
is not Microsoft certified, just skip this window.
⇒
The system driver will be installed and the entry “MEphisto Scope” will be added in
the device manager under the device class “Meilhaus DAQ Boards”.
4. End the installation of the system driver by „Finish“ and continue with the installation of
the “MEphistoLab” software as follows:
5. Navigate to the setup program of the MEphistoLab
2
software on CD/DVD or to the
directory you unpacked the driver to after download. The default path on ME-Power-DVD
is [Drive]:\Software\MEphisto-Scope\MEphistoLab2. Start the installation by double-
clicking the file “MEphistoLab2.msi”.
⇒
After the installation has finished you will find the MEphistoLab
2
as well as the help
file, further documentation and a „Quick Start Video“ in your Windows “Start” menu
under “Programs - Meilhaus Electronic - MEphistoLab2”.
The 26-pin D-sub female connector:
External Trigger Input
„Logic Analyser“ &
„Data Logger Digital“:
D0…15 are used to be input
channels in that operation
mode. On demand a „Pattern“
(rising/falling edge, high/low
level) can be definied as the
trigger event.
Attention!
D16…22 are reserved in
the operation modes „Logic
Analyser“ and „Data Logger
Digital“ and may not be
connected!
„Digital I/O“:
D0…23 can be configured as
input or output individually.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
D16
D17
D18
D19
D20
D21
D22
D23
(EXT_TRIG)
D8
D9
D10
D11
D12
D13
D14
D15
PC_GND
1
2
3
4
5
6
7
8
9
D0
D1
D2
D3
D4
D5
D6
D7
PC_GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
D16
D17
D18
D19
D20
D21
D22
D23
(EXT_TRIG)
D8
D9
D10
D11
D12
D13
D14
D15
PC_GND
1
2
3
4
5
6
7
8
9
D0
D1
D2
D3
D4
D5
D6
D7
PC_GND
… optional for the operation modes:
• „Oscilloscope“
• „Logic Analyser“,
• „Data Logger Digital“
• „Data Logger Analog“
Stand-alone Data-logger (UM203):
„Online“ operation:
via USB cable like UM202
„Offline“ or „Stand-alone“ operation:
without connection to the PC. Logging will
be started by insertion of the SD card into
the slot. For reading the data on the SD card
a standard SD card reader is required.
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