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EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
ELR 9000 Series
2.3.10 Connecting the analog interface
The 15 pole connector (Type: Sub-D, D-Sub) on the rear side is an analog interface. To connect this to a control-
ling hardware (PC, electronic circuit), a standard plug is necessary (not included in the scope of delivery). It is
generally advisable to switch the device completely off before connecting or disconnecting this connector, but at
least the DC input.
The analog interface is galvanically isolated from the device internally. Therefore do not con-
nect any ground of the analog interface (AGND) to the DC minus input as this will cancel the
galvanic isolation.
2.3.11 Connecting the USB port (rear side)
In order to remotely control the device via this port, connect the device with a PC using the included USB cable
and switch the device on.
2.3.11.1 Driver installation (Windows)
On the initial connection with a PC the operating system will identify the device as new hardware and will install
the driver. The driver is a Communications Device Class (CDC) type and is usually integrated in current operating
systems such as Windows 7 or XP and is therefore not provided additionally. There are, however, versions such
as Windows 7 Embedded in which the class of driver is not installed or does not function.
On the included CD or USB stick is a driver INstallation File (*.inf) which can install the device as a virtual COM
port (VCOM).
In case there is only an older version of the INF available, which is not yet digitally signed, the
driver can only be installed on Windows 7 after confirmation, while Windows 8 and 10 refuse
to install it. For these Windows 8, you should get the updated INF file from our website or upon
request.
For Windows 10 users: this Windows version installs a default driver for CDC devices (see
above), which then are all listed as “USB Serial Port” and not as “ELR 9000 Series” in the
Windows Device Manager. In order to prevent that, you can install the driver (*.inf or installer
*.exe) prior to connecting the USB. To change the device name later, you can still install our
driver installation file by opening the Windows Explorer, right-clicking the *.inf file and select
“Install” from the context menu. Alternatively, use the installer (*.exe).
Following recognition, the USB equipment will first be listed in the Windows Device Manager as “other hardware”
(Windows 7) and the driver may possibly not be fully installed. In this case take the following steps:
In Device Manager click with right mouse button on the not fully installed hardware. Select “Update driver”
1. Windows will ask if the driver should be automatically searched or whether it should be located and installed
manually. Select the latter (second choice in the dialogue window).
2. In the next dialogue window the driver source path will be determined. Click on “Search” and enter the folder
of the USB driver from the “Drivers & Tools” CD or the path to the downloaded and unpacked driver. Allow
Windows to install the driver.
2.3.11.2 Driver installation (Linux, MacOS)
We cannot provide drivers or installation instructions for these operating systems. Whether a suitable driver is
available can be found out by searching the Internet.
2.3.11.3 Alternative drivers
In case the CDC drivers described above are not available on your system, or for some reason do not function
correctly, commercial suppliers can help. Search the Internet for suppliers using the keywords “cdc driver windows“
or “cdc driver linux“ or “cdc driver macos“.
