AMS42/84
5B Amplifier System
Amplifier Technology at its Best.

Compact or 19 Inch.
Get your amplifier technology wrapped up with
the AMS42/84. Available in a robust aluminum
housing as a mobile tabletop unit (AMS42) with
skid-proof, tip-up feet for 8 channels or as a
16-channel stationary version (AMS84) for 19''
rack systems.
Modular Concept.
Equip Individually. Be Flexible.
The AMS device is equipped with cassettes, on
which the required 5B measuring amplifiers are
mounted. The variety of available 5B modules
allows for the optimum adaptation of the
AMS42/84 to any special measuring task.
Choose Connector.
Mount 5B Amplifier. Done.
The available plug-in cassettes have different
connectors on the front panel. Depending on
the sensor or signal to be connected, the
suitable cassette can be chosen. The 5B
module only has to be fixed on the cassette
now and be integrated in the AMS system.
Clearly Safe.
Most of the 5B modules feature galvanic
isolation between the channels and from the
data acquisition and control system. This
perfectly protects the whole system against
high potentials and interferences.
Well Supplied.
The AMS42/84 is operated with 9-40V via an
external power supply.
Connection to the DAQ System.
The amplifier outputs are available at a D
Sub37 female connector. They are connected
to the input lines of a data acquisition system.
Combining the AMS42/84 with a measuring
card or DAQ system from bmcm makes a
powerful measurement system.
Accessories. Just Makes it Easier.
To individually equip the AMS devices, various
5B modules and plug-in cassettes as well as
other accessories (e.g. external power supply,
carrying handle, connection cable) are
provided.
Versions and Options.
Something for Everybody.
AMS42/84 versions with an integrated DAQ
system (USB, LAN) are also available. With the
8-channel extension AMS-EXT8. the number of
channels can optionally be increased to 16 in
the AMS42.

1 Installation
1.1 Assembly
a) Equip the AMS42/84 with the plug-in cassettes (see chapter 4.2) carrying the required 5B
modules.
b) Carefully push the cassette along the guide bars of the relevant slot until the 7-way pin
connector of the cassette and the pins of the 5B module are plugged into the corresponding
connectors on the AMS backplane.
c) If using the AMS42 with the option AMS-EXT8 (see chapter 4.4), the additional cassettes are
mounted on the back of the device.
d) For a tight installation, fix the front panel at both ends with screws to the housing. Bridge
unneeded slots by a blank panel (AMS-K-BLANK) to protect the device against outside
influences.
e) If the AMS84 is mounted to a 19'' rack system, the relevant input wiring should be prepared first
before attaching the device to the rack system with screws.
1.2 Software Installation and Start-up Procedure
a) Connect your PC data acquisition system to the 37-pin D-Sub female.
b) Attach an external power unit to the 3-pin DIN coupling for 9-40V power supply (use a supply
cable with a cross sectional area >1mm2) and turn on the AMS42/84 by pressing the switch to
"1" (ON) (see chapter 2.1 and 2.2).
c) Signals are attached at the specific connector of the respective AMS cassette panel.
• To change the cassettes, the power of the AMS device must be turned off!
• If the AMS system is operated standalone, additional grounding to enhance shielding is
recommended but not mandatory.
2 Connections / Assignments
All available connectors and operating elements of the
AMS42/84 are accessible on the right-hand side of the
device front.
2.1 Switch and LED
The AMS42/84 is turned on (press "1") and off (press "0")
with the switch.
The green LED "ON" indicates the operation of the device.
2.2 Power Supply "DC In"
The AMS device is supplied with power (9..40V) via the 3
pin DIN plug. A power supply unit ZU-PW40W (24V, 1.67A
DC) is optionally available.

2.3 Analog Channels
8 (AMS42) or 16 (AMS84) analog signals can be connected to the
amplifier inputs available at the respective connectors of the cassette
panels.
Their assignment is illustrated in the data sheet of the AMS-K cassettes.
To connect a PC data acquisition system, these analog outputs are led
out to the 37-pin D-Sub female.
Depending on the application, the shield of the analog input cables can be applied to ground or 0V. Be
sure to connect at one end of the cable only. Run the signal ground separately if possible. Lay input
cable separately if possible.
• The housing of the D-Sub37 female is connected to the AMS housing (and ground eventually).
• If the device features 16 channels (AMS84. AMS42 + AMS-EXT8), the ground of the first eight
channels is not electrically connected to the ground of the next eight channels.
3 AMS Backplane
The AMS-backplane provides 8 slots for 5B modules and the AMS-K plug-in cassettes (see chapter
4.2) carrying the 5B modules. Two backplanes are integrated in the AMS84.
If the optional add-on AMS-EXT8 (see chapter 4.4) is used, eight slots each are available on the front
and on the back of the AMS42.

3.1 Ground-to-Ground Resistance
Ideally, the output ground is not electrically connected with the power supply ground. If, however, a
connection to ground is necessary (e.g. to use the output switch in the 5B module), the 2-pin jumper