Specifications

15-396 | OWNER’S GUIDE
Module Pin-outs (all 8 inputs are the same)
MDAQ-SUB-ACC-BNC version
Typical Sensor Hook-ups
Above left: IEPE sensor mode Above right: Voltage input mode
For constant current powered sensors (IEPE) the current source is switched on and the minus input of the
BNC is connected to GND. The input coupling is switched to AC. In this mode the TEDS interface circuit is
activated so that it can read the sensor information from IEEE 1451.4 compliant sensors (the TEDS interface
is disabled in the voltage mode).
In all voltage measurement modes the current source is disconnected from the input signal.
The position of the GND switch denes if the amplier is used for differential or singled-ended input congu-
ration. The allowed input voltage range (common mode voltage) is limited to 12 V.
- NOTE: If oating input sources (like batteries) are connected to the MDAQ-SUB-ACC the amplier has to be used
in single ended conguration (GND-switch ON)! Otherwise the input may be out of the maximum input voltage
range!
- In dierential mode as well as in single ended mode AC or DC coupling is possible. The standard high pass lter
frequency is 3 Hz in AC-mode. Please contact DEWETRON for other frequencies.
⇒ The constant current supply (4 or 8 mA) that you set on one channel, will apply to all 8 channels of this MDAQ-
SUB module. However, other MDAQ-SUB modules may be set to dierent constant current levels.
HOT: IN+
SHIELD: IN-