BS and BSA Bias Supply Series and User Manual, Rev 2.60
www.stahl-electronics.com phone: +49 6242-504882, fax: +49 6242 504884
5
ventilation. Additionally a second sensor can be read out in the
display’s protocol mode (see section 4.1).
Beware of external magnetic
fields
As it is common for most electronic devices, external magnetic
fields can impair, damage or even destroy a device. A maximum
external field strength of 5mT is admissible and must never be
exceeded. This holds for static as well as alternating fields. If in
doubt, check possible external field e.g. with a hall probe before
switching the device on. In case an external field strength of 5mT is
exceeded, once or permanently, the device may overheat or cause
excessive power consumption.
Operate carefully with respect
to risk of electrical shock
In case the floating ground input is used, the internally produced
voltage adds up to the externally applied. Voltages above +/-
100V
DC
therefore may appear at the outputs which are harmful in
case of direct touch with the human body, or which may endanger
other sensitive devices.
Routinely cleaning from dust After long operation, or operation in a dusty environment it is
strongly recommended to have the internal parts of the device
cleaned by the manufacturer, or an appropriately qualified
workshop in order to ensure proper operation and reduce the hazard
of overheating.
Only operate with working air
fan
The ventilation fan located at the rear side of the device always
needs to work to ensure proper cooling. Please refer to section 6.
No outdoor operation Outdoor operation of the device is not admissible.
3. Installation
3.1. Mechanical and Electrical Installation
Positioning: Sufficient air cooling should be provided to the device. Rack mounting into a standard
19” rack is as well possible as resting the device on a table. Case vents must be cleared (fan inlet and
air outlet at rear side), in order to prevent overheating or thermal drifts. If in doubt about the
sufficiency of air ventilation, provide a software readout of the internal temperature sensor for regular
inspection, e.g. every 2 minutes. Alternatively the temperature of a second sensor can be read by
switching the display to the protocol mode (see section 4.1, below).
Fig. 3.1 Keep air vents always clear to ensure ventilation
Connecting to mains power:
Connect the device to the mains power supply by using an appropriate power cord, being properly
wired and providing a grounded outlet. The power cord must be suited with respect to possible load
currents and should be rated to at least 1A current.
Cabling of voltage outputs:
Always provide appropriate cabling to the device, shielded cables are preferable to ensure avoidance
of external noise pickup. In case the reference ground is floated always be aware about the potential
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