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HUGO SACHS ELEKTRONIK - HARVARD
A P P A R A T U S
GmbH D-79232 March-Hugstetten Germany
HSE PLUGSYS
®
TAM-A Type 705/1 and TAM-D Type 705/2
With a known transducer sensitivity (e.g. Isotec transducer 5.05 µV / Volt supply / mm Hg)
the gain is calculated as follows:
Range ±200 mmHg (can be selected individually)
Details:
Bridge supply voltage 5 Volt (fixed)
Output voltage range of TAM ±10 V (fixed)
Transducer sensitivity 5.05 µV / Volt supply / mm Hg (see transducer data sheet)
As the GAIN fine trimmer does only allow gain reduction, the gain jumper should allways be set to the next higher
possible value. In the example above the gain should be set to 200. This gives an overall amplification of 200
(preamplifier) times 10 (output amplifier), equal to 2000x. The exact adjustment of the gain to 1980 is made
through the transducer calibration on the front trimmer "GAIN 20-100%".
10
((5.05 x 10
-6
) x 5 x 200)
= 1980.2
output voltage in volt
gain required
range on mm Hg
bridge suply voltage
transducer sensitivity
e.g. 5.05 µV/V/mm Hg
range in mm Hg
The table below provides information on typical amplifier adjustments for standard transduc-
ers and applications.
Set GAIN on board with Jumper J2
