O/P Normalizes 1V/g or 0.1V/g, for I/P's 10, 31.6 or 100mV/g • 28V 4mA Transducer Supply, Transducer O/C & S/C Fault Detection • O/L Indicator, DC O/P
The V3/04 is a three channel QVC interface amplifier providing a space efficient solution to Tri-Axial Voltage transducers interfacing . Each channel provides switched normalized outputs of 1 or 10g/V for transducer sensitivities of 10, 31.6, or 100mV/g. Gain is thus adjustable over the range x1 to x100 in 10dB increments. This is a much reduced dynamic range compared to that of the VV/04, but suffices for a very broad range of applications, particularly where close tolerance transducers equating to the three normalizing options are used. Each V3/04 amplifier channel includes an integral 28V 4mA transducer power source, transducer O/C and S/C fault detection LEDs, an output overload indicator LED, and AC/DC peak converter output.
The V3/04 allows a maximum of 36 channels of QVC interface to be packed into a single housing.
Transducer Power Supply
Input is assumed to be a two wire active device (QVC) with the signal offset by a DC bias which is the de facto QVC operating voltage Vb. Vb is temperature dependent. Signal excursion should not be constrained by virtue of power supply (voltage, current drive capability) limitations.
DC O/P
The O/P overload detector comprises a linear absolute value peak detector, comparator and LED. The peak detector provides the ancillary DC O/P. Note that the peak detector’s 5sec.time constant is conditional upon minimal loading, a 10MΩ load will halve the t/c.
