IM4416C, Page 8
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3.2
Output Con
nection
Measuring Instrumentation, i.e. data acquisition, data logger etc., should
be connected to the output socket using coaxial cables. Load impedance
should be no lower than 100kΩ to meet all specifications. Ideally, the
4416C should be placed near the measuring instrumentation to minimize
the effect of cable capacitance loading.
3.3
Gain Setting
Depressing the “Gain” switch cycles through the gain ranges of x1, x10 and
x100. The gain range selected is shown by the indicator above the range
turning Green. The gain together with the transducer sensitivity determines
the acceleration range available from the system and the output sensitivity,
i.e. for an accelerometer with a sensitivity of 10mV/g pk, and the maximum
output of the 4416C being 10V pk:
Gain = 1 Range = 1000g Output sensitivity = 10mV/g
Gain = 10 Range = 100g Output sensitivity = 100mV/g
Gain = 100 Range = 10g Output sensitivity = 1000mV/g
3.4
Filter Selection
A second order low pass filter is selected by depressing the filter switch.
This toggles the filter in and out. With the indicator Green, the filter is
selected IN. The Standard filter provides attenuation of -5% at
approximately 10kHz, and -3dB at 30 kHz for gains of 1 and 10, or 18kHz
for gain of 100. The filter maybe used to reduce the effects of HF noise
and aliasing in data acquisition systems.
3.5
Battery Charging
Ensure that both the Charger and Conditioner are turned OFF before
connecting. Plug the Charger connector into the socket on the rear panel
of the Conditioner. Turn on the charger. Charging is accomplished in two
stages:
Stage 1 – Fast Charge Mode
“Fast Charge Mode”, covers both constant current and constant voltage
modes and charges the battery to approximately 85% of its capacity in
approximately 3 hours. Once 85% capacity has been achieved, the
charging will automatically switch into “Stage 2”.
Stage 2 – Trickle Charge Mode
“Trickle Charge Mode” will deliver sufficient charge to top up the battery to
100% of its capacity in approximately 45 minutes.