WPI ISO-DAM, Инструкция по эксплуатации

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ISO-DAM
supply. With the Power switch in the OFF/CHArGE position, the red lamp above the
switch will light while the batteries are charging. When depleted, batteries can usually
be recharged in 12 to 14 hours. They should not be damaged by charging for longer
periods.
Power Adapter
The wall power adapter (power supply) converts mains alternating current to 12 volts DC
to power ISO-DAM. Note that the power receptacle on top of the unit is dual. Thus, using
a jumper cable (provided), up to four ISO-DAM amplifiers can be operated from one
power adapter. Jumper cables are supplied for each amplifier so that ISO-DAMs can be
multiply connected to 12 volt DC power. The user may also substitute a 12 volt storage
battery as a power source rather than line power if desired.
Specifications
Voltage Gain
×
10,
×
100,
×
1000,
×
10,000
Input r to Gnd, each input > 10 12 Ohms
Input r, between Inputs > 10
12
Ohms
Amp Noise, input shorted < 0.4 µV rms (1 Hz-100 Hz),
< 2 µV rms (1 Hz-10 kHz)
Bandwidth DC to 10 kHz
Filter, low pass 0.1, 0.2, 0.5, 1, 3, 10 kHz
Filter, high pass 0.1, 1, 10, 300 Hz
Input Offset V. Adjust. ± 100 mV
Common Mode rejection > 100 dB @ 50/60 Hz
Output Voltage Swing ± 5 Volts
Output resistance 220
Ω
Power Adapter 115 V 60 Hz or
230 V 50 Hz to 12 V DC (user specifies)
Dimensions 8
×
4
×
1.75 in. (20.3
×
10.2
×
4.4 cm)
Weight 1.5 lb (0.7 kg) approx.
Shipping Weight 3.5 lb (1.6 kg)
4 WOrLD PrECISION INSTruMENTS
Introduction
The ISO-DAM preamplifier is photoelectrically isolated from earth ground. No significant
current can flow from input terminals of the instrument to ground. The instrument is
intrinsically safe and cannot cause any electrical stimulus or shock to the subject. ISO-
DAM’s small case allows the instrument to be placed close to the site of measurement.
ISO-DAMs can be stacked in groups of four in a convenient 19-in. rack mount.
The input stage of ISO-DAM is battery powered by two long-lived miniature Ni-Cd
batteries and has no electrical connection to the AC power circuit ground. This isolation
is achieved by photoelectric coupling. Isolated preamplification has several important
advantages over non-isolated amplifiers.
WOrLD PrECISION INSTruMENTS 1
Faraday ground
–
BLACK
+
RED
BRAID
(Ground Reference)