GEN7iB
266
INPUT CARDS
INPUT CARDS
12
12.7 Opticalberisolatedinputcard
12.7.1 GN1202B,Opticalberisolated100MS/sinputcard
● 12 transmitters per receiver card
● Digitalberopticconnection,noise/erroranddriftfree
● Cable length up to 1000 m
● Automatic cable length phase compensation
● Battery powered transmitter
● Continuous powered transmitter with 1.8 kV RMS isolation
● ± 20 mV to ± 100 V input ranges
● Analog/digitalanti-aliaslters
● Calibration values stored in transmitter
● 25 MS/s or 100 MS/s transmitter
● 15 or 14 bit resolution
● Real-time formula database calculators
● Triggering on real-time results
● Digital Event/Timer/Counter support
Theopticalberisolatedsystemconsistsofupto12transmitterunits
connected to the GN1202B receiver card built into a GEN series main-
frameusingaberopticcable.
By converting the analog signal into a digital signal and transmitting the
signaltothereceivercardviaberopticcable,thetransmissiondoesnot
add any drift or error to the measured signal. The automatic cable length
compensationphase-matchesallberopticisolatedchannelstoany
standard analog input channel.
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The GN112 and GN113 transmitters offer continuous powered isolation at 1.8 kV RMS,
while the GN110 and GN111 transmitters offer higher isolation options using battery
power with a continuous operation time of 30 hours.
Superior, best in class anti-alias protection is achieved by a unique, multi stage
approach.Therststagecombinationofa6-poleanaloganti-aliasltercombinedwith
the Analog-to-Digital converter creates an alias free digital data stream at constant
rate of 100 MS/s.
Thesecondstagefeedsthe100MS/sdatastreamintoauserselectabledigitallter,
toreducethesignaltothedesiredmaximumbandwidth.Thedigitalltersupports8
ordersBesselorButterworthltercharacteristics.
Thethirdstagedecimatesthe100MS/slteredsignaltothedesiredsamplerate.
Thedigitallterbeforedecimationguaranteesasuperiorphasematch,ultra-lownoise
and alias free result.