NetDAS - L-3 Telemetry-East

NETDAS™ NVC-2
2916
16
6-Channe
el, High-D
Density Voltage Co
onditione
er Module
e
FEATUR
RES
Use of U.S. DoD imagery does not imply or constitute DoD endorsement.
• 16 cha
annels of differrential
analog
g signal condittioning for
device
es such as volttage
source
es or potentiom
meters
• Each channel
c
suppo
orts inputs
up to 10
1 Vp-p
• Includes constant vo
oltage
excita
ation source th at
provid
des 2 to 10 Vp-pp at
30 mA
A per channel
• Module su
upports Z-CAL
L,
N-CAL, tra
ansducer offse
et,
amplifier o
offset and
manual offfset
• Supports s
simultaneous
sample and hold functio
on on
nnel basis
a per chan
• Each channel
c
has in
ndependent and
a user-selec
ctable gain
and offfset settings
Te
elemetry-Eas
st
• Programm
mable settings
allow for to
otal gain from
1 up to 102
24
• Fully progrrammable by L
L-3’s
Vista TEC™
AIRB
BORNE TEL
LEMETRY P
PRODUCTS
NETDAS™ NVC-2
2916
16
6-Channe
el, High-D
Density Voltage Co
onditione
er Module
e
OV
VERVIEW
Thiis signal condiitioning module monitors up
p to 16 differen
ntial analog inp
puts from devic
ces, such as v
voltage
sou
urces and pote
entiometers, generating
g
converted digital output in 16 u nique words. The module d
design
utillizes specialize
ed Digital Sign
nal Processing (DSP) filtering
g concepts tha
at provide perfformance similar to
trad
ditional analog
g-based implementations, while
w
requiring significantly fe
ewer electroni c components
s. The
end
d result is grea
ater channel density, at a low
wer cost per channel, withou
ut sacrificing f unctionality.
Eac
ch channel has
s an input mulltiplexer used to
t select betw
ween one of thrree sources: e
external sensorr, ground
for Zero Calibratiion (Z-CAL), orr a programma
able Digital-to--Analog Conve
erter (DAC) forr Numerical Ca
alibration
(N--CAL). The mu
ultiplexer’s outtput is fed to a programmable gain stage ssupporting a to
otal gain betw
ween 1
and
d 1024. The amplified signa
al is then passe
ed through an anti-aliasing ffilter, followed by an Analog--toDig
gital Converterr (ADC) operating at a rate off 390.625 ksps
s and feeding tthe DSP filter. To minimize
dis
stortion (≤ 72 dB)
d induced by
y the frame sam
mpling, the da
ata is up-samp
pled from 390.6
625 kHz to 50 MHz.
The
e NVC-2916 fe
eatures a progrrammable con
nstant voltage excitation sou
urce that provides 2 to 10 Vpp-p at
30 mA per chann
nel. Each chan
nnel provides a number of ca
alibration and balance featu
ures to facilitate
pro
ogramming and
d checkout: Z--CAL, N-CAL, transducer offfset, amplifier offset and ma
anual offset.
The
e NVC-2916 allows the user to enable an operating
o
mod
de called simulltaneous samp
ple and hold, w
which
pro
ovides phase correlation
c
bettween all simila
arly configured
d analog chan nels within the
e entire Data
Acq
quisition Unit (DAU),
(
or withiin a complete synchronized NetDAS™ systtem.
All features of the
e NVC-2916 arre supported by
b L-3 TE’s Vis
sta TEC™ softw
ware, which inc
cludes an ope
erational
che
eckout feature
e that provides
s automated te
esting of all channels to com
mpare data received and aga
ainst user
spe
ecified targets
s.
Te
elemetry-Eas
st
AIRB
BORNE TEL
LEMETRY P RODUCTS
NETDAS™ NVC-2
2916
16
6-Channe
el, High-D
Density Voltage Co
onditione
er Module
e
SP
PECIFICATIIONS
INPUT
ull Scale (FS) Range
Fu
10 Vp-p / gain
Inp
put Impedance
10 MΩ nominal
Ov
ver-Voltage Prottection
± 40 V with
w latch-up prrotection
AIN
GA
Se
electable Gain
Program
mmable gain fro
om 1 to 1024, ga
ain of 1 is 10 Vp--p
Ac
ccuracy
± 0.5 %
Stability
± 0.75 % of selected va
alue, including e
effects of excitattion drift
Lin
nearity
± 0.1 % Best Straight Line
L
(BSL)
FFSET
OF
Ch
hannel Offset Stability
± 0.5 % FS over tempe
erature
Re
eference to Outp
put (RTO)
Offfset Capability
± 50 % of FS range
(offset performed
p
in fie
eld-programmab
ble gate array (FP
PGA) before filte
ering)
Ou
utput / Channel Offset Stability
± 0.5 % FS over tempe
erature
DIGITAL FILTER
Prrogrammable 3 dB
d
Cu
utoff Frequency (Fc)
FC = 10
0 Hz to 8.014 kH
Hz
Spacing
g of selectable cutoffs:
c
12 % FC
Fu
ull Passband (FP
PB) Defined
FPB = 0.6144
0
x FC (i.e., FPB is program
mmable as 6.144
4 Hz to 5 kHz)
Intter-Channel Corrrelation
± 2 deg
grees, DC to Pas
ssband (between
n channels conffigured for the same FC)
Stopband
> 2.5 x FC @ 40 dB minimum
Am
mplitude Respon
nse
Flat witthin ± 0.5 % from
m DC to FPB forr FC < 5 kHz
+0.5 % / -1 % for FC > 5 kHz
-3 ± ½ dB
d at FC
Fillter Type
6-pole, low-pass Butte
erworth Infinite Im
mpulse Responsse (IIR) filter
Ou
utput Rate
50 Msp
ps
AD
DC Sample Rate
e
50 MHz
z / 128 = 390.625
5 ksps
EX
XCITATION
Nu
umber of Dual Excitation Supplies
16
Ra
ange (limit in Vis
sta TEC)
Dual tra
acking, positive and negative su
upplies
Individu
ually programma
able from 1 V to
o5V
~229 μV
V per step in 16--bit system
Ac
ccuracy
± 0.5 %
Lo
oad Regulation
± 0.5 % from 1 kΩ load
d to full load of 3
30 mA, 2 to 10 Vp-p
Cu
urrent Limit
Betwee
en 40 to 75 mA
OU
UTPUT
16
6-bit Conversion
n
The cha
annel output is converted
c
to a 1
16-bit word,
either straight
s
binary or 2s complemen
nt
Note: Full-scale
F
signal is converted intto 15 bits, with rremaining bit use
ed to
accomm
modate offset
Will sup
pport either com
mmon word size or extended rea
ad mode
Te
elemetry-Eas
st
AIRB
BORNE TEL
LEMETRY P
PRODUCTS
NETDAS™ NVC-2
2916
16
6-Channe
el, High-D
Density Voltage Co
onditione
er Module
e
NettDAS NVC-2916
6 BLOCK DIAGR
RAM
L-3 Telemetry
y-East
1515 Grundy’s La
ane
Bristol, PA 19007
7
Tel: 267.545.7000
0
Fax: 267.545.010
00
Email: sales.te@L
L-3com.com
www.L-3com.com
m/te
This
s technical data an
nd software is con
nsidered as Techno
ology Software Pu
ublicly Available (T
TSPA) No License R
Required (NLR) as
s defined in Exportt Administration
Reg
gulations (EAR) Pa
art 734.7-11. Data, including specifications, contained within this docum
ment are summary in nature and subjject to change at a
any time without
notiice at L-3 Communications’ discretio
on. Call for latest revision.
r
All brand names and produ
uct names referenc
ced are trademark
ks, registered trade
emarks, or trade
nam
mes of their respec
ctive holders. Rev
v 4/14
Te
elemetry-Eas
st
AIRB
BORNE TEL
LEMETRY P
PRODUCTS

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