SYSTEM
470 Back
to System 470
ADC Resolution: 16-bits, including
sign.
Gain Accuracy: ± 0.05%.
Gain Stability:
± (0.01% + 0.003%/°C).
Linearity:
± (0.02% + ½LSB).
Static Crosstalk: 120dB between channels, dc
to 1KHz with 350 ohm source; 10 V
maximum non-overloaded input.
Zero Offset:
± 10 m V, channel-to-channel.
Zero Stability:
± (5 m V RTI + 1.25 mV RTO)± (0.5 m V/ oC RTI + 0.1mV/oC
RTO).
Noise:
8.5mV RTI, 1.5mV RTO at 10 KHz Throughput
3.7mV RTI, 1.5mV RTO at 1 KHz Throughput
Noise =
[(RTI x Gain)² + RTO²]1/2
32
Bit TTL Input - 470010 Back
to 470
This card reads 32 bits of input TTL data as
two groups of 16 bits each. A Hold output signal handshakes
with the device being read. Hold is a 10 mS pulse of selectable
polarity asserted when either 16-bit group is to be read. This
feature is especially useful when reading digitally-coded levels
from a counter, DVM, clock, etc., which, if read in it's transitional
state, would result in ambiguous data.
An Enable input allows the user to decide when to update the
card’s input register. All inputs and outputs interface with
either standard or low power TTL logic. Jumper wires select
positive true or negative true logic levels.
Specifications:
Inputs:
High-Level Input Voltage: 2.0 V min; 5.0 V max
Low-Level Input Voltage: 0.0 V min; 0.8 V max
High-Level
Input Current: 20 mA max
Low-Level
Input Current: -400 mA max
Enable:
1000 ohm pull-up resistor
Outputs:
High-Level Output Voltage: 5.25 V max
Low-Level Output Voltage: 0.4 V max
High-Level
Output Current: 250mA max
Low-Level
Output Current: 40mA max
16
- Bit Isolated AC/DC Input - 470011 Back
to 470
This 16-Point card accepts on/off input signals
ranging from 12 V to 48 V, ac or dc, providing isolation between
channels as well as from ground.
Specifications:
Input Current:
21 mA @ 48 V, 8.1 mA @ 24 V, 1.4 mA @ 12 V
Common Mode Voltage: 1000 V max
Response Time:
50 mS
Two-Channel
Frequency or Period Input-470012 Back
to 470
The Two-Channel Frequency or Period Input card
accommodates inputs from tachometers, flowmeters, or other frequency-related
devices. Frequency or period measurements or straight event
counting are selectable by switches on the card.
For
flexibility, each channel accepts two types of inputs. One set
of input terminals, for TTL logic levels, is optically coupled.
The other input is intended for use with signal levels that
vary with frequency. An event zero-crossing detector accepts
inputs from ± 200 mV to ± 100 V at frequencies to 100 KHz.
A
crystal-controlled clock provides accurate time bases for measurements
on both channels while each channel has its own 32K counter.
After each measurement, the counter is reset. Frequency measurement
involves counting the number of input pulses occurring between
clock pulses.
Specifications:
Accuracy:
Frequency Mode: ±0.01% of reading ±1 count
Period Mode: ±0.01%
of reading ± input rise time (0.6 to 4V transition)
Ranges (Max):
Frequency Mode: 327Khz
Period Mode:
32.7 Sec
Count Mode:
32767 counts
Sink Current:
16 mA max
Common Mode: ± 300 V max
Frequency:
dc to 350 KHz
Non-isolated Input:
Input Voltage: ± 200 mV min; ± 100 V max
Input Impedance: 50k ohms
Frequency: dc to 100 KHz
32
Bit TTL Input/Output - 470013 Back
to 470
The 32-Point TTL Input/Output card provides
a 32-bit TTL level bus for user definition. The bus is divided
into four bytes, each of which may be programmed separately
as either input or output.
Specifications:
Inputs:
High Level V in: 3.15Vmin, 5Vmax
Low Level V in: -1.5Vmin, - 0.9Vmax
Outputs:
High Level V out: 2.4V min
High Level I out: -2.6mA max
Low Level V out: 0.5V max
Low Level I out: 24mA max
ARINC-429
Controller 470014 Back
to 470
ARINC-429 Controller, 470014, is used to interface
the System 470 to the ARINC-429, Mark33 Digital Information
Transfer System (DITS) bus. It mounts in a standard System 470
function card slot and provides 4 receiver and 4 transmitter
channels for communication with compatible devices.
Features:
* Four receiver channels
* Four transmitter channels
* Received data sorted by Label
* Data packet for interdependent Labels
* Received data read by 470 scan list
* SDI support
* Both fast and slow bit rates supported
Two-Channel
Frequency or Period Input - 470015 Back
to 470
The Two-Channel Frequency or Period Input card
accommodates inputs from tachometers, flowmeters, or other frequency-related
devices. Operating modes include frequency measurement, period
measurement and pulse counting. Selection of mode, clock frequency,
number of periods included in the measurement and desired polarity
are all programmable.
For
flexibility, each channel accepts two types of inputs. One set
of input terminals, for TTL logic levels, is optically coupled.
The other input is intended for use with signal levels that
vary with frequency. An event zero-crossing detector accepts
inputs from ±100
mV to ±100 V at frequencies to 100 KHz.
Specifications:
Accuracy:
Internal Time Base: 0.01%
of nominal
Frequency Mode:
0.01% of reading ±1 count
Period Mode:
0.1% of reading to 100mS 0.01% of reading
to 1.0mS
Event Counting Mode: ±1 count
Input Characteristics:
Isolated TTL Input:
Input Voltage:
±5.25V, maximum
Sink Current:
16mA, maximum
Common-mode:
±300V, maximum
Frequency Range:
dc to 350KHz
Level Detector Input:
Input Voltage:
100mV, minimum to 100V, maximum
Frequency Range:
dc to 100KHz
32-Bit
TTL Output--470030 Back
to 470
The 32-Bit TTL Output card provides two 16-bit
outputs for driving TTL-compatible loads or other loads not
exceeding output capability (30 V maximum; 40 mA maximum). Dual-rank
registers permit the simultaneous updating of all outputs.
All
outputs are open-collector gates with pull-up resistors to the
internal 5 V supply for driving standard TTL or 5 V CMOS loads.
Placement of a jumper permits use of an external voltage source
up to 28 V. Outputs can then interface to high voltage CMOS
logic or be used to drive relay coils, lamps, or other loads
not exceeding 40 mA.
Output
polarity of each group of eight outputs is determined by jumper
placement. This allows the user to arrange logic polarity to
any desired power-up/reset condition required by the application.
Specifications:
Open Circuit Voltage: +30 V max
Sink Current:
-40 mA max
Eight-Point
Form 'C' Relay Output--470031 Back
to 470
The Eight-Point Form-C Relay Output card provides eight three-wire
form-C outputs (normally open, normally closed, and common)
to drive various control devices. Each relay has a "set"
and "reset" coil and is magnetically latched in its
current state at power down. Eight control bits are used to
address and control the relays individually. Dual-rank registers
permit simultaneous updating of all relay states.
Specifications
Initial Contact Resistance:
30 milliOhm, max
Maximum Contact Switching Power: 2000 VA, 150 W (resistive)
Maximum Switching Voltage:
250 VAC
Maximum Switching Current:
8 Amperes
Breakdown Voltage:
1000V between open contacts
1000 V between contacts and ground
Set/Reset Time:
8mS (approximately)
16-Channel
Differential Multiplexer Cards Back
to 470
System 470 offers four types of differential
multiplexer cards intended for analog signal inputs in full
scale ranges of ± 5mV to ± 10.24V.
Card
470050 is the basic differential multiplexer used for measuring
voltages over the entire range; the others offer alternate input
configurations. Card 470051 provides open source detection,
470052 is equipped with shunt resistors for measuring 4-20 mA
inputs and 470059 has direct input (w/o filter).
Except
for 470059, the cards are equipped with two-pole, passive R-C
filters having a terminal rolloff of 12 dB/octave. The -6 dB
corner frequency of 10 Hz provides greater than 25 dB attenuation
of input noise components at the 60 Hz power line frequency.
The
open source detection feature recognizes open thermocouples,
broken wires and high resistance or open input connections.
Card 470052 has a 250 Ohm shunt resistors on each channel for
sensing 4-20 mA input.
Specifications: (System 470 with 470050 Cards Installed)
Number of Channels: 16
guarded differential input channels per card
Input
sources may be grounded or floating.
Input Impedance: 10
MegOhms: Power on or off.
Input Filter: Passive
RC filter on each channel;2-pole,
low-pass
with 12 dB/octave terminal slope;
-6
dB at 10 Hz and -30 dB at 100 Hz.
Maximum Input Voltage: ± 30 V differential or
common mode
Common Mode Rejection: 120 dB (80 dB plus gain in dB to
120
dB max); dc to 60 Hz with 350
ohm
source imbalance.
Common Mode Voltage: ± 10 V operating.
ADC Resolution: 16-bits,
including sign.
Gain Accuracy: ±
0.05%.
Gain Stability: ±
(0.01% + 0.003%/°C).
Linearity:
± (0.02% + ½LSB).
Static Crosstalk: 120
dB between channels, dc to 1 KHz with
350 ohm source 10V maximum
non-overloaded input.
Zero Offset: ±
10 mV, channel-to-channel.
Zero Stability: ±
(5 uV RTI + 1.25 mV RTO)
±
(0.5 uV/ oC RTI + 0.1 mV/oC RTO).
Noise:
8.5 uV RTI, 1.5mV RTO at 10 KHz Throughput
3.7 uV RTI, 1.5mV RTO at 1 KHz Throughput
Noise = [(RTI x Gain)² + RTO²]1/2
4
Channel Conditioner/Multiplexer - 470054 Back
to 470
For bridge measurements using one, two, or four active arms,
this card provides a precision excitation supply, balance control,
and terminals for bridge completion, balance limit, and calibration
resistors on each channel. Bridge completion resistor kits are
available, see below.
The
card includes multiplexer switches and a standard two-pole RC
filter, providing the same performance specifications as the
470050 16-Channel Multiplexer. One step shunt resistor calibration
is programmable. Up to eight input leads plus shield can be
used, giving the user the option of local or remote sensing.
Specifications: - Excitation Supply
Voltage: Selectable;
5 V or 10 V.
Current: 100
mA max/channel; short circuit
protected.
3.2 Amperes per control
or
expansion assembly.
Line Regulation: Less
than 0.01% or 200mV, whichever is
greater,
for ±10% line voltage variation.
Load Regulation: Less
than 0.01% or 200 m V, whichever is
greater,
for a no load to full load change.
Stability:
± 0.01% at constant temperature; ± 0.005%/oC.
Noise: Less
than 200m V pk-pk in 10KHz bandwidth.
Bridge Completion: Terminals provided for four
completion resistors.
Test Points: Front
mounted jacks for Points: monitoring
excitation and output voltages.
Bridge Completion
Resistor Kits: 350
or 120 ohm kits include three bridge
completion
and one balance limit resistors.
Four
Channel RTD Conditioner/Multiplexer - 470055 Back
to 470
The Four Channel RTD Conditioning/Multiplexer provides direct
connection of 2, 3, and 4-wire, 100 ohm RTDs in a balanced bridge
configuration. The card can be configured by jumper placement
to accommodate current-excited 4-wire RTDs of values to 1k ohm.
The
card includes multiplexer switches, 10 Hz filter, and excitation
source adjustment for each channel. Excitation current is 0.5
mA in the bridge configuration, or 1 mA in the constant current
configuration, resulting in very low self-heating errors in
the RTDs.
Specifications: - Excitation Supply
Current: 1.0
mA adjustable +/- 1%
Compliance Voltage: 0 to 3.5 Volts
Line Regulation:
Less than 0.01% or 0.1mA,
for a ±10% line voltage variation.
Response:
Output settles to within 1% of setting in
less than 50 microseconds with a no-load
to full-load change.
Stability:
± 0.01% at constant temperature; ± 0.005%/oC.
Output Impedance: 1 megOhm minimum
Ripple:
Less than 0.2mA peak-to-peak over
the bandwidth dc to 1KHz.
Test Points:
Front mounted jacks for monitoring
excitation and output voltages.
16
Channel Transformer Coupled Multiplexer - 470056
Back
to 470
The Transformer-Coupled Differential Multiplexer provides 16
channels of analog input for System 470. Each channel is galvanically
isolated from other channels and from ground. Common mode voltages
of up to 1000 V are rejected.
Each
channel features fully-guarded differential input allowing operation
from either grounded or floating input sources. Two-pole, low
pass filters approach 12 dB/octave terminal rolloff on each
channel.
Specifications: (System 470 with 470056 Card Installed)
Number of Channels: 16
guarded differential input channels
Input
sources may be floating or grounded.
Input Filter: Passive
RC filter on each channel; two-pole,
low-pass
with terminal slope approaching
12 dB/octave; -6 dB at 10 Hz and -30 dB at
100 Hz.
Input Impedance: 5
megohms, minimum; power on or off.
Isolation: Less
than 100 pF from any input terminal to
ground. CMOS input switches are off with
system power removed.
Maximum Input Voltage: ± 30 V differential,
without damage.
Common Mode Voltage: ±1000
V dc or peak ac.
Common Mode Rejection: 100 dB + gain in dB to 120
dB max; dc to
60 Hz with up to 350 ohms source imbalance.
Full Scale Accuracy: ±0.05%
of full scale at constant temperature,
±0.003%/oC.
Linearity: Less
than 0.05% of full scale deviation from
best
fit straight line through zero and full scale.
Zero Stability: ±(5
uV RTI + 1.25 mV RTO) at constant
temperature;
±(0.5 uV/oC RTI ± 0.1 mV/oC RTO).
Zero Offset: ±
10 uV channel-to-channel.
Noise (3 Sigma): 10
uV peak RTI + 1.5 mV RTO.
Resolution: 16-bit
resolution; 0.003% FS.
Static Crosstalk: 120
dB between any two channels; dc to
1 KHz.
Dynamic Crosstalk: 110
dB to next channel in scan including
overload
(up to 30 V input) and full scale
range changing.
Sample Rate: 20
samples/second/channel max to meet
all specifications,
with up to 350 ohm
source resistance.
Note: System 470 sample rate must be
set to 10 KHz
Two
Channel 16-Bit DAC 470070 Back
to 470
The Two Channel DAC Output card provides two channels of analog
output from System 470. Each channel consists of a 16-bit digital-to-analog
converter (DAC) scaled to deliver ± 10.24 V output. Each output
can deliver 20 mA of load current with remote sense leads provided
to cancel line drops. Dual-rank registers permit simultaneous
updating of both channels.
Specifications:
Output Voltage: ± 10.24 V full scale.
Output Current: ± 20 mA.
Accuracy:
± 0.02% of full scale.
Stability:
± 0.005% of FS at constant temperature;
0.001%/oC over 0 to 50oC.
Resolution:
0.00305% FS/count (1 part in 32,768).
Noise:
Less than 500 m V in 10 KHz bandwidth
Sixteen
Channel 12-Bit DAC 470071 Back
to 470
The 16 Channel DAC Output card provides 16 channels of analog
output from System 470. Each channel consists of a 12-bit digital-to-analog
converter (DAC) scaled to deliver ±10.24 V output. Each output
can deliver 20 mA of load current with remote sense leads provided
to cancel line drops.
Specifications:
Output Voltage: ± 10.24 V full scale.
Output Current: ± 20 mA.
Accuracy: ± 0.02% of full scale.
Stability:
± 0.005% of FS at constant temperature;
0.001%/oC over 0 to 50oC.
Resolution:
0.05% FS/count (1 part in 2,048).
Noise:
Less than 500 uV in 10 KHz bandwidth.
16-Channel
Isothermal - 470081 Back
to 470
The Isothermal Connector provides the means of terminating thermocouple
input cables at the rear panel of the System 470. It can be
used with any of the following analog input cards.
470050 16 Channel Multiplexer
470051 16 Channel Multiplexer with Open Source Detection
470056 16 Channel Transformer- Coupled Multiplexer
472060 16 Channel Amplifier/Mux
The
Isothermal Connector plugs directly into the input (edge) connector
of the analog input card. Thermocouple cables are brought into
15 sets of screw terminals on the connector, corresponding to
multiplexer input channels 1 through 15. A temperature transducer
in the connector supplies a reference voltage to channel 0 that
is proportional to the termination temperature.
The
termination temperature and the type of thermocouple on each
channel is the information the CPU requires to convert the thermocouple
voltage to temperature. Since the conversion is under control
of the CPU, thermocouple types can be mixed.
Specifications:
Reference Temperature:
1 mV/oC (Channel 00) referenced
at 0oC
Reference Temperature Accuracy: ± 0.25oC over the range of 10o
to 45oC.
Accuracy: ± 0.025% + 10 uV
Thermocouple Inputs:
Channels 01 through 15.
Temperature Gradient:
0.1oC across terminations
Calibration
Card - 470085 Back
to 470
The Calibration Card is a programmable dc voltage source used
for calibration of the System 470. It can be installed in any
function card slot. The card's output voltage is read through
its analog multiplexer and is also output on the user I/O connector
for use by external devices or for calibration of the card.
Output
voltage is programmable in three ranges from ±10.24 mV to ±10.24
V full scale. The voltage is derived from an on-board DAC driven
by a 15-bit (plus sign) digital word from the host computer.
The Calibration Card's address and voltage level is included
in the output list formatted by the host and transferred to
System 470. The card's address is included in the input scan
list to read back the calibration voltage to the system.
Specifications:
Range Resolution: At ± 10.24V - 312.5 mV
At ± 1.025V - 31.25mV
At ± 102.4V - 3.125mV
Accuracy:
± 0.025% FS + 10 m V.
Output Impedance: 50 ohms.
Load Resistance: 500k ohm minimum for specified
accuracy.
The
Neff Advantage
