Products

16CLI8CLO4

Overview

16-Bit Analog Input/Output Board

With 8 Current Loop inputs, 4 Current Loop Outputs, and 16-Bit Digital I/O Port

The 66-16CLI8CLO4 from General Standards provides both voltage and current analog input/output capability in a single industry-standard module.

Analog inputs can be configured either as eight differential voltage inputs, 16 single-ended voltage inputs, or as current-loop terminations. Four analog output channels provide both voltage and current loop outputs, and are accessed through a 32 K-Sample FIFO buffer that operates independently of the analog input data buffer.

Available in PMC, PCI, cPCI and PC104-Plus and PCI Express form factors

Typical Applications
Voltage or Current I/O
Data Acquisition (DAS)
Ground Loop Elimination
Servo Control
Automatic Test (ATE)

Technical

Eight 16-Bit 0-20mA or 4-20mA scanned analog input channels, Software-configurable also as unipolar voltage inputs; 16 single-ended or eight differential, scaled as 0 to +10V, 0 to-+5V or 0 to +2.5V.
Four 16-Bit current-loop output channels, configurable as 0-20mA or 4-20mA ranges, driven by four voltage-output DACs scaled as 0 to +10V, 0 to +5V or 0 to +2.5V. Both the current-loop outputs and the outputs of the voltage-DACs are available at the system I/O connector.
Current-loop outputs have -15V to +11V compliance using internal supplies, or Zero to +31V compliance using an external +34V loop supply
Independent 32K-sample analog input and output FIFO buffers
300K samples per second aggregate analog input sample rate ( 37 KSPS per channel for 8 active channels)
300K samples per second per channel analog output clocking rate (1200 KSPS aggregate rate)
Multiple-channel and single-channel input scanning modes
Buffer amplifiers on all analog input lines
Supports waveform and arbitrary function generation, with continuous and one-shot modes
16-Bit bi-directional TTL digital port
Internal rate generator controls input sampling, output sampling, or both simultaneously
Supports multiboard synchronisation of analog inputs and outputs
Internal autocalibration of analog input and output channels
Continuous and triggered-burst (one-shot) input and output Modes
DMA engine minimises host I/O overhead
68-Pin SCSI system I/O connector with metal shell
66MHz PCI support where applicable, with universal 5V/3.3V signaling

Specifications

Configuration	16 input lines, configurable as 16 single-ended or 8 differential voltage channels, or as 8 current-loop termination channels. The inputs can be software-configured as (a) all voltage, (b) all current-loop, or as (c) four voltage and four current-loop.
Input Ranges	Software configurable as zero to +10, +5 or +2.5 Volts in voltage mode, or as 0-20mA or 4-20mA in current-loop mode.
Input Impedance	Voltage Mode	LO inputs: 1.0 Megohms line-to-ground, ±15%, HI inputs: 10 Megohms line-to-ground, ±30%, in parallel with 100pfd. Independent of scan rate.
	Current Mode	250 Ohms ±0.15%; 500 Ohms ±0.15% with 500-Ohm option (Effective sensed resistance at internal Kelvin connections. Resistance measured at input pins may be 2-3 Ohms higher).
Bias Current	80 nanoamps maximum
Signal to Noise (SNR)	80 dB typical
Common Mode Rejection	60 dB typical, DC-60 Hz, differential input mode.
Common Mode Range	±12 Volts in differential or current-loop configuration with shorted inputs
Maximum Input Voltage	±12 Volts on either HI or LO input line for specified performance; for both voltage and current-loop modes.
Overvoltage Protection	Any Input Line: ±30 Volts with power applied; ±15 Volts with power removed. Line-to-Line: Voltage Mode: Same as indicated for "Any Input Line" Current Mode: ±10V for 250-Ohm inputs; ±14V for 500-Ohm inputs.

Output Characteristics:
Configuration	Four single-ended voltage-output DACs driving four current-loop output channels. Both the outputs of the voltage DACs and the current-loop outputs are available simultaneously at the system I/O connector.
Ranges	Voltage Outputs	Same as selected for the input channels
	Current Outputs	0-20mA or 4-20mA (Requires 0 to +5V voltage range)
Output Resistance	Voltage Outputs	1.0 Ohm maximum
	Current Outputs	30 Megohms minimum
Output Protection	Voltage outputs withstand sustained short-circuiting to ground.
Output Compliance (Current outputs)	-15V to +11V with internal supply; Vext - 34V to Vext -3.0V for external supply Vext
External Loop Supply (Vext)	+16V to +34V. (Output loads transfer to the internal supply with Vext < +16V)
Load Current (Voltage Outputs)	Zero to ±3ma per individual channel
Load Capacitance	Stable with zero to 2000 pF shunt capacitance
Noise	1.0mV-RMS, 10Hz-1MHz typical (Voltage outputs)
Glitch Impulse	5 nV-Sec typical, ±2.5V range. (Voltage outputs)

Technical documents

GSC 16CLI8CLO4 Datasheet

Ordering information

Please contact Sarsen Technology for the availability of other form factors, such as XMC, CCPMC, etc.

(The description in this spec applies primarily to the PMC form-factor.)

Basic Model Number	Form Factor
PMC66-16CLI8CLO4	PMC, Single-width
PCI66-16CLI8CLO4	PCI, short length
cPCI66-16CLI8CLO4	cPCI, 3U
PC104P66-16CLI8CLO4	PC104 Plus
PCIe-16CLI8CLO4	PCI Express
PCIe104-16CLI8CLO4	PCIe, one-lane on PC/104 form factor

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Processor