The Daytronic System 10 is a versatile signal processing instrumentation system designed for measurement and analysis, data acquisition, and control. It comes in two basic types of mainframes: "A-sized" and "B-sized," with this guidebook focusing on both. The system is designed for ease of setup and operation, offering both local (via extended keyboard) and remote (via external computer or terminal) command entry.
Function Description:
The System 10 is a comprehensive instrument system capable of performing various interrelated functions for data collection, display, processing, communications, reporting, and process control. It supports a wide array of signal conditioner cards for different types of transducers, allowing for diverse measurement applications. Key functions include:
- Data Acquisition: Acquiring physical measurement data from various transducers.
- Signal Conditioning: Processing raw transducer signals for accuracy and stability.
- Data Display: Presenting live and historical data on LCD/VFD displays or external CRT monitors, with customizable page formats and visual effects.
- Calculations: Performing cross-channel calculations in real-time, including algebraic operations, square root, absolute value, maximum/minimum, and process variables like efficiency, horsepower, and power factor.
- Logic and Control: Managing internal logic bits and logic I/O ports, enabling automatic command execution based on predefined logic events and limit conditions.
- Communication: Interfacing with external devices such as computers, terminals, printers, and modems via RS-232-C, IEEE-488, or RS-422 standards.
- History Recording: Storing and playing back digital recordings of numerical and logic data, with features for time search and variable time scale replay.
Important Technical Specifications:
The System 10 supports a wide range of conditioner cards, each with specific technical specifications tailored to different transducer types. Here are some general specifications and examples from various cards:
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Thermocouple Conditioner Cards (e.g., 10A9-8C, 10A10-4, AA14-4F010):
- Measurement Range: Varies by TC type (e.g., -130°C to +1000°C for Type E, -20°C to +1750°C for Type R).
- Resolution: Typically 0.1°C or 0.2°F.
- System Accuracy: Typically ±0.6°C to ±2.2°F (including ± one count of least significant digit displayed).
- Reference-Junction Compensation: Built-in precision thermistor at the connector block or remote junction box.
- Thermocouple Break Detection: Off-scale positive or negative indication, selectable per channel.
- Common-Mode Range: Up to ±1500 V-DC (10A10-4).
- Filter: 2-pole or 3-pole modified Butterworth (e.g., 3 dB down at 1 Hz).
- Step-Response Settling Time: Typically 0.3 to 8 seconds to 0.02% of final value.
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RTD Conditioner Cards (e.g., 10A16-4C, 10A17-2, 10A18-4C):
- RTD Types: Platinum; DIN (European) or American standard (50, 100, or 200 ohms).
- Resolution: Typically 0.1°C or 0.2°F (0.01°C/0.02°F with special modification).
- Excitation: Nominal 5 V-DC, 1 mA maximum.
- Input Impedance: Differential: 10 megohms.
- Leadwire Resistance Rejection: 0.004% per ohm (4-wire).
- Filter: 3-pole modified Butterworth (e.g., 3 dB down at 2 Hz).
- Step-Response Settling Time: Typically 0.6 to 1.5 seconds to 0.02% of final value.
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LVDT Conditioner Cards (e.g., 10A30-2C, 10A31-4, AA30-4):
- Transducer Types: 5- or 7-wire LVDTs, 3- or 5-wire variable reluctance transducers.
- Excitation: Nominal 3.0 V-AC (rms) at 3280 Hz, 40 mA maximum.
- Sensitivity Range: ±0.010 in. (±0.25 mm) to ±6.0 in. (±15.24 cm).
- Filter: 3-pole modified Butterworth (e.g., 3 dB down at 6 Hz).
- Step-Response Settling Time: Typically 250 to 500 msec to 1% of final value.
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Frequency Input Conditioner Cards (e.g., 10A40, 10A41-2C, AA41-2/4):
- Frequency Ranges: From 10% to 100% of 250 Hz to 32000 Hz.
- Threshold Level: Accommodates signals from 100 mV to 200 V.
- Excitation: Nominal 10 (±5) V-DC, ±50 mA maximum.
- Filter: 3-pole modified Butterworth (e.g., 3 dB down at 2 Hz).
- Step-Response Settling Time: Typically 55 to 770 msec to 1% of final value.
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Voltage Conditioner Cards (e.g., 10A60-4, 10A63-2, 10A64-8C, 10A65-8):
- Input Voltage Ranges: ±0.05 V-DC to ±200 V-DC (depending on model).
- Input Impedance: Differential: 1 MΩ to 2 MΩ.
- Common-Mode Rejection Ratio: DC: -60 dB to -120 dB.
- Filter: 3-pole modified Butterworth (e.g., 3 dB down at 5 Hz or 10 Hz).
- Step-Response Settling Time: Typically 150 to 400 msec to 1% of final value.
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AC RMS Conditioner Cards (e.g., 10A68-2, 10A69-4):
- Input Voltage/Current Ranges: Varies (e.g., 50 mV-AC to 500 V-AC, 50 mA to 5 A).
- Bandwidth: Varies by range (e.g., 40 Hz to 400 Hz at 0.1%).
- Filter: 3-pole modified Butterworth (e.g., 3 dB down at 5 Hz or 10 Hz).
- Step-Response Settling Time: Typically 100 to 250 msec to 1% of final value.
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Strain Gage Conditioner Cards (e.g., 10A70-2, 10A72-2C, 10A73-4, 10A74-4C, AA72-2/4):
- Transducer Types: Conventional 4-arm strain gage bridges (350 Ω or higher), 1/4-bridge, 1/2-bridge.
- Input Ranges: ±0.75 mV/V to ±3.00 mV/V (excitation-dependent).
- Excitation: Selectable 1, 5, or 10 V-DC.
- Input Impedance: Differential: greater than 10,000 MΩ.
- Filter: 3-pole modified Butterworth (e.g., 3 dB down at 10 Hz).
- Step-Response Settling Time: Typically 100 to 150 msec to 1% of final value.
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Vibration Conditioner Cards (e.g., 10A76, 10A96):
- Input Range: Up to 50 mV, full scale, from strain gage accelerometers.
- Excitation: Selectable 1, 5, or 10 V-DC nominal (10A76); Fixed ±15 V-DC nominal (10A96).
- Filter: LOW-PASS, BAND-PASS (selectable cutoff frequencies), HIGH-PASS (selectable gain).
- Step-Response Settling Time: Typically 100 to 190 msec to 1% of final value.
Usage Features:
- Mnemonic Commands: The system is preprogrammed to respond to specific ASCII mnemonic commands for setup, interrogation, data acquisition, and imperative functions.
- Keyboard Entry: Commands can be entered locally via an Extended Keyboard (Model 10P80D or 10P80A) or an Operator's Keyboard (Model 10P25D or 10P25A). Front-panel keypads (10KU-KD, 10K4T-KD) offer simplified setup and interrogation.
- Remote Entry: Commands can be entered remotely via an external computer or terminal connected to the mainframe's Computer Interface Port (or optional Auxiliary/Satellite Interface Ports).
- Display Customization: Users can define and store up to 40 (A-sized) or 100 (B-sized) data display page formats, including channel lists, unit legends, and visual effects (blink, flash, reverse, half intensity, color changes) for data fields, bit-state fields, and messages.
- Calibration Methods: Supports various calibration techniques including CPU-based absolute calibration, calculated calibration (FRQ, MVV), two-point (deadweight) calibration (ZRO, FRC), and simulated (shunt) calibration (SHP, SHN, RSM).
- Automatic Command Execution: EXECUTE (EXU) and COMMAND (CMD) statements allow for automatic execution of commands based on predefined logic events or conditional bit states.
- Linearization: Custom linearization (LIN command) can be applied to data channels for improved resolution or to correct for non-linear transducer responses.
- Internal Counter/Timer Functions: Event counting (INC, DEC) and time-interval counting via pseudochannels.
- Optional Features: Support for various optional cards and accessories such as Analog Output Cards (10AAO-8, 10CAI-8), Logic and Digital I/O Cards (10AIO-16, 10BIO-16), Analog Peak Capture Cards (10A79-4), FIFO Buffer Memory Cards (10AFIFO), PID Loop Control Cards (10APID), Satellite Network Systems (10BD4, 10BD1), History Recording Cards (10BDR64), and Video Graphics Memory Cards (10VGM500).
Maintenance Features:
- EEPROM Write Protect Switch: A physical switch (or software command BIT 999 = 1/0) to protect critical system setup information in EEPROM memory from accidental writes or power interruptions. It is recommended to keep this switch OFF during normal operation and ON only during setup procedures.
- Line-Voltage Setting: A Voltage Selector Switch on the rear panel (for A-sized mainframes) or Power Selector Board (for B-sized mainframes) allows users to set the mainframe for the local line voltage (110 or 220 V-AC).
- Fuse/Circuit Breaker: Mainframes are equipped with a buss fuse or circuit breaker for power-supply protection. Instructions are provided for checking and replacing fuses.
- Circuit-Card Insertion and Removal: "AA" and "10A" conditioner cards (ending in "C") are hot-pluggable, meaning they can be inserted or removed without turning off mainframe power. Other cards require the mainframe to be OFF.
- Handling Cards with Internal Battery: Specific precautions are given for handling circuit boards containing lithium batteries to prevent damage.
- Air Cooling Requirements: All mainframes require adequate cooling, with recommendations for clearance during rack-mounting and a warning against operating without front bezels.
- Dust Covers: Protective "T" inserts are provided for unused slot connectors to prevent dust accumulation.
- Diagnostic Tools: Optional diagnostic cards (e.g., 10AEX-20, 10AST, 10AHM, 10BDHM) are available for system diagnosis and repair.
- System Status Indicators: Front-panel LEDs (ERR, CHR, MNE, RET, DTR, RTS, XMT, RCV, KBD, E2P) provide continuous monitoring of system communication links and operational status, aiding in troubleshooting.
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