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Teledyne API Model 200A NO
X
Analyzer Instruction Manual, 02246, Rev. G, DCN 5247
4.2.3 Computer Hardware and Software
CPU Board
The M200A Analyzer is operated by an NEC V40 microprocessor. Computer communication is
done via 2 major hardware assemblies, the V/F board and the front panel display/keyboard. The
computer's multitasking operating system allows it to control the instrument, monitor test points,
generate analog outputs and provide a user interface via the display, keyboard and RS-232 port.
These operations appear to be happening simultaneously but are actually done sequentially based
on a priority queuing system maintained by the operating system. The jobs are queued for
execution only when needed, therefore the system is very efficient with computer resources. The
M200A is a true computer based instrument. The microprocessor does most of the instrument
control functions such as valve switching and temperature control. Data collection and
processing are done entirely in the CPU with the final concentration values being sent to a D/A
converter to produce the instrument analog output.
The computer memory is divided into 3 sections: ROM memory contains the multi-tasking
operating system code plus the instructions that run the instrument. The RAM memory is used to
hold temporary variables and current concentration data. The EEPROM memory contains the
instrument set-up variables such as range and instrument ID number. The EEPROM data is non-
volatile so the instrument can lose power and the current set-up information is preserved.
4.2.4 V/F Board
The V/F board is multifunctional, consisting of A/D input channels, digital I/O channels, and
analog output channels. Communication with the computer is via a STD bus interface. The
computer receives all of the instrument data and provides all control functions through the V/F
board.
4.2.5 Front Panel
The front panel of the M200A is shown in Table 2-2-4. The front panel consists of a 2 line
display and keyboard, 3 status LED's and power switch. Communication with the display,
keyboard, and status LED's is done via the computer's on-board parallel port. The M200A was
designed as a computer controlled instrument, therefore all major operations can be controlled
from the front panel display and keyboard.
The display consists of 2 lines of 40 characters each. The top line is divided into 3 fields, and
displays information. The first field is the mode field. A list of operating modes is given in
Table 5-5-9.
4-4
PRINTED DOCUMENTS ARE UNCONTROLLED
- TELEDYNE 1
- HIGHLIGHTS 2
- MODEL 200A 4
- NITROGEN OXIDE ANALYZER 4
- SAFETY MESSAGES 6
- TABLE OF CONTENTS 8
- LIST OF FIGURES 12
- LIST OF TABLES 13
- 1 HOW TO USE THIS MANUAL 16
- 2 GETTING STARTED 18
- 2.3 Initial Operation 23
- WARRANTY 32
- 3.3 Warranty 34
- TERMS AND CONDITIONS 35
- 4 THE M200A NO 36
- ANALYZER 36
- 4.2 Operation Summary 38
- 4.2.4 V/F Board 39
- 4.2.5 Front Panel 39
- 4.2.6 Power Supply Module 41
- 4.2.8 Ozone Generator 44
- 4.2.9 Molydbenum Converter 44
- 5 SOFTWARE FEATURES 46
- 5.1.1 Sample Menu 49
- 5.1.2 Set-Up Menu 50
- 5.2 Sample Mode 53
- 5.3 Set-Up Mode 59
- 5.3.4 Range Menu 61
- 5.3.5 Password Enable 65
- 5.3.6 Time of Day Clock 65
- 5.3.7 Diagnostic Mode 65
- 5.3.8 Communications Menu 65
- 5.3.9 Variables Menu (VARS) 66
- 5.4 Status Output 67
- 5.5 RS-232 Interface 68
- 5.5.2 Command Summary 73
- 5.5.8 Internal Variables 84
- 6.1 Rack Mount Options 86
- 6.2 Zero/Span Valves 86
- Mode No. Mode Name Action 88
- 6.5 Permeation Tube 90
- Zero/Span Valves Option 99
- NO and NO 101
- 7.6 Calibrate on NO 102
- Permeation Tube 102
- Closure 104
- 7.8.3 Data Recording Device 108
- 223 ONOONO 109
- = analyzer flow demand (cm 110
- /min (110/100) = 550 cm 111
- = 500 cm 111
- 7.8.7 Calibration Frequency 120
- 7.8.10 ZERO and SPAN Checks 123
- 7.10 Calibration Quality 128
- 7.11 References 130
- 8 MAINTENANCE 132
- Teledyne API Model 200A NO 142
- 8.9 Leak Check Procedure 146
- (table continued) 151
- 9.2 Performance Problems 173
- 9.2.1 AC Power Check 174
- 9.2.2 Flow Check 174
- 9.2.4 Negative Output 176
- 9.2.5 Excessive Noise 176
- 9.2.6 Unstable Span 177
- 9.2.7 Unstable Zero 178
- 9.2.8 Inability to Span 178
- 9.2.9 Inability to Zero 179
- 9.2.10 Non-Linear Response 180
- 9.2.11 Slow Response 181
- 9.3.2 RS-232 Communications 185
- *Required settings 191
- 9.3.4 Status/Temp Board 194
- 9.3.5 Power Supply Module 196
- C. The 200
- 9.3.6 Ozone Generator 201
- 9.3.7 Flow/Pressure Sensor 204
- 9.3.8 NO 209
- Sensor Module 209
- 9.3.10 Pneumatic System 214
- 10 M200A SPARE PARTS LIST 216
- Part No. Description 217
- Includes: Qty 220
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