Troubleshooting the modem connection, 12-6 | Teledyne 300M specification

ENABLE MODEM TRANSMISSION.

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

The modem is configured as Data Communications Equipment (DCE), and may have additional signal requirements to enable transmission. See modem troubleshooting section below.

NOTE

MODEMS ARE ESPECIALLY DIFFICULT BECAUSE THEY MAY HAVE PINS THAT NEED TO BE AT CERTAIN EIA RS-232 LEVELS BEFORE THE MODEM WILL TRANSMIT DATA. THE MOST COMMON REQUIREMENT IS THE READY TO SEND (RTS) SIGNAL MUST BE AT LOGIC HIGH (+5V TO +15V) BEFORE THE MODEM WILL TRANSMIT.

THE TELEDYNE API ANALYZER SETS PIN 8 (RTS) TO 10 VOLTS TO

ENABLE MODEM TRANSMISSION.

Troubleshooting the modem connection:

First: Disconnect the RS-232 cable from the analyzer and verify (use a DVM) that you are getting a signal on Pin 2 of the RS232 port on the analyzer. The signal will be between -5V and -15V with respect to signal ground (pin 5). If not, there is a problem with the CPU board or the cable. This is the transmit (TD) signal out of the analyzer. This should then be connected to TD input on the modem, normally Pin 2. If the analyzer is equipped with a DTE/DCE switch, you may need to change its setting so the signal is on Pin 2.

Second: Go to the cable connected to the modem/terminal and verify (use a DVM) that you are getting a -5V to -15V signal on Pin 3 of the cable. This pin should be connected to Pin 3 of the Teledyne API analyzer.

Third: (for modems) Check that the voltage level on Pin 8 of the analyzer is between +5V and +15V. This pin should be connected (through the cable) to Pin 4 of the modem.

Now set the baud rate of the analyzer to the speed required by the modem and it should work. If you are still experiencing problems, a cable adapter may be needed. Please contact the factory for assistance.

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Teledyne 300M instruction manual Troubleshooting the modem connection, Enable Modem Transmission, 12-6

Contents

MODEL 300M CARBON MONOXIDE ANALYZER T-API 6565 NANCY RIDGE DRIVE SAN DIEGO, CATOLL-FREE FAX TEL 04033 and in the manner described in this manual SAFETY MESSAGESThe analyzer should only be used for the purpose LIST OF TABLES TABLE OF CONTENTSLIST OF FIGURES VIII 5 DIAGNOSTICS 3 PERFORMANCE TESTING4 SETUP MODE 6 HANDLING WARNINGS 8 CALIBRATION 9 ADJUSTMENTS10 TROUBLESHOOTING 10-1 12-1 11 ROUTINE MAINTENANCE12 SPARE PARTS LISTS 232 INTERFACE LIST OF FIGURES LIST OF TABLES viii 1 INTRODUCTION 1.2 WarrantyWARRANTY POLICY 02024c 1.1 Preface TERMS AND CONDITIONS 1.3 Principle of Operation Figure 1-1 Pneumatic Diagram 1.4 Specifications lift and carry the Model 300M 1.5 Installation and OverviewLeak check all fittings with soap solution suitable vent outside the analyzer area Power plug must have ground lug Page Figure 1-2 Carbon Monoxide Analyzer 1-10 1.6.2 Remote Contact Closures Zero/Span Inputs 1.6.1 Electrical Connections1.6 Electrical and Pneumatic Connections 1.6.3 Status Outputs Optional Table 1-1 Status Outputs 1.6.4 RS-2321.6.5 Pneumatic System 1-12 1.6.8 Exhaust Connections 1.6.6 Sample Gas Connection1.6.7 Zero/Span Valve Connections sample gas connections Figure 1-4 Rear Panel Pneumatic Connections 1-14 1.7 Operation Verification 1-15 Factory Installed Options Table 1-2 Final Test and Calibration Values1-16 Option Installed 1.8.2 Span Valve 1.8 Options1.8.1 Rack Mount With Slides 1-17 INTENTIONALLY BLANK 1-18 2 OPERATION 2.1 Key Features2.1.3 E2ROM Backup Of Software Configuration 2.1.1 CO Readout 2.1.5 Data Acquisition DAS 2.1.7 Password ProtectionTable 2-1 Password Levels 2.1.6 RS-232Interface 2.2 Front Panel 2.2.1 Front Panel Display Figure 2-1 Model 300M Front Panel Meaning Table 2-2 System ModesMode Meaning Table 2-3 Test MeasurementsTest Message 2.2.2 Programmable Push Buttons Table 2-4 Warning Messages 2.2.3 Status LED’s Figure 2-2 Illustration of Normal Display Meaning Table 2-5 Status LED’sState 2-10 INTENTIONALLY BLANK 3.1.1 Zero Check 3 PERFORMANCE TESTING3.1 Manual Zero/Span Check span gas into the analyzer 3.1.2 Span Check 3.1.3 Dual Range Calibration 3.2 Span Valve Option 3.3 Zero/Span Valves Option 3.4 Automatic Zero/Span Check 5 minutes later than the present time see Section 4.3 and 4.4 for setting present timeThe programmed start time must be a minimum of compute the carbon monoxide readingPage Table 3-1 Calibration Controls least to be established 3.9 Hold Off 3.7 Remote Zero/Span Check or Adjustment RS-2323.8 Power-OnHold Off 3-10 4 SETUP MODE 4.1 Setup Mode Operation 4.5 Adjusting the Clock Speed 4.3Setting the Time-of-Day4.4 Setting the Date 4.6.2 Dual Range Mode DUAL 4.6 Setting the CO Concentration Range4.6.1 Single Range Mode SNGL 4.6.3 Auto Range Mode AUTO 4.9 Setting the Analyzer I.D 4.7 Setting the Analog Output Offset4.8 Setting the RS-232Baud Rate 4.10 Disabling the Calibration Password 4.11 Data Acquisition System DAS 4.11.1 Data Channels 4.12 Software Configuration 4.13 Gas Alarms 4.13.1 Summary of Setup Functions Button Sequence Table 4-1 Setup FunctionsDefault Function Button Sequence Table 4-1 Setup Functions ContinuedDefault Function 4-10 INTENTIONALLY BLANK 5 DIAGNOSTICS 5.1 Test Measurements 5.2 Diagnostic Tests Table 5-1 Diagnostic Tests table continued 5.2.1 Signal I/OTable 5-2 I/O Signals table continued Table 5-2 I/O Signals ContinuedSignal Control table continued Table 5-2 I/O Signals ContinuedSignal Control Table 5-2 I/O Signals Continued 5.2.2 Analog Output Test5.2.3 Electric Test 5.3 M300M Internal Variables Table 5-3 M300M Variables INTENTIONALLY BLANK 6 HANDLING WARNINGS INTENTIONALLY BLANK Table 7-1 RS-232Port Setup - Front Panel 7 RS-232COMMUNICATIONS 7.1 DAS Reporting Table 7-2 RS-232Message TypesPage 7.2 Warnings Warning Message Cleared Table 7-3 RS-232Warning Message Clear CommandsCommand 7.3 Status/Control Table 7-4 Status Reports Table 7-5 Control Commands when the analyzer is in the sample mode Table 7-7 Diagnostic Reports 7.4 DiagnosticsTable 7-6 Diagnostic Commands the analyzer is in sample mode 7.5 Test Measurements Command Table 7-8 Test Measurement Request Commands7-10 Test Measurement 7.6 Viewing and Modifying Variables 7-11 Table 7-9 RS-232Variable Names 7-12 8 CALIBRATION 8.1 Required Equipment and Gas Standards Figure 8-1 Gas Generation System Figure 8-2 Inlet Venting Recommendations 8.2 Multi-PointCalibration Qv × L = Qa × D 8.2.1Procedure Page Page 8.3 Zero/Span Checking INTENTIONALLY BLANK 9.1.1 Box Temperature Limits 9 ADJUSTMENTS9.1 Power Supply Board Adjustment Figure 9-1:M300M Electrical Block Diagram 9.2 A/D - D/A Calibration Procedure the value on the voltmeter will remain constantPage 9.4 Output Voltage Range Changes 9.3 Dark Current Signal Adjust ProcedureTo adjust analog recorder offset, see Section 9.5 Flow Readout Adjustment 9.6 DC Power Supply 9.7 CPU INTENTIONALLY BLANK 10-1 10 TROUBLESHOOTING10.1 Overview 10.2.1 Checking the Power Sub-Systems 10-2 10.2.3Checking the Keyboard 10.3 Troubleshooting Using Warning Messages10.2.2 Checking the CPU and Display 10-3 Warning Message Table 10-1 Warning Messages10-4 Meaning 10.4 Troubleshooting Using Test Function Values 10-5 Test Function Table 10-2 Test Function Values10-6 Meaning 10.5.2Noisy, Unstable, or Non-LinearSpan Readings 10.5 Troubleshooting Dynamic Problems10.5.1Noisy or Unstable Readings at Zero 10.5.3Slow Response to Changes in Concentration 10.5.6Cannot Span or Cannot Dynamic Span 10.6.1 Troubleshooting Flow Problems10.5.5Cannot Zero or Cannot Dynamic Zero 10-8 Low Flow Hazardous voltages present - use cautionFlow is zero High Flow Optical Bench Temperature 10.6.2 Troubleshooting Temperature ProblemsSample Temperature Gas Filter Wheel Temperature Hazardous voltages present - use caution 10.6.3 Checking the V/F Card10-11 Table 10-3 V/F Board Jumpers - Factory Settings 10-12 10-13 10.6.3.1 Analog Inputs10.6.3.2 Digital to Analog Converters 10-14 10.6.4 Checking the DC Power Supply Board10.6.3.3 Digital I/O Lines 10.6.5 Checking the Synchronous Demodulator Board 10-15 Figure 10-2 Detector Waveform 10.6.6 Checking the Opto InterrupterFigure 10-1 Opto Pickup Waveform 10-16 10.6.7 Flow/Pressure Sensor 10-17 10.7 Warranty/Repair Questionnaire 10-18 Table 11-1 Maintenance Schedule 11 ROUTINE MAINTENANCE11.1 Model 300M Maintenance Schedule 11-1 11.3Leak Checking 11.2Replacement of Sample Filter11.3.1 Using a Leak Checker Do not exceed 15 PSI of pressure vacuum. This may cause damage to the analyzer the solution may enter and contaminate the cell11.3.2 Leak Self Test Use only bubbles, not liquid 11-4 INTENTIONALLY BLANK 12-1 12 SPARE PARTS LISTS12.1 Spare parts for CE Mark units Includes 12.2 Model 300M Expendables kit12.3 Model 300M Spare parts kit for one unit 12-2 Includes 12.4 Model 300M Level 1 parts kit for ten units12-3 Cables & Adapters come in 4 general types ConnectorsSignal 12-4 Wiring 12-5 12-6 Troubleshooting the modem connectionENABLE MODEM TRANSMISSION Title APPENDIX B Electrical drawing indexDrawing Number 12-7