Table Of Contents - GRAPHTEC midi LOGGER GL350 Service Manual

1. CONFIGURATION .................................................................................. 1-1
1.1 Model Configuration ................................................................................................... 1-1
1.2 Accessories and Options ........................................................................................... 1-1
2. UPGRADING THE FIRMWARE ............................................................. 2-1
2.1 How to Upgrade the GL450/400/350 Flash ROM from the PCMCIA Card .............. 2-1
2.2 How to Upgrade the GL400/350 Flash ROM from the TCP/IP Port ......................... 2-2
3. DISASSEMBLY AND REASSEMBLY .................................................... 3-1
3.1 Notes on Disassembly and Reassembly .................................................................. 3-1
3.2 Mounting and Removing the Input Terminal Unit .................................................... 3-1
3.3 Replacing the Main Board ..........................................................................................3-3
3.4 Replacing the AMP Board ..........................................................................................3-6
3.5 Replacing the LCD (GL450/400 only) ........................................................................3-9
4. SETUP PROCEDURES .......................................................................... 4-1
4.1 Entering the System Setup Menu .............................................................................. 4-1
4.2 Setting Up Setup1 (Voltage Input) ............................................................................. 4-2
4.3 Setup2 (Room Temperature Compensation) ............................................................4-5
4.4 Setting Up Setup3 (RTD Temp.) .................................................................................4-8
5. INSPECTION AND CHECK PROCEDURES ......................................... 5-1
5.1 Insulation Resistance ................................................................................................. 5-1
5.2 Inspection and Check Methods ................................................................................. 5-2
5.2.1 Measurement Accuracy ........................................................................................................ 5-4
5.2.2 Temperature Accuracy ...........................................................................................................5-7
5.2.3 RTD Accuracy ....................................................................................................................... 5-9
5.3 Signal-to-Noise Ratio ................................................................................................ 5-10
6. PARTS LISTS ......................................................................................... 6-1
6.1 Recommended Parts List ........................................................................................... 6-1
6.2 Parts Lists .................................................................................................................... 6-2
6.2.1 Top Cover, GL450/400 .......................................................................................................... 6-2
6.2.2 LCD & Key Panel, GL450/400 .............................................................................................. 6-3
6.2.3 Top Cover, Reverse Side, GL450/400 .................................................................................. 6-4
6.2.4 Top Cover, GL350 ................................................................................................................. 6-5
6.2.5 Main Frame ........................................................................................................................... 6-6
6.2.6 Bottom Case ..........................................................................................................................6-7
6.2.7 10-CH Input Terminal Unit .................................................................................................... 6-8
6.2.8 20-CH Input Terminal Unit .................................................................................................... 6-9
7. Block Diagram ....................................................................................... 7-1
7.2 Block Diagram ............................................................................................................. 7-1
7.2 Wirring Diagram .......................................................................................................... 7-2
GL400-UM-251-9370
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