Seintek S2401 - Page 5

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4. Calibration................................................................................ 4-6
4.1. Introduction.................................................................... 4-6
4.2. Preparation before Entering Calibration Mode.............. 4-6
4.2.1. Voltage test .......................................................... 4-6
4.2.2. Setting for RS232C.............................................. 4-6
4.3. Entering Calibration Mode............................................. 4-7
4.4. Calibration Scope Center .............................................. 4-7
4.5. Calibration zero point of DMM function......................... 4-8
4.5.1. DC Volts Calibration............................................. 4-8
4.5.2. AC Volts Calibration............................................. 4-8
4.5.3. Ohms Calibration ................................................. 4-9
4.5.4. Frequency Calibration.......................................... 4-9
4.6. Exiting Calibration Mode ............................................... 4-9
5. List of Replaceable Parts........................................................ 5-1
5.1. Introduction.................................................................... 5-1
5.2. How to Obtain Parts ...................................................... 5-1
5.3. How to Contact Seintek................................................. 5-2
5.4. Newer Instruments ........................................................ 5-2
5.5. Parts .............................................................................. 5-2
6. Schematic Diagrams ............................................................... 6-1
6.1.
S2401 & S2800 ............................................................. 6-1
6.1.1. Main PCB Assembly ............................................ 6-1
6.1.2. SUB PCB Assembly............................................. 6-1
6.1.3. Analog.................................................................. 6-1
6.1.4. Digital ................................................................... 6-1
6.1.5. Channel A ............................................................ 6-1
6.1.6. Channel B ............................................................ 6-1
6.2. S2405 & S2505 ............................................................. 6-1
6.2.1. Main PCB Assembly ............................................ 6-1
6.2.2. SUB PCB Assembly............................................. 6-1
6.2.3. Analog.................................................................. 6-1
6.2.4. Digital ................................................................... 6-1
6.2.5. Channel A ............................................................ 6-1
6.2.6. Channel B ............................................................ 6-1
7. Troubleshooting ...................................................................... 7-1
7.1. Introduction.................................................................... 7-1