Omega 865, User Manual

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7
5.2 DISASSEMBLY
5.2.1 Special Handling Of Static-Sensitive Devices
CMOS devices are designed to function at high impedance levels. Normal
static charge can destroy these devices. U101, U102, and U103 are all
static-sensitive devices, and steps 1 through 7 provide instructions on how
to avoid damaging these devices.
1. Devices should be handled and transported in protective
containers, anti-static tubes, or conductive foam.
2. Use a properly grounded workbench and a grounding wrist strap.
3. Handle device by the body only; do not touch terminals, pins, etc.
4. PC boards must be grounded to bench while inserting devices.
5. Use anti-static solder suckers.
6. Use grounded tip soldering irons.
7. After devices are soldered or inserted into sockets, they are
protected and normal handling can resume.
Step Setting Decade Resistance Allowable Reading
1 200°F 75,750 ohms –39.4 to –40.6
2 200°F 255,700 ohms –68.8 to –71.2
3 200°F 19,220 ohms –00.5 to 00.5
4 200°F 220.8 ohms 188.9 to 191.1
5 300°F 43 ohms 298 to 3021
MODEL 866
Table 5-1
PERFORMANCE VERIFICATION
MODEL 865
Step Setting Decade Resistance Allowable Reading
1 150°C 75,790 ohms –39.6 to –40.4
2 150°C 217,100 ohms –54.2 to –55.8
3 150°C 7,355 ohms –00.3 to 00.3
4 150°C 152.8 ohms 99.4 to 100.6
5 150°C 41.9 ohms 149.2 to 150.7