Tektronix 1705A Cmos, Ecl, Schottky Signal, Diodes Schottky TTL, HF Bipolar Tran, Sistors Jfets

Maintenance

detergent and water. Abrasive cleaners should not be used. If the circuit board assemblies must be removed for cleaning, follow the instructions for removal/re- placement under the heading of Corrective Maintenance.

After cleaning, allow the interior to thoroughly dry before applying power to the instrument.

CAUTION. Do not allow water to get inside any enclosed assembly or component. Do not clean any plastic materials with organic cleaning solvents, such as benzene, toluene, xylene, acetone, or similar compounds, because they may damage the plastic.

Visual Inspection After cleaning, carefully check the instrument for defective connections, damaged parts, and improperly seated transistors or integrated circuits. The remedy for most visible defects is obvious; however, if heat-damaged parts are discovered, determine the cause of overheating before replacing the damaged part, to prevent additional damage.

Periodic checks of the transistors and integrated circuits are not recommended. The best measure of performance is the actual operation of the component in the circuit.

Static- Sensitive This instrument contains electrical components that are susceptible to damage Components from static discharge. Static voltages 1 kV to 30 kV are common in unprotected

environments. Table 6-1 shows the relative static discharge susceptibility of various semiconductor classes.

Table 6- 1: Static Susceptibility

Relative Susceptibility Levels		Voltage
1	CMOS	100 V -- 500 V
2	ECL	200 V -- 500 V
3	SCHOTTKY SIGNAL	250 V
	DIODES
4	SCHOTTKY TTL	500 V
5	HF BIPOLAR TRAN-	400 to 600 V
	SISTORS
6	JFETS	600 to 800 V
7	LINEAR ￿CIRCUITS	400 to 1000 V est.
8	LOW POWER SCHOTT-	900 V
	KY TTL
9	TTL	1200 V

6- 2 1705A Spectrum Monitor