Tektronix 1710J Series, Инструкция по эксплуатации

Страница: 142 / 252

Maintenance
8–2
1710J-Series Waveform Monitors
Preparation
The servicing instructions that are in this manual are intended for qualified
service personnel.
Before initiating any maintenance activity be sure to read the Safety Summery at
the front of the manual and the Servicing Safety Summery located on the page
that separates the operating information from the servicing information.
Operating instructions are contained in the Operating Basics section, be sure to
read this section if you need more information on how the 1710J–Series
Waveform Monitor is used.
Handling Static Sensitive Components
This instrument contains electrical components that are susceptible to damage
from static discharge. Static voltages from 1 kV to 30 kV are common in
unprotected environments. Table 8–1 shows the relative static discharge
susceptibility of various semiconductor classes.
Table 8–1: Static Susceptibility
Relative Susceptibility Levels Voltage
2 ECL 200 V – 500 V
3 Schottky Signal Diodes 250 V
4 Schottky TTL 500 V
5 HF Bipolar Transistors 400 V – 600 V
6 JFET’s 600 V – 800 V
7 Linear Microcircuits 400 V – 1000 V
8 Low Power Schottky TTL 900 V
9 TTL 1200 V
Observe the following precautions to avoid damaging static–sensitive devices:
1. Minimize handling of static–sensitive components.
2. Transport and store static–sensitive components or assemblies in their
original containers, on a metal rail, or on conductive foam. Label any
package that contains static–sensitive components or assemblies.
3. Discharge the static voltage from your body by wearing a wrist grounding
strap when handling static–sensitive components. [Service assemblies
containing static–sensitive components at static–free work stations.]
Handling Precautions