158 Chapter 10
Communication with External Instruments Using Handler I/O Port
Electrical Characteristics
Electrical Characteristics
Input signal
All input signals are TTL compatible. Table 10-7 shows the electrical characteristics of
input signals. Figure 10-7 shows the circuit diagram of input signals.
Figure 10-7 Circuit diagram or input signals
Table 10-7 Electrical characteristics of input signals (typical)
Maximum rate input voltage -0.5 V to 5.5 V
Input voltage
High level 2.0 V to 5.0 V
Low level 0 V to 0.5 V
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