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Operating Instructions Teledyne API - Model 200EH/EM Operation Manual
142
There are two methods to activate control inputs. The internal +5V available from the “+” pin is the most
convenient method (see Figure 6-18). However, to ensure that these inputs are truly isolated, a separate,
external 5 VDC power supply should be used (see Figure 6-19).
CONTROL IN
A B C D E F U +
LOW SPAN
ZERO
SPAN
Figure 6-6-18: Control Inputs with local 5 V power supply
LOW SPAN
SPAN
-
CONTROL IN
+
5 VDC Power
Supply
ZERO
A B C D E F U +
Figure 6-6-19: Control Inputs with external 5 V power supply
6.15.2. REMOTE OPERATION USING THE EXTERNAL SERIAL I/O
6.15.2.1. Terminal Operating Modes
The Model 200EH/EM can be remotely configured, calibrated or queried for stored data through the serial ports.
As terminals and computers use different communication schemes, the analyzer supports two communicate
modes specifically designed to interface with these two types of devices.
Computer mode is used when the analyzer is connected to a computer with a dedicated
interface program such as APICOM. More information regarding APICOM can be found in later
in this section or on the Teledyne Instruments website at http://www.teledyne-
api.com/
software/apicom/.
Interactive mode is used with a terminal emulation programs such as HyperTerminal or a
“dumb” computer terminal. The commands that are used to operate the analyzer in this mode
are listed in Table 6-31 and in Appendix A-6.
04521C (DCN5731)