Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 171)

Operating Instructions Model 9110TH NOx Analyzer
Teledyne Analytical Instruments 151
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
S
P
A
N
ZER
O
SP
AN
Figure 4-16: Control Inputs with Local 5 V Power Supply
LO
W
SPAN SPAN
-
CONTROL IN
+
5 VDC Power
Supply
ZERO
A B C D E F U +
Figure 4-17: Control Inputs with External 5 V Power Supply
4.15.2. REMOTE OPERATION
4.15.2.1. Terminal Operating Modes
The Model 9110TH/M 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
API 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.