Setup - Communication Ports (Comm); Figure 6-5: Control Inputs With Local And External 5 V Power Supply; Table 6-15: Control Input Pin Assignments - Teledyne 200E Instruction Manual

Operating Instructions
Input
EXTERNAL ZERO
A
CAL
EXTERNAL SPAN
B
CAL
EXTERNAL LOW
C
SPAN CAL
D
E
F
DIGITAL GROUND
DC power for
U
Input pull ups
Internal +5V
+
Supply
There are two methods to activate control inputs. The internal +5V available from the "+"
pin is the most convenient method (see figure). However, to ensure that these inputs are
truly isolated, a separate, external 5 VDC power supply should be used.
CONTROL IN
A B C D E
Local Power Connections

Figure 6-5: Control Inputs with Local and External 5 V Power Supply

6.9. Setup - Communication Ports (COMM)

The M200E is equipped with two serial communication ports located on the rear panel
(Figure 3-3). Both ports operate similarly and give the user the ability to communicate with,
issue commands to, and receive data from the analyzer through an external computer
system or terminal. By default, both ports operate on the RS-232 protocol. The COM2 port,
74

Table 6-15: Control Input Pin Assignments

Status
Zero calibration mode is activated. The mode field of the
display will read ZERO CAL R .
Span calibration mode is activated. The mode field of the
display will read SPAN CAL R .
Low span (mid-point) calibration mode is activated. The
mode field of the display will read LO CAL R .
Unused
Unused
Unused
Provided to ground an external device (e.g., recorder).
Input for +5 VDC required to activate inputs A - F. This
voltage can be taken from an external source or from the
"+" pin.
Internal source of +5V which can be used to activate
inputs when connected to pin U.
+
F U
Model 200E Instruction Manual
Condition when enabled
CONTROL IN
A B C D E F
5 VDC Power
-
Supply
External Power Connections
044100102 Rev A
+
U
+