Control Inputs; Table 6-12: Status Output Pin Assignments - Teledyne 300E Instruction Manual

Model 300E Carbon Monoxide Analyzer
Instruction Manual
The pin assignments for the Status Outputs are:
Output #
1
2
3
4
5
6
7
8
D
EMITER BUSS
+
Digital Ground

6.7.2. Control Inputs

Several Control Inputs are provided via an 10-pin connector labeled CONTROL IN
on the analyzer's rear panel. These are opto-isolated digital inputs that are
activated when a 5 VDC signal is applied to the "+" pin.
These inputs allow the user to remotely initiate Zero and Span calibrations. Two
methods for energizing the inputs is provided below; the first using the internal
+5V available on the CONTROL IN connector and the second, if an external,
isolated supply is employed.
P/N 04288 REV: A
Table 6–12: Status Output Pin Assignments
Status
Definition
SYSTEM OK On if no faults are present.
On if CO concentration measurement is valid.
CONC VALID
If the CO concentration measurement is invalid, this bit is OFF.
HIGH RANGE On if unit is in high range of DUAL or AUTO Range Modes.
ZERO CAL On whenever the instruments ZERO point is being calibrated.
SPAN CAL On whenever the instruments SPAN point is being calibrated.
DIAG MODE On whenever the instrument is in DIAGNOSTIC mode.
SPARE
SPARE
The emitters of the transistors on pins 1-8 are bussed together.
DC POWER + 5 VDC
The ground level from the analyzer's internal DC Power
Supplies.
Operating Instructions
Condition
87