Control Inputs - Teledyne T101 Operation Manual

Teledyne ML – T101 Operation Manual
Table 5-1. Status Output Pin Assignments
CONNECTOR PIN
1
2
3
4
5
6
7
8
D
+

5.1.1.2. Control Inputs

Table 5-2. Control Input Pin Assignments
INPUT
A
B
C
D
E
F
U
+
STATUS
System Ok ON if no faults are present.
Conc Valid ON if concentration measurement is valid, OFF when invalid.
High Range ON if unit is in high range of any AUTO range mode.
Zero Cal ON whenever the instrument is in ZERO calibration mode.
Span Cal ON whenever the instrument is in SPAN calibration mode.
Diag Mode ON whenever the instrument is in DIAGNOSTIC mode.
Low Range ON if unit is in low range of any AUTO range mode.
Unused
The emitters of the transistors on pins 1-8 are bussed
Emitter Bus
together. For most applications, this pin should be connected
to the circuit ground of the receiving device.
+ 5 VDC source, 30 mA maximum (combined rating with
Dc Power
Control Inputs)
The ground from the analyzer's internal, 5/±15 VDC power
Digital Ground
supply.
Control inputs allow the user to remotely initiate ZERO and SPAN calibration modes are
provided through a 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 from the
"U" pin is connected to the respective input pin.
STATUS
Zero calibration mode is activated. The mode field of the
External Zero Cal
display will read ZERO CAL R.
Span calibration mode is activated. The mode field of the
External Span Cal
display will read SPAN CAL R.
External Low Low span (mid-point) calibration mode is activated. The mode
Span Cal field of the display will read LO CAL R.
Unused
Unused
Unused
Digital Ground Provided to ground an external device (e.g., recorder).
DC Power For Input for +5 VDC required to activate inputs A - F. This voltage
Input Pull Ups can be taken from an external source or from the "+" pin.
Internal +5v Internal source of +5V which can be used to activate inputs
Supply when connected to pin U.
CONDITION (ON=CONDUCTING)
CONDITION WHEN ENABLED
Remote Operation
145