Table 4-29: Status Output Pin Assignments - Teledyne T200H User Manual

Teledyne API - Model T200H/T200M Operation Manual
CONNECTOR
PIN
1
2
3
4
5
6
7
8
D
+
4.15.1.2. Control Inputs
INPUT STATUS
A
B
C
D, E & F
DIGITAL GROUND
U
+ Internal +5V Supply
07270D DCN7141

Table 4-29: Status Output Pin Assignments

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 together. For
EMITTER BUS
most applications, this pin should be connected to the circuit ground
of the receiving device.
DC POWER
+ 5 VDC, 30 mA maximum (combined rating with Control Inputs).
DIGITAL
The ground from the analyzer's internal, 5 VDC power supply.
GROUND
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.
Table 4-30: Control Input Pin Assignments
CONDITION WHEN ENABLED
EXTERNAL ZERO
Zero calibration mode is activated. The mode field of the display
CAL will read ZERO CAL R.
EXTERNAL SPAN
Span calibration mode is activated. The mode field of the display
CAL will read SPAN CAL R.
EXTERNAL LOW Low span (mid-point) calibration mode is activated. The mode field
SPAN CAL of the display will read LO CAL R.
Unused
Provided to ground an external device (e.g., recorder).
DC power for Input Input for +5 VDC required to activate inputs A - F. This voltage can
pull ups 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.
CONDITION (ON=CONDUCTING)
Operating Instructions
165