Teledyne T300, Operation Manual, Page: 54 / 426

Getting Started Teledyne API – Model T300/T300M CO Analyzer
52
CONTROL IN
A B C D E F U
+
LOW
S
PA
N
Z
E
R
O
CONTROL IN
A B C D E F U
+
LOW
S
PA
N
Z
E
R
O
-
+
5 VDC Power
Supply
Local Power Connections
External Power Connections
H
IG
H
S
PA
N
H
IG
H
S
PA
N
Figure 3-12: Control Input Connector
Table 3-7: Control Input Signals
INPUT # STATUS DEFINITION ON CONDITION
A REMOTE ZERO CAL
The analyzer is placed in Zero Calibration mode. The mode field of the
display will read
ZERO CAL R .
B REMOTE SPAN CAL
The analyzer is placed in span calibration mode as part of performing a low
span (midpoint) calibration. The mode field of the display will read
LO CAL
R .
C
REMOTE CAL HIGH RANGE
The analyzer is forced into high range for zero or span calibrations. This
only applies when the range mode is either DUAL or AUTO. The mode field
of the display will read
HI CAL R .
D, E
& F
SPARE
Digital Ground
The ground level from the analyzer’s internal DC power supplies (same as
chassis ground).
U External Power input Input pin for +5 VDC required to activate pins A – F.
+
5 VDC output
Internally generated 5V DC power. To activate inputs A – F, place a jumper
between this pin and the “U” pin. The maximum amperage through this port
is 300 mA (combined with the analog output supply, if used).
06864B DCN6314