Teledyne 400E, Instruction Manual, Page: 114 / 318

Operating Instructions Model 400E Ozone Analyzer
Instruction Manual
114 P/N 04316 Rev: B
Table 6-15: Control Input Pin Assignments
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
LO SPAN CAL
The Analyzer is placed in Lo Span Calibration mode. The mode
field of the display will read LO CAL R .
C
REMOTE
SPAN CAL
The Analyzer is placed in Span Calibration mode. The mode field
of the display will read SPAN CAL R .
D SPARE
E SPARE
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
The internally generated 5VDC power supply is available on this
pin. To activate inputs A – F place a jumper between this pin
and the “U” pin.
There are two methods for energizing the Control Inputs. The in5V
available from the pin labeled “+” is the most convenient method (see Figure 6-5),
however, to ensure that these inputs are truly isolated a separate, external 5 VDC
power supply should be used (see Figure 6-6).
CONTROL IN
A B C D E F U +
L
O
S
P
A
N
Z
E
R
O
S
P
A
N
Figure 6-5: Control Inputs w/ Local 5 VDC Power Supply