Teledyne 9110T instruction manual Control Inputs, Status Outputs Check

Model 9110T NOx Analyzer Troubleshooting & Service

5. Alternately, turn on and off the output noting the voltage on the voltmeter.

∙It should vary between 0 volts for ON and 5 volts for OFF.

Table 12-10: Status Outputs Check

PIN (LEFT TO RIGHT)	STATUS
1	ST_SYSTEM_OK
2	ST_CONC_VALID
3	ST_HIGH_RANGE
4	ST_ZERO_CAL
5	ST_SPAN_CAL
6	ST_DIAG_MODE
7	Not Used on 9110T
8	ST_O2_CAL

12.7.6.4. Control Inputs

The control input bits can be tested by applying a trigger voltage to an input and watching changes in the status of the associated function under the SIGNAL I/O submenu:

EXAMPLE: to test the “A” control input:

1.Under the DIAG Signal I/O menu (see Section 12.1.3), scroll through the inputs and outputs until you get to the output named EXT_ZERO_CAL.

2.Connect a jumper from the “+” pin on the appropriate connector to the “U” on the same connector.

3.Connect a second jumper from the “” pin on the connector to the “A” pin.

4.The status of EXT_ZERO_CAL should change to read “ON”.

5.Connect a second jumper from the “” pin on the connector to the “B” pin.

6.The status of EXT_ZERO_CAL should change to read “ON”.

Table 12-11: 9110T Control Input Pin Assignments and Corresponding Signal I/O Functions

INPUT	CORRESPONDING I/O SIGNAL
A	EXT_ZERO_CAL
B	EXT_SPAN_CAL1
C, D, E& F	NOT USED

Teledyne Analytical Instruments 288