Teledyne Carbon Monoxide Analyzer 300 User Manual download pdf (Page 100)

micro-processor is also used to adjust for offset and gain needed to match DAC outputs

to external voltage standards, and no on board adjustments are needed or provided for

this function.

The outputs of all DAC's are "looped-back" to Analog input (via the Mother Board)

channels. This loop back allows for automatic micro-processor checking of A/D

10.6.3.3 Digital I/O lines

32 Digital Lines are used to provide the primary means for the micro-processor to control

various analyzer functions(valves, heaters, etc.) and to send and receive status conditions

to/from external equipment. These lines are configured as 8 digital inputs and 24 digital

outputs. The convention for all Digital I/O Lines is High (+5V)-True, Low (0V)-False.

10.6.3.4

Proper operation of the V/F board can be confirmed by performing an ADC calibration

procedure as described in Section 9.2. If this calibration procedure can be performed

correctly, it is highly probable that the V/F card is functioning properly.

If the V/F does not function properly, check the following:

1. Confirm the presence of appropriate power by checking for:

• +5V between TP 4 and TP 5

• +15V at TP 1 and TP 3

• -15V at TP 2 and TP 3

If any of these voltages are incorrect, check the DC Power Supply as

described in Section 10.6.4.

2. Confirm that all jumpers and switches on the V/F board are set properly,

as follows:

V/F BOARD JUMPERS - FACTORY SETTINGS

Factory Set Jumpers

Jumper Setting

JP1 1-2

JP2 1-2

B12 3-4

B14 ON

B15 Set to match input line frequency

TABLE 10.3

P/N 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 94

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 120 121

No comments

Teledyne Carbon Monoxide Analyzer 300 User Manual Page 100