Teledyne t320u Manuale Utente

Setup Menu 

Teledyne API – Model T300/T300M CO Analyzer 

120 

5.9.3. ANALOG I/O CONFIGURATION  

The T300/T300M Analyzer comes equipped with four analog outputs.   

  The first two outputs (A1 & A2) carry analog signals that represent the currently 

measured concentration of CO (see Section 5.4.1).   

  The third output (A3) is only active if the analyzer is equipped with one of the 

optional 2

nd

 gas sensors (e.g. O

2

 or CO

2

). 

  The fourth output (A4) outputs a signal that can be set to represent the current value 

of one of several test functions (see Table 5-9). 

Table 5-5 lists the analog I/O functions that are available in the T300/T300M Analyzer. 

Initiates a calibration of the A1, A2, A3 and A4 analog output channels that 
determines the slope and offset inherent in the circuitry of each output.  
These values are stored and applied to the output signals by the CPU 
automatically. 

Sets the basic electronic configuration of the A1 output (CO Concentration).   
There are four options: 

  RANGE

:  Selects the signal type (voltage or current loop) and level of the 

output. 

  REC OFS

: Allows them input of a DC offset to let the user manually adjust 

the output level. 

  AUTO CAL: Enables / Disables the AOUT CALIBRATED feature. 
  CALIBRATED: Performs the same calibration as AOUT CALIBRATED, 

but on this one channel only.   

  Same as for CONC_OUT_1 but for analog channel A2. 

  Same as for CONC_OUT_1 but for analog channel A3 but only if either the 

optional O

2

 or CO

2

 sensors are installed. 

  Same as for CONC_OUT_1 but for analog channel A4 (TEST CHANNEL). 

Initiates a calibration of the A-to-D Converter circuit located on the 
Motherboard. 

For each of 8 external analog input channels, shows the gain, offset, 
engineering units, and whether the channel is to show up as a Test function. 

1 

Any changes made to RANGE or REC_OFS require recalibration of this output. 

06864B DCN6314