Teledyne 200AH 用户手册

 

0 

DSP_BROWNOUT 

NO 

Display brownout is used to keep the display from 
getting corrupted during low line voltage conditions. 
Circuitry on the Status/Temp board senses low line 
voltage and sets this bit. The CPU reads this and 
generates the BROWNOUT_RST signal described 
below. 

1 

EXT_ZERO_CAL 

NO 

Shows state of status input bit to cause the M200AH 
to enter Zero Calibration mode. Use to check external 
contact closure circuitry. 

2 

EXT_SPAN_CAL 

NO 

Shows state of status input bit to cause the M200AH 
to enter the Span Calibration mode. Use to check 
external contact closure circuitry. 

3 

EXT_LOW_SPAN 

NO 

Shows state of status input bit to switch the low span 
concentration valve in the zero/span valve option. 

4 

REMOTE_RANGE_HI 

NO 

Shows state of status input bit to switch the remote 
range control from low to high range. 

5 

SPAN_VALVE 

YES 

Switches the Span valve. Use this bit to test the valve 
function. 

6 

CAL_VALVE 

YES 

Switches the Cal valve. Use this bit to test the valve 
function. 

7 

NOX_VALVE 

YES 

Switches the NO/NO

x

 valve. Use this bit to test the 

valve function. 

8 

RCELL_HEATER 

YES 

Shows the status of the reaction cell heater. This has 
the same function as the LED in the PSM. 

9 

BLOCK_HEATER 

YES 

Shows the status of the sample flow orifice block 
heater. This has the same function as the LED in the 
PSM. 

10 

ELEC_TEST 

YES 

Turns on electric test bit in preamp. Should be used 
for troubleshooting Preamp logic lines. We 
recommend you use the ET button in the DIAG menu 
to operate electric test.