Sigma BM-286A service manual Computers

6. TROUBLESHOOTING page 41

6.3. COMPUTERS

To check the DOS computer a VGA monitor can be connected to see if it is running and the output to the screen will look something like this:

(1,235,234,334,123,234,132)

The information that is being sent is door position and six detector counts.

The RS-232 data to the NT machine can be examined by using Hyperterminal. The settings should be:

COM1,9600,N,8,1

Use standard troubleshooting procedures on the NT machine.

6.4. SIGNAL INTERFACE ASSEMBLY AND DETECTORS

Channel boards (RCS-110) may be substituted with system power on, but the power must be turned off before changing the discriminator cards (RCS-120). This will ensure that the discriminator settings are updated.

NOTE:

If channel cards are replaced permanently, the channels affected must be recalibrated.

Model BM-286A