Teledyne Camera Accessories T100 사용자 설명서

12.6.7.4. CONTROL INPUTS 

The control input bits can be tested by the following procedure: 

1.  Connect a jumper from the +5 V pin on the STATUS connector to the U on the 

CONTROL IN connector. 

2.  Connect a second jumper from the 

 

 pin on the STATUS connector to the A pin on 

the CONTROL IN connector. The instrument should switch from SAMPLE mode to 
ZERO CAL R

 mode. 

3.  Connect a second jumper from the 

 

 pin on the STATUS connector to the B pin on 

the CONTROL IN connector. The instrument should switch from SAMPLE mode to 
SPAN CAL R

 mode. 

In each case, the T100 should return to SAMPLE mode when the jumper is removed. 

There are two major types of CPU board failures, a complete failure and a failure 
associated with the Disk-On-Module (DOM). If either of these failures occurs, contact 
the factory. 
For complete failures, assuming that the power supplies are operating properly and the 
wiring is intact, the CPU is faulty if on power-on, the watchdog LED on the 
motherboard is not flashing. 
In some rare circumstances, this failure may be caused by a bad IC on the motherboard, 
specifically U57, the large, 44 pin device on the lower right hand side of the board. If 
this is true, removing U57 from its socket will allow the instrument to start up but the 
measurements will be invalid. 
If the analyzer stops during initialization (the front panel display shows a fault or 
warning message), it is likely that the DOM, the firmware or the configuration and data 
files have been corrupted.  

This section provides general RS-232 communication information. 

12.6.9.1. GENERAL RS-232 TROUBLESHOOTING 

Teledyne API’s analyzers use the RS-232 protocol as the standard, serial 
communications protocol. RS-232 is a versatile standard, which has been used for many 
years but, at times, is difficult to configure. Teledyne API conforms to the standard pin 
assignments in the implementation of RS-232. Problems with RS-232 connections 
usually center around 4 general areas: 

  Incorrect cabling and connectors. This is the most common problem. Refer to 

Section 3.3.1.8 for connector, pin-out and setup information. 

  The communications (baud) rate and protocol parameters are incorrectly configured. 

Refer to 3.3.1.8 and 6.2 for baud rate information. 

  The COMM port communications mode is set incorrectly (refer to Section 6.2.1). 
  If a modem is used, additional configuration and wiring rules must be observed. 

Refer to Section 8.3. 

  Incorrect setting of the DTE - DCE Switch. Refer to Section 6.1. 

06807C DCN6650