Communications - Teledyne 9110AH Instruction Manual

TELEDYNE Model 9110AH NO Analyzer Operator Manual, 01620, Rev. F
X
9.3.1.3 Front Panel Keyboard
The keyboard consists of 8 keys and 3 LED's. Key strokes are sent to the SBC40 computers'
parallel port. The computer software detects the key strokes via CPU interrupts. The bottom
line of the display consists of 40 characters which is divided into 8 - 5 character fields. Each
field defines the function of the key immediately below it. The definition of the keys is variable
and depends on the menu level of the software.
To check the operation of the keyboard, each key should perform an operation indicated by its
current definition shown on the second line of the display.
Example #1 - testing key#1 (left most key).
At the top level menu key #1 is defined as the TEST function. Pressing this key should cause
the middle field of the top line of the display to show the various test functions.
Example #2 - testing key #8 (right most key). At the top level menu Key #8 is defined as the
SETUP key. Pressing key #8 should cause the SETUP menu to be displayed.
Example #3 - If the 5 character field above any key is blank, the key is not defined, pressing the
key has no effect.
The 3 status LED's indicate several functional states of the instrument such as calibration, fault,
and sample modes. The state of the LED's is controlled by 3 lines on the parallel port of the
SBC40. Functioning of the LED's can be checked by:
1. Turn off the M9110AH power.
2. While watching the LED's, turn on the instrument power.
3. When the power comes up, the computer momentarily applies power to all 3 LED's for
approximately 1 sec. If all the LED's are observed to light, they are working properly.
9.3.2 RS-232 Communications
The M9110AH uses the RS-232 communications protocol to allow the instrument to be
connected to a variety of computer based equipment. RS-232 has been used for many years and
is well documented. Generally, The M9110AH uses the RS-232 communications protocol to
allow the instrument to be connected to a variety every manufacturer observes the signal and
timing requirements of the protocol very carefully. Problems arise when trying to specify
connectors, and wiring diagrams that attach the analyzer to various devices.
9-34