Communication Option 002 Troubleshooting; Baud Rate Generator Functional Check - Wavetek 75 Instruction Manual

Table 6-28. Communication Option 002 Troubleshooting
Fault
I
Setup
1
Check
I
Results Desired
A 2.4576 MHz sinusoid, approxi-
mately 0 to 5V.
A high.
A low.
Non-responsive, in whole or
in part.
Reset.
(
Set baud rate switches
1 I
U1-9, -11,
-1 3 thru -22.
No stuck bits.
Connect instrument to
RS-232-C controller. Set
controller in loop that
"writes to'' and "reads
from" the Model 75.
NOTE: Figure 6-7 shows
a sample program
written on a Wavetek
Model 6000.
as indicated in table
6-29.
U1-2 and -7,
and U3-8.
U 3-8.
U3-3 and -6.
U1-4.
1
The frequency shown in table 6-29.
No stuck bits.
Logic levels
k
12V.
Both are
+
12V.
Table 6-29. Baud Rate Generator Functional Check
Scans by ArtekMedia O 2006
Baud Rate
19,200
9600
4800
2400
1800
1200
600
300
200
1 50
134.5
110
7 5
50
SW1-2
Closed
Closed
Closed
Open
Open
Open
Open
Closed
Closed
Open
Closed
Open
Open
Open
SW1-1
Open
Closed
Open
Open
Closed
Open
Closed
Open
Open
Closed
Closed
Open
Open
Closed
Frequency
307.2 kHz
153.6 kHz
76.8 kHz
38.4 kHz
28.8 kHz
19.2 kHz
9.6 kHz
4.8 kHz
3.2 kHz
2.4 kHz
2.1 kHz
1.7 kHz
1.2 kHz
800 Hz
SW1-3
Closed
Closed
Closed
Open
Closed
Closed
Open
Open
Open
Open
Open
Open
Closed
Closed
SW1-4
Closed
Open
Open
Closed
Open
Open
Closed
Open
Closed
Open
Closed
Open
Closed
Closed