Table 4-10. GPIB Board S.A. Test No. 5
Description: This test checks the GPIB Talker/Listener chip (U202) bidirectional data bus lines.
Test Setup: Use the test setup described in paragraph 4-23. Connect jumper pack W202 in the normal operating
position and set up the signature analyzer as shown below.
Signature Analyzer
Input
Edge
Setting
P201 PIN
Connection
START
STOP
CLOCK
GND
11
12
15
4
Measurements: Use the data probe to take signatures for each circuit at the input/output pins listed below.
Circuit Input/Output Signature
+5 P201-1 7U39
U202-12 60U7
U202-13 183H
GPIB U202-14 060U
Talker/Listener U202-15 0183
U202 U202-16 0060
(Bidirectional Bus) U202-17 0018
U202-18 0000
U202-19 0006
4-24
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