Agilent Technologies 6622A Service Manual page 66

Description: This test checks the ROM (U206) and the data bus to the output of the Data Latches (U217) in the system
microcomputer.
Test Setup: Use the test setup described in paragraph 4-23. Connect jumper pack W202 in the NOP and set up the
signature analyzer as shown below.
Signature Analyzer
Input
START
STOP
CLOCK
GND
Measurements: Use the data probe to take signatures for each circuit at the output pins listed below. These signatures
apply to the firmware revsions listed. Refer to Appendix A for previous versions.
Date code -->
Revision #-->
Circuit
+5
ROM U206
Data Bus Lines
System Microcomputer
Data Latches
U217
Table 4-7. GPIB Board S.A. Test No. 2
Edge
Setting
Output
P201-1
U206-11
U206-12
U206-13
U206-15
U206-16
U206-17
U206-18
U206-19
U217-2
U217-5
U217-6
U217-9
U217-12
U217-15
U217-16
U217-19
4-21
P201 PIN
Connection
9
10
14
4
2629 2839
A.00.02 A.00.03
Signatures
0001 0001
AH2C UF2F
13CC 9650
PUCC 4134
C2A3 164A
HU49 3449
PF79 A11F
3856 H930
AHU7 A791
H694 UP17
09HF 4C29
77HF A09C
H950 8C24
6UA5 9A25
U63H 508U
1F2A 6F99
H6UA 53F9