Fluke 2640A Service Manual page 149

RS43 Null Modem Cable
(DB-9 Female to DB-9 Female)
RS-232
Port
COM1 (DB-9)
NetDAQ 1
Figure 4-5. Instrument and Host Computer Calibration Setup
11
H L
H L
1
Figure 4-6. Universal Input Module Calibration Connections
(DB-25 Female to DB-9 Female)
Host Computer
12 13 14 15 16 17
H L H L H L H L H L H L H L H L H L
H L H L H L H L H L H L
2 3 4 5 6 7
H L H L
CH1 CH11
Performance Testing and Calibration
RS40 Null Modem Cable
COM2 (DB-25)
NetDAQ 2
18 19 20
H L H L H L
8 9 10
4
Calibration
RS-232
Port
4-27