Installation
Connecting External Devices
2-6 Model 49i Primary Standard Instruction Manual Thermo Fisher Scientific
D/O Terminal Board Figure 2-5 shows the recommended method for attaching the cable to the
terminal board using the included tie-down and spacer. Table 2-2 identifies
the connector pins and associated signals.
Figure 2-5. D/O Terminal Board Views
3 Analog2 15 Power_Fail_NO
4 Analog ground 16 TTL_Input1
5 Analog3 17 TTL_Input2
6 Analog ground 18 TTL_Input3
7 Analog4 19 TTL_Input4
8 Analog ground 20 Digital ground
9 Analog5 21 TTL_Input5
10 Analog ground 22 TTL_Input6
11 Analog6 23 TTL_Input7
12 Analog ground 24 Digital ground
Table 2-1. I/O Terminal Board Pin Descriptions, continued
Pin Signal Description Pin Signal Description
Component Side Viewed from Top of Board
Assembled Connector
See Detail “A”
Detail “A”
See Detail “B”
Detail “B”
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