Terminal Port Adapters
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General Information
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![](/download/attachments/96436511/Adapter-RJ45-DB9.png?version=1&modificationDate=1288209662000&api=v2)
Figure 1. An RJ45 to DB9 adapter kit.
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Manufacturer | Model | Serial Settings |
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Gamma | MPC and MPCe Vacuum Pump Controllers | 9600 8N1 |
Varian | V81 Turbo Pump Controller | 9600 8N1 |
MKS | 937B (see table 4b) | 9600 8E1 |
Table 4. Serial cable pinouts for DB9-Male to RJ45.
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RJ45 Signal | RJ45 Socket 8 Position | Adapter Wire Color | DB9 Socket 9 Position | DB9 Signal |
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TxD | 4 | Red | 3 | RxD |
RxD | 5 | Green | 2 | TxD |
SG | 6 | Yellow | 5 | SG |
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DB9P (Male) to RJ45, DCE, No Hardware Flow Control
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Manufacturer | Model | Serial Settings |
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SRS | 830 Lock in Amplifier | 9600 8N2 |
SRS | SR620 Time Interaval Counter | 9600 8N2 |
Table 8. Serial cable pinouts for DB25-Male to RJ45.
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The mapping below is as built in a working SR620 system. It has not been verified that the lines are used, so this may be incorrect. Optional hardware handshaking lines, add to the above:
RJ45 Signal | RJ45 Socket 8 position | Adapter Wire Color | DB25 Socket 25 position | DB25 Signal |
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CTS | 7 | Brown | 5 | CTS |
DTR | 8 | Gray | 20 | DTR |