Connect Tech Blue Heat/Net Sync User Manual
Pinouts
DB-25 Female Pinouts
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| DB25F |
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| Line Mode |
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| Pin # |
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| Signal Name |
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| V.35 | RS232 |
| X.21 |
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| V.28 in brackets |
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| (V.28) |
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| (V.11) |
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| 14 |
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| TX+ |
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| V.35 [4] | V.11 |
| V.11 | V.11 |
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| 2 |
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| TX- (TX) |
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| V.35 [4] | V.11 | V.28 |
| V.11 | V.11 |
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| 16 |
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| RX+ |
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| V.35 [4] | V.11 [1] |
| V.11 [1] | V.11 [1] |
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| 3 |
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| RX- (RX) |
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| V.35 [4] | V.11 [1] | V.28 |
| V.11 [1] | V.11 [1] |
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| 23 |
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| DTR+ |
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| V.11 |
| V.11 |
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| 20 |
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| DTR- (DTR) |
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| V.28 | V.11 | V.28 |
| V.10 | V.11 |
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| 19 |
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| RTS+ |
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| V.11 |
| V.11 | V.11 |
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| 4 |
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| RTS- (RTS) |
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| V.28 | V.11 | V.28 |
| V.11 | V.11 |
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| 13 |
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| CTS+ |
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| V.11 |
| V.11 | V.11 |
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| 5 |
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| CTS- (CTS) |
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| V.28 | V.11 | V.28 |
| V.11 | V.11 |
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| 21 |
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| DSR+ |
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| V.11 |
| V.11 |
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| 6 |
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| DSR- (DSR) |
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| V.28 | V.11 | V.28 |
| V.10 | V.11 |
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| 10 |
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| DCD/RX_SYNC_IN+ [5] |
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| V.11 |
| V.11 | V.11 |
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| 8 |
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| DCD/RX_SYNC_IN- [5] (DCD) |
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| V.28 | V.11 | V.28 |
| V.11 | V.11 |
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| 11 |
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| TXC+ [2] |
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| V.35 [4] | V.11 [2] |
| V.11 [2] | V.11 [2] |
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| 24 |
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| TXC- [2] | (TXC) |
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| V.35 [4] | V.11 [2] | V.28 |
| V.11 [2] | V.11 [2] |
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| 9 |
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| RXC+ [2] |
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| V.35 [4] | V.11 [2] |
| V.11 [2] | V.11 [2] |
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| 17 |
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| RXC- [2] | (RXC) |
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| V.35 [4] | V.11 [2] | V.28 |
| V.11 [2] | V.11 [2] |
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| 15 |
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| (TXC) |
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| NC | NC | V.28 |
| NC | NC |
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| 12 |
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| RX_SYNC_OUT- [6] |
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| V.28 | NC | V.28 |
| NC | NC |
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| 22 |
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| RI (RI) |
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| V.28 | V.10 | V.28 |
| V.10 |
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| 18 |
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| TX_TRIGGER |
| [7] | [7] | [7] |
| [7] | [7] |
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| 7, 1 |
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| SR |
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| SR | SR | SR |
| SR | SR |
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| [1] | 120 ohm resistor applied between the (+) and |
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| [2] | 120 ohm resistor applied between the (+) and |
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| [3] | This signal can be programmed to be a input or an output. |
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| [4] | V.35 Termination Network is applied between (+) and |
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| [5] | External Sync input used to enable or disable the receiver. This pin is used in external Sync |
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| [6] | mode. A logical low will enable the receiver. |
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| This output indicates that the Receiver has received a RX Sync character. It could also be used |
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| [7] | as a general purpose I/O signal. |
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| See the table titled Auxiliary Connector under TX_TRIGGER for details. |
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NC means DO NOT CONNECT.
Signal Description:
| Mode |
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| Equivalent Standard |
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| Electrical |
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| Typical Voltage |
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V.10 |
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| Single ended |
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| +/- 5VDC |
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V.11 |
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| Differential |
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| 1.5VDC to 4.5VDC |
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V.28 |
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| Single ended |
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V.35 |
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| V.35 |
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| Differential |
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| 550mVDC |
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Table 9: DB-25 Female Pinouts
64 | Revision 0.03 |
