G.703
E1
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G.703
E1
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Interface Module
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| Connection to DTE | ||
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Standalone Modem
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ASM-MN-214
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LRS-24
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LRS-24 Interface
Module
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Copper Modems
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| Single modem cards: LRSI-F-3 Quad modem cards: LRSI-F-20, LRSI-F-21 |
| Fiber Optic Modems |
| Single modem cards: LRSI-FO-4 (ST, FC), LRSI-FO-8 (SC) |
| Dual modem cards: LRSI-FO-12 balanced (ST, FC),
LRSI-FO-14 balanced (SC) LRSI-FO-21 unbalanced (ST, FC), LRSI-FO-22 unbalanced (SC) |
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Interface Module Configuration
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| The PCB jumpers serve for the interface module configuration. |  |
| Jumper | Function | Possible Settings | Factory Setting |
| JP1 RX CHAS |
Controls connection between the RX BNC shield and the chassis ground | CON - BNC receive shield is connected to the
chassis ground DIS - BNC receive shield is disconnected from the chassis ground |
DIS |
| JP3 TX CHAS |
Controls connection between the TX BNC shield and the chassis ground | CON - BNC transmit shield is connected to the
chassis ground DIS - BNC transmit shield is disconnected from the chassis ground |
DIS |
| JP2, JP4, JP5, JP6 BAL/UBAL |
Select between the IR E1/G703 interface type | BAL - Balanced 120 RJ 45 connection UBAL - Unbalanced 75 BNC connection |
BAL |
| JP7 Clock Mode |
Selects the clock source for the IR-E1/G703 module | INT/RCV - IR-E1/G703 module receives clock from
the modem EXT - IR-E1/G703 module receives clock from the E1 network |
EXT |
Note: Use only default (EXT) setting for all clock modes. |
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Ordering Information
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| Standalone units | IR-E1/SA | ||
| Note: For FOM-40, the ordering option is IR-E1/FOM-40 | |||
| ASM-MN-214, LRS-24 cards | IR-E1/R |
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