RAD DATA COMMUNICATIONS
FOM-E1/T1 (DC POWER, FC CONNECTORS)
| Card Type | T1/E1 interface converter | 
| Chipset | Unidentified | 
| Wire Type | Fiber optic cable | 
| T1/E1 Transfer Rate | 1.544Mbps/2.048Mbps | 
| T1/E1 Protocol | B8ZS, HDB3 | 
| Frame Type | Unidentified | 
| Data Bus | N/A | 
 
| CONNECTIONS | |||
| Function | Label | Function | Label | 
| Unbalanced T1 signal in via coaxial cable connector | CN1 | T1 fiber optic receive FC connector | CN4 | 
| Unbalanced T1 signal out via coaxial cable connector | CN2 | T1 fiber optic transmit FC connector | CN5 | 
| Balanced T1 signal in/out via DB-15 connector | CN3 | AC power in | CN6 | 
| Note:Either connector CN3 or connectors CN1 and CN2 may be used, but not both. | |||
| USER CONFIGURABLE SETTINGS | |||
| Setting | Label | Position | |
| » | Signal ground connected to chassis ground | JP1 | Pins 1 & 2 closed | 
| Signal ground not connected to chassis ground | JP1 | Pins 2 & 3 closed | |
| » | CN1 shield not connected to chassis ground | SW1 | On | 
| CN1 shield connected to chassis ground | SW1 | Off | |
| » | CN2 shield not connected to chassis ground | SW2 | On | 
| CN2 shield connected to chassis ground | SW2 | Off | |
| » | Device will transmit All Ones Signal when major alarm is detected | SW3 | On | 
| Device will transmit nothing when major alarm is detected | SW3 | Off | |
| ELECTRICAL CABLE TYPE SELECTION | |||||||
| Setting | JP2/A | JP2/B | JP2/C | JP2/D | JP2/E | JP2/F | |
| Unbalanced 75 ohm | Pins 3 & 4 | Pins 3 & 4 | Pins 3 & 4 | Pins 3 & 4 | Pins 3 & 4 | Pins 3 & 4 | |
| Balanced 100 ohm | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | |
| » | Balanced 120 ohm | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | 
| Note:Pins designated are in closed position. | |||||||
| TEST MODE | ||
| Setting | SW4 | |
| » | Normal operation | Position 2 | 
| Local loopback test | Position 1 | |
| Remote loopback test | Position 3 | |
| DIAGNOSTIC LED(S) | |||
| LED | Color | Status | Condition | 
| PWR | Green | On | Power is on | 
| PWR | Green | Off | Power is off | 
| LOC | Yellow | On | Device is in local loopback test mode | 
| LOC | Yellow | Off | Device is not in local loopback test mode | 
| REM | Yellow | On | Device is in remote loopback test mode | 
| REM | Yellow | Off | Device is not in remote loopback test mode | 
| LOW | Red | On | Electrical input signal is below valid signal level | 
| LOW | Red | Off | Electrical input signal is within valid signal levels | 
| AIS1 | Yellow | On | All Ones Signal received on electrical interface | 
| AIS1 | Yellow | Off | All Ones Signal not received on electrical interface | 
| ERR | Red | On | Bit Error Rate of optical interface is 10-6 or worse | 
| ERR | Red | Off | Bit Error Rate of optical interface is better than 10-6 | 
| AIS2 | Yellow | On | All Ones Signal received on fiber optic interface | 
| AIS2 | Yellow | Off | All Ones Signal not received on fiber optic interface |