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# RAD DATA COMMUNICATIONS
FOM-T1
Modem Type Data (synchronous/asynchronous)
Maximum Data Rate 2.048Mbps
Data Bus External
Data Modulation Protocol Proprietary
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| DB-15 | CN1 | Receive fiber | RX |
|----------------+----------+---------------------+----------|
| AC power | CN2 | Coaxial connector | OUT |
| | | out | |
|----------------+----------+---------------------+----------|
| Transmit fiber | TX | Coaxial connector | IN |
| | | in | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CHASSIS TO ELECTRICAL GROUND |
|------------------------------------------------------------|
| Setting | JP1 |
|----------------------------+-------------------------------|
| » Connected | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Disconnected | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INPUT |
|------------------------------------------------------------|
| Setting | SW2 |
|-------------------------------+----------------------------|
| Grounded | Off |
|-------------------------------+----------------------------|
| » Floating | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERFACE |
|------------------------------------------------------------|
| Setting | SW4 |
|-------------------------------+----------------------------|
| » 100 Omhs-(DB-15) T1 | Position 1 on |
|-------------------------------+----------------------------|
| » 120 Omhs-(DB-15) E1 | Position 2 on |
|-------------------------------+----------------------------|
| 75 Omhs-(BNC) E1 | Position 3 on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| OPTICAL AIS SIGNAL |
|------------------------------------------------------------|
| Setting | SW5 |
|-------------------------------+----------------------------|
| » Off | Off |
|-------------------------------+----------------------------|
| On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| OUTPUT |
|------------------------------------------------------------|
| Setting | SW3 |
|-------------------------------+----------------------------|
| Grounded | Off |
|-------------------------------+----------------------------|
| » Floating | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| RANGE |
|------------------------------------------------------------|
| Setting | SW1 |
|-------------------------------+----------------------------|
| » Short | Off |
|-------------------------------+----------------------------|
| Long | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|--------+---------+----------+------------------------------|
| L1 | Red | On | Power is on |
|--------+---------+----------+------------------------------|
| L1 | Red | Off | Power is off |
|--------+---------+----------+------------------------------|
| L2 | Red | On | Optical signal below -43dBm |
|--------+---------+----------+------------------------------|
| L2 | Red | Off | All link equipment operating |
+------------------------------------------------------------+