PATTON ELECTRONICS COMPANY
2703
Card Type | E1 CSU/DSU |
Chip Set | Unidentified |
Transfer Rate | 2.048Mbps |
Data Bus | External |
CONNECTIONS | |||
Function | Label | Function | Label |
75 ohm coax line in or out | CN1 | 120V or 230V AC power | CN5 |
120 ohm shielded twisted pair | CN2 | Fuse for 120V: 250V @ 50mA Fuse for 230V: 250V @ 32mA | F1 |
75 ohm coax line in or out | CN3 | Power switch | SW1 |
V.35, V.36, or X.21 port via UD-26 | CN4 | Local analog loopback test switch | SW2 |
Note:The information as to which coax connector is for transmit and which is for receive is unidentified. |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
» | Shield of transmit coax is not grounded | LK1 | Open |
Shield of transmit coax is grounded | LK1 | Closed | |
» | Shield of receive coax is not grounded | LK2 | Open |
Shield of receive coax is grounded | LK2 | Closed | |
» | Clock master mode disabled | LK3 | Open |
Clock master mode enabled | LK3 | Closed | |
» | Shield of twisted pair is not grounded | LK4 | Open |
Shield of twisted pair is grounded | LK4 | Closed | |
» | Auto-detect device connected to line in | LK5 | Closed |
Do not auto-detect device connected to line in | LK5 | Open | |
» | DSU is clock master | S1/1 | On |
DSU is clock slave | S1/1 | Off |
USER CONFIGURABLE SETTINGS (CON’T) | |||
Setting | Label | Position | |
» | Loopback mode is enabled only by front panel switch | S1/4 | Off |
Loopback mode is enabled continually | S1/4 | On | |
» | Transmitted and received data are not inverted | S1/5 | Off |
Transmitted and received data are inverted | S1/5 | On | |
» | Power supply set for 230V operation | SW3 | Off |
Power supply set for 115V operation | SW3 | On | |
Note:Setting LK3 to Open overrides S1/1. When LK3 is closed, the DSU may still be set to Slave mode with S1/1. |
LINE TERMINATION IMPEDANCE | ||
Setting | LK6 | LK7 |
75 ohm | Closed | Closed |
120 ohm | Open | Open |
LINE SPEED | ||
Setting | S1/2 | S1/3 |
256Kbps | On | On |
512Kbps | Off | On |
1.024Mbps | On | Off |
2.048Mbps | Off | Off |
CLOCK SOURCE | ||
Setting | S1/6 | S1/7 |
External clock source | On | On |
Internal clock source | Off | Off |
SERIAL PORT TYPE | |||||||||
Setting | S1/8 | S5/1 | S5/2 | S5/3 | S5/4 | S5/5 | S5/6 | S5/7 | S5/8 |
V.35 | N/A | On | On | On | On | On | On | On | On |
V.36 | On | Off | Off | Off | Off | Off | Off | Off | Off |
X.21 | Off | Off | Off | Off | Off | Off | Off | Off | Off |
SERIAL PORT TYPE (CON’T) | ||||||||
Setting | S6/1 | S6/2 | S6/3 | S6/4 | S6/5 | S6/6 | S6/7 | S6/8 |
V.35 | On | On | On | On | On | On | On | On |
V.36 | Off | Off | Off | Off | Off | Off | Off | Off |
X.21 | Off | Off | Off | Off | Off | Off | Off | Off |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LED1 | Green | On | Power is on |
LED1 | Green | Off | Power is off |
LED2 | Green | On | DSU is receiving valid signal |
LED2 | Green | Off | DSU is not receiving valid signal |
LED3 | Green | On | DSU is operating as master clock source |
LED3 | Green | Off | DSU is operating as slave clock source |
LED4 | Red | On | DSU is in loopback test mode |
LED4 | Red | Off | DSU is not in loopback test mode |