User`s manual

ANCB Description
Description
The ANCB (Advance Network Communication Board) is the
communications electronics for the unit. The ANCB plugs into the PCI
slot located on the power supply assembly. A bracket fastens it to the
chassis. See Figure 2-4 Power Supply/ANCB Assembly.
J12
J4
10Base2
10BaseT
J 10 Port 1
For ADH: Jumpers on
Top 3 Positions
J11 Port 2
For DataNET:Jumpers on
Bottom 3 positions
Config Port
RS232
57.6 KB
J2 not used for ANG-EN
Board
RESET
Operation LEDS
J5
Figure 4-1: ANCB Board
J10 & J11
Connections
Jumpers J10 & J11 select the ANG_EN network interface provided to
connector J4.
J10 connects Port1 on J4 to either the Advance Data Hiway (ADH) or
Advance DataNET Channel A interface.
J11 connects Port2 on J4 to either the Advance Data Hiway (ADH) or
Advance DataNET Channel B interface. J10 & J11 are configured for
Advance Data Hiway (ADH) on the ANG_EN board.
J5 Connector
Connector J5 is the impedance matching jumper for the 10Base2 (BNC)
connector labeled P1 on the ANCB board. The connector is a 2-position
(4-pin) connector. The pins are numbered 1 to 4 in the clockwise
direction. Pin 1 is denoted by a dog-ear that is silk-screened in a
rectangle near J5.
For the Ethernet application P1 is not normally used and the ANCB, J5
connector, Pins 3&4 are shorted with the 2-position switch is in 25-ohm
position.
48 • Troubleshooting 2000590-001