Location Of Resistor Networks On The Aha-2744W - Adaptec AHA-2740W User Manual

AHA-2740W/2742W/2744W User's Guide
For the AHA-2740W and AHA-2742W, host adapter termination is
determined by which SCSI connectors have SCSI devices connected,
is software selectable only, and is done through your computer's
EISA configuration utility. Refer to Chapter 3, Configuring the Host
Adapter for instructions. The table below describes the possible con-
figurations for host adapter termination.
Devices Connected To Host Adapter
68-pin internal connector only
68-pin external connector only
68-pin internal and 68-pin external connectors
50-pin internal connector only
50-pin and 68-pin internal connectors
50-pin internal and 68-pin external connectors
50-pin and 68-pin internal connectors, and 68-pin
external connector
For the AHA-2744W, host adapter termination is configured by
installing/removing the Resistor Networks (RNs). Figure 2-2 shows
the location of the RNs on the AHA-2744W. The following table
describes the possible RN configurations.
RN3
RN6
RN9
Pin 1*
RN12
* Pin 1 is always on the left side of the resistor
Figure 2-2. Location of Resistor Networks on the AHA-2744W
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AHA-2740W/2742W/2744W User's Guide
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Host Adapter Termination
Low
ON
ON
OFF
ON
OFF
OFF
RN4 RN5 RN1
RN7 RN8
RN10
ECN Date: 8/9/94
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High
ON
ON
OFF
ON
ON
ON
INVALID
RN2
RN11
A
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