Cabletron Systems T2015 Installation Manual page 22

Token-ring network adapter
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INSTALLATION
2.7
PREPARING THE T3015 ADAPTER
This section contains instructions for preparing and installing your
T3015 network adapter into your Micro-Channel compatible
computer.
2.7.1 Setting the Clock Source Jumper
The Clock Source Jumper (JP1) adjusts the adapter's clock cycle to
match the PS/2 model that the adapter is to be installed in. Placing
a shunt over pins 1 and 2 set the clock source for PS/2 Model 50
compatibility. Placing the shunt over pins 2 and 3 adjust the clock
source for compatibility with PS/2 Models 70 and 80.
To set the jumper, locate JP-1 as shown in Figure 2-7, below:
JP-1
1
2
3
Figure 2-7. T3015 Clock Source Jumper JP-1
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