3 internal control switches, Internal control switches – CANOGA PERKINS 2240 Fiber Optic Modem User Manual
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2240 Fiber Optic Modem User Manual
Chapter 2 Installation and Setup
Setup
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NOTE: The 1310nm LP laser does not have a HI/LO power switch.
2.1.3 Internal Control Switches
An 8-position DIP switch located on the modem board provides access for internal control
options (see Figure 2-1). Switch positions 1 through 6 provide the following options:
•
Carrier Detect (CD) Signal Options (1 and 2)
•
Clocking Options (7 and 8)
External Clock Mode, switch position 7, and the Divide Ratio Table Select, switch position 8, are
described in section 2.1.3.2.
NOTE: The nomenclature used for this switch is “off" equals "open."
Factory switch settings are shown in Figure 2-1.
Figure 2-1 Eight-Position Internal Options DIP Switch
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