3 internal control switches, Internal control switches – CANOGA PERKINS 2240 Fiber Optic Modem User Manual

Page 22

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2240 Fiber Optic Modem User Manual

Chapter 2 Installation and Setup

Setup

22

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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