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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