CANOGA PERKINS 2240 Fiber Optic Modem - Manual (Page 12)

12
Canoga Perkins
Various configurations of the 2240 provide local and end-to-end modem controls
including those listed in Table 1-A.
Table 1-A.
Control Leads
Available
1.1.1 Functions, LEDs and Switches
The 2240 Modem incorporates a Loopback Control switch, labeled "Loop," located
on the front panel. Use of this switch is outlined in Sections 5 and 6.
Indicator lights are provided for Power On, Receive and Transmit Data activity,
Local and Remote sync, and Loop On. All of these indicators are located on the
front panel of the modem in both standalone and rackmount versions.
An 8-position DIP switch on the front panel is for the control of operating modes
and internal clock rates. Use of this switch is outlined in Section 3.
The electrical interface connection and fiber optic connections are made at the rear
panel of the modem.
The HI / LO optical power switch (refer to Section 2.2.1) is also located at the rear
panel of the modem.
Data / Clock Controls
Send Data Request to Send
Receive Data Clear To Send
Send Timing Data Set Ready
Receive Timing Data Carrier Detect
Terminal Timing Local Test
Remote Test
Sec. Request to Send
Sec. Data Carrier Detect
Data Terminal Ready
Ring Indicator