Electroline Control Unit IV - General Introduction; Carrier Options; Table 1-1: Identification of Carrier Type

Control Unit IV Reference Manual
529-0004 Ver.3 1-1
1. PRODUCT DESCRIPTION
This chapter describes the Control Unit and provides a general overview of its various roles.
There are four main sections in this chapter which cover the following:
1. a general introduction to the Control Unit
2. the Control Unit’s roles in subscriber management and in return path monitoring systems
3. the Control Unit’s specific features for supporting various applications
4. the Control Unit’s physical characteristics
1.1 General introduction
The Control Unit includes standard features such as FSK carrier transmission and billing
system support. This section covers the Control Unit’s carrier options, backward
compatibility and applicable safety certifications. See section 1.3 for a full description of the
Control Unit’s features.
1.1.1 Carrier options
There are two types of Electroline FSK data carriers: dual FSK and single FSK. The data
carrier type depends on the Control Unit’s modulator and demodulator. Control Units
equipped with a dual FSK modulator and demodulator produce and demodulate dual FSK
carriers at a fixed frequency. Control Units equipped with a single FSK modulator and
demodulator produce and demodulate a single FSK carrier, which is frequency-agile within a
given range. Contact your Electroline representative for a list of available frequencies (dual
FSK) or for the frequency ranges available (single FSK). The following table will help you
identify the type of carrier produced by your Control Unit.
Table 1-1: Identification of carrier type
Carrier type Identification
Dual FSK The fixed nominal frequency of the dual FSK
carrier is shown next to the
RF OUT
port on
the unit’s rear panel. Units manufactured
before 2001 have a smaller frequency label.
DUAL FSK
53 MHz
FIXED
FSK 53 MHz
Single FSK The factory-programmed frequency of the
agile single FSK carrier is shown next to the
RF OUT
port on the unit’s rear panel. The
range of the frequency-agile FSK carrier
appears on the same label.
SINGLE FSK
53.525 MHz
AGILE OVER:
46-78 MHz