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16
Chapter 16. Receiver Logic Module
April 1997 Page 16–3
frequency signals, as well as (line) noise and low
level signals.
The specific outputs the Receiver Logic Module
generates are determined by the type of applica-
tion (see “Receiver Logic Output Signals” below),
the conditions of the input signal, and the settings
of the module’s DIP switches.
16.1.2 Upgrade Information
To make upgrading to the new version (CF20-
RXLMN) of the Receiver Logic Module as easy
as possible, we have kept it pin-for-pin compatible
with the previous version (1606C52G01). We
have also kept all the functions of the previous
version. This lets you take advantage of the added
features and flexibility of the new version without
having to reconfigure your system.
Upgrading to the new version of the Receiver
Logic Module is as easy as 1–2–3:
1. Remove your old Receiver Logic Module.
2. Verify that the DIP switch settings on the
new module are set correctly for your
application (see “Setting the DIP Switches
for Your Application”).
3. Insert your new Receiver Logic Module.
16.1.3 Receiver Logic Output Signals
The module provides output signals for the
following types of application:
• 2-Frequency Directional Comparison
(CF30-RXLMN-001)
• 3-Frequency Directional Comparison
(CF30-RXLMN-002)
• 2-Frequency Phase Comparison (CF30-
RXLMN-003)
Functional block diagrams are shown for each of
these applications in Figures 16-6 (2-Frequency
Directional Comparison), 16-7 (3-Frequency
Directional Comparison), and 16-8 (2-Frequency
Phase Comparison). The diagrams include the
logic, inputs, outputs, DIP switch settings, and
external (TCF–10B rear panel) connections for
each application.
2-Frequency Phase Comparison Outputs
All 2-Frequency Phase Comparison output signals
are 1 A switched transistor (solid state). These
four output signals are:
• Trip Positive (Mark)
• Trip Negative (Space)
• Low Level
• Noise
2-Frequency Directional Comparison
Outputs
For 2-Frequency Directional Comparison applica-
tions, the module provides both 1 A switched
transistor (solid state) and electro-mechanical
output signals.
The five 1 A, switched transistor (solid state)
output signals are:
• UB/POTT (Trip 2)
• Guard
• Low Signal 1
• Checkback Trip 1
• Noise
The two electro-mechanical output signals are:
• Trip 1 (DTT)
• Guard 1
3-Frequency Directional Comparison
Outputs
For 3-Frequency Directional Comparison applica-
tions, the module provides both 1 A switched
transistor (solid state) and electro-mechanical
output signals.
The five 1 A switched transistor (solid state)
output signals are:
• UB/POTT (Trip 2)
• Guard 2
• Low Signal 2
• Checkback Trip 2
• Noise