Albalá Ingenieros TTD2000C01, Manual

Albalá Ingenieros | Manual 

TTD2000C01

OUT 1.2,

 OUT 3.4.5:

This LED lights up only when the TTD2000C01 acts as an auxiliary module
for distribution of the reference signals in the bus of a mounting frame.
1PPS. Blue, blinking. Indicates that a one pulse-per-second signal has been
detected on the TTL line of the bus and that this signal is being delivered to
that output.
48kHz. Green. Indicates that a 48kHz signal has been detected on the TTL
line of bus and that the signal is being delivered to that output.
OTHER. Yellow. Indicates that a signal of a different frequency has been
detected on the TTL line of bus and that the signal is being delivered to that
output.
10MHz. Cyan. Indicates that a 10MHz signal has been detected on the TTL
line of bus and that the signal is being delivered to that output.
FAIL. Red. Indicates that the signal selected for delivery to the corresponding
output is not present in the bus.

4.2. Functional description

The TTD2000C01 is a distributor module for analog or digital signals transmitted over
coaxial cabling. The module has been designed to distribute a wide range of signals and
also to increase the number of 1 PPS or 10MHz outputs for GPS2000C01 modules.

All configuration of this device is performed via the control software; therefore in order
to make any changes the mounting frame in which the module is installed must also
have a TL2000 family communications controller installed.

When the module acts as an autonomous distributor, the input signal comes in using
the OUT/5/IN connector and the other four connectors, (OUT1 to OUT4) distribute this
signal. In this mode the IN LED indicates the type of signal detected at the input and the
OUT 1, 2 and OUT 3, 4, 5 LEDs remain off.

In autonomous mode the TTD2000C01 can be configured to operate as a linear amplifier
or as a comparator with TTL output drivers. In the first case the signal delivered to the
outputs is a replica of the signal at the input, whereas in the second case the amplitude
of the input signal is compared to the V

IHmin

 and V

ILmax

 TTL thresholds and a signal with a

guaranteed output of V

OHmin

 y V

OLmax

 is delivered to the outputs.

When the TTD2000C01 is used to increase the number of outputs for GPS2000C01
modules installed in the same mounting frame the five connectors of the TTD2000C01
deliver signals grouped in two sections. One is formed by connectors OUT1 and OUT2
and the other by connectors OUT3, OUT4 and OUT5. The two sections can be configured
independently to delivers 1 PPS or 10MHz signals. The OUT 1, 2 and OUT 3, 4, 5 LEDs
indicate the type of signal being distributed and the IN LED remains off. Other modules
exist that deliver other signal types to the mounting frame bus and these can also be
distributed by the TTD2000C01. For example, the IMB2000C01 provides 48kHz over the
same line that the GPS2000C01 uses for 1 PPS signals.

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