Albalá Ingenieros TTD2000C01 User manual

TTD2000C01
DISTRIBUTOR WITH 1 INPUT TO 4 OUTPUTS FOR TTL OR 10 MHz (50 OR 75
OHMS IMPEDANCE) REFERENCE SIGNAL
Version 1.0
Albalá Ingenieros, S.A.
Medea, 4 - 28037 Madrid - Spain
07 June 2017 - © Albalá Ingenieros S.A. - All rights reserved

TTD2000C01

TTD2000C01
DISTRIBUTOR WITH 1 INPUT TO 4 OUTPUTS FOR TTL OR 10 MHz (50 OR 75
OHMS IMPEDANCE) REFERENCE SIGNAL
Version 1.0
1. DESCRIPTION ...................................................................................................................... 5
1.1. The TTD2000C01 ............................................................................................................................ 5
1.2. Features ............................................................................................................................................. 6
1.3. Block diagram .................................................................................................................................. 7
2. SPECIFICATIONS ................................................................................................................. 9
3. INSTALLATION .................................................................................................................. 11
3.1. Initial inspection .......................................................................................................................... 11
3.2. Safety instructions ...................................................................................................................... 11
3.3. Environmental considerations ................................................................................................ 12
3.4. Installing the module in the mounting frame ................................................................... 12
3.5. Interconnection ............................................................................................................................ 13
4. OPERATION ...................................................................................................................... 15
4.1. Front panel description .............................................................................................................. 15
4.2. Functional description ............................................................................................................... 16
4.3. Module remote control and supervision ............................................................................. 18
4.3.1. Details of the TTD2000C01 registers ........................................................................... 19
5. GLOSSARY ........................................................................................................................ 21
6. REGULATIONS .................................................................................................................. 23
7. VERSIONS ......................................................................................................................... 25

TTD2000C01

Albalá Ingenieros | Manual TTD2000C01
1. DESCRIPTION
1.1. The TTD2000C01
The TTD2000C01 is a distributor module for analog or digital signals transmitted over
coaxial cabling. The module can operate autonomously or in tandem with other
modules installed in the same mounting frame.
When operating autonomously, the module acts as a distributor from one input to four
outputs. In this case the user can select whether the module operates as a linear
amplifier or as a comparator with TTL level output drivers.
When operating as a linear amplifier, the wide bandwidth and high dynamic range make
the TTD2000C01 appropriate for distribution of 10MHz reference signals. When
operating as a comparator the module can be used for re-clocking of digital signals such
as 1 PPS or Word clock.
When operating in a mounting frame that contains a GPS2000C01, the TTD2000C01 can
be used to increase the number of 1 PPS or 10MHz outputs using the redundant signals
that the GPS2000C01 delivers to the bus of the mounting frame. In such cases, each
TTD2000C01 installed in the frame provides five outputs that can be: all 1 PPS, all
10MHz or two of one type and three of the other as desired.
The input impedance and output impedances are configurable as 50 or 75Ω.
It is possible to monitor the TTD2000C01 status remotely using a communications
controller module installed in the same mounting frame. In addition, certain controller
modules provide SNMP management and the ability to record events in a file including
date and time information for further analysis.
The TTD2000C01 is a TL2000 terminal line module and can be housed in a two rack unit
(2 RU) UR2000 mounting frame.
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Albalá Ingenieros | Manual TTD2000C01
1.2. Features
• A distributor of analog or digital signals transmitted over coaxial cabling.
•Capable of autonomous operation or together with other modules installed in the same
mounting frame.
•When operating autonomously the device works as a distributor from one input to four
outputs and functions as a linear amplifier or as a comparator with TTL level output
drivers.
•When operating in a mounting frame that contains a GPS2000C01, the TTD2000C01
can be used to increase the number of 1 PPS or 10MHz outputs using the redundant
signals that the GPS2000C01 delivers to the bus of the mounting frame. In such cases,
each TTD2000C01 installed in the frame provides five outputs that can be: all 1 PPS, all
10MHz or two of one type and three of the other as desired.
• Apt for distribution of 10MHz, 1 PPS and Word clock reference signals.
• The input impedance and output impedances are configurable as 50 or 75Ω.
•Module control and supervision can be done remotely when the mounting frame is
equipped with a communications controller module.
• Low power.
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Albalá Ingenieros | Manual TTD2000C01
1.3. Block diagram
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Albalá Ingenieros | Manual TTD2000C01
TTD2000C01
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Albalá Ingenieros | Manual TTD2000C01
2. SPECIFICATIONS
Signal amplifier
Gain 0dB ± 0.5 dB
Dynamic range -1.5 .. +3.5 V
Dynamic range + 13 dBm
3 dB cuttoff frequency:
Lower DC referece level 0dB
at 70 MHz
Upper >50MHz referece level 0dB
at 70 MHz
Input to output delay 10 ns
TTL signal input
Connector BNC
Impedance 50Ω ± 3 %
Number of inputs 1 per section, 2 sections
Threshold levels:
VIH min. 2.0 V
VIL max. 0.8 V
Allowed voltage range - 0.3 .. 5 V
TTL signal output
Connector BNC
Impedance 50Ω ± 2 %
Return loss >30dB up to 10 MHz
Number of outputs 4 per section
Voltage levels with loaded output:
VOL max. 0.5 V
VOH min. 3.0 V
Rise and fall time <20 ns
Skew between outputs <600 ps
Input to output delay 12 ns
Input to output delay <130 ns
General
Power consumption 3.0 W
Operating temperature range 0 .. 50 °C
Approximate weight 140 g
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Albalá Ingenieros | Manual TTD2000C01
TTD2000C01
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Albalá Ingenieros | Manual TTD2000C01
3. INSTALLATION
THE TTD2000C01 MODULE CONTAINS ELECTRONIC DEVICES SENSITIVE TO
ELECTROSTATIC DISCHARGE. Always use antistatic bags clearly identified
with a high degree of shielding for storage and transportation.
3.1. Initial inspection
Verify that the package has been properly handled during transport. After opening the
packaging, check that the TTD2000C01 module is inside.
You must notify your Albalá Ingenieros distributor or dealer of any damage or defects
observed.
Follow the instructions in this manual to install this module in the mounting frame.
3.2. Safety instructions
•This equipment must be connected to a mains outlet with a protective
earth connection. Never use extension cords that do not have protective
earthing connection. The lack of an effective electrical connection between
the ground pin in the mains input connector of the equipment and the
protective earth of the electrical power distribution can cause serious harm.
•All modules of the Albalá Ingenieros TL2000 terminal line can be
hot-plugged or unplugged without suffering any damage or affecting the
processes that are currently taking place in other modules in the same
mounting frame.
•The TTD2000C01 module and the mounting frame should always be
installed, maintained, operated and removed by personnel with sufficient
technical qualifications. The equipment should never be placed in damp
areas, near splashing liquid, or in explosive or corrosive atmospheres.
Neither modules nor mounting frames can be used in applications that
could endanger human life.
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Albalá Ingenieros | Manual TTD2000C01
3.3. Environmental considerations
This symbol indicates that this equipment must be deposited at a collection
point for proper waste treatment once it has reached the end of its useful
life.
3.4. Installing the module in the mounting frame
The following steps should be followed in order to install a TTD2000C01 module in the
mounting frame.
1 - Remove the blank panel covering the front of the empty slot chosen for installing the
TTD2000C01 in the mounting frame.
2 - Insert the TTD2000C01 module into the front of the mounting frame. The edges of
the card slide into two plastic guides inside the mounting frame.
3 - Secure the module to the mounting frame using the two front screws.
After these steps, the module is ready to be connected to other equipment.
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Albalá Ingenieros | Manual TTD2000C01
3.5. Interconnection
The arrangement of the front panel connectors of the TTD2000C01 module is shown in
the following figure.
Front panel of the TTD2000C01
The TTD2000C01 provides five BNC connectors. Four of these (OUT1,OUT2,OUT3 and
OUT4) are always used as outputs. The fifth (OUT5/IN) can be an input or an output
depending upon the module's configuration.
During autonomous operation connector (OUT5/IN) is the input and the other four
connectors (OUT1,OUT2,OUT3 and OUT4) are used as four outputs that distribute the
signal from the input.
During operation as an auxiliary module for increasing the number of 1 PPS or 10MHz
outputs from a GPS2000C01 module the usage of the outputs is selectable. In this mode
the device has two sections: one formed by outputs OUT1 and OUT2, the other formed
by outputs OUT3,OUT4 and OUT5. The type of signal sent from each section is
user-configurable.
Signal connections to the module should be made with 50 or 75Ω coaxial cabling
depending upon the requirements of the installation. The impedance for the input and
outputs should be configured using the control software. The TTD2000C01 comes from
the factory programmed with input and output impedances of 50Ω.
The front panel has not been designed to support mechanical stress. All cabling in the
rack where the mounting frame is located should be properly supported so that the front
panel does not provide mechanical support.
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Albalá Ingenieros | Manual TTD2000C01
TTD2000C01
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Albalá Ingenieros | Manual TTD2000C01
4. OPERATION
This section describes the significance of the front panel indicators of the TTD2000C01
module and their remote control and monitoring ability.
4.1. Front panel description
The appearance of the front panel and the elements it contains are shown in the
following illustration.
Front panel of the TTD2000C01
In addition to the connectors previously described in the Interconnection section the
front panel includes the following indicators and controls:
IN: The LED lights up only when the TTD2000C01 acts as a distributor and
indicates the type of signal detected at the input.
1PPS. Blue, blinking. Indicates that a 1 PPS signal has been detected.
10MHz.Cyan. Indicates that a signal has been detected at the input but the
levels are not TTL compatible. Normally this is a 10MHz reference signal.
48kHz. Green. Indicates that a TTL signal at 48kHz has been detected.
OTHER. Yellow. Indicates that a TTL signal with a frequency other than
48kHz has been detected.
FAIL. Red. Indicates that no signal has been detected at the input.
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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 48kHz 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 10MHz 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 10MHz 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 VIHmin and VILmax TTL thresholds and a signal with a
guaranteed output of VOHmin y VOLmax 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 10MHz 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 48kHz over the
same line that the GPS2000C01 uses for 1 PPS signals.
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Albalá Ingenieros | Manual TTD2000C01
The impedance of the input and the outputs of the module can be set to 50 or 75Ω in
order to adapt to the type of signal being distributed.
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Albalá Ingenieros | Manual TTD2000C01
HUB/SWITCH
TL2000
COMMUNICATIONS
CONTROLLER MODULE
OTHER TL2000
MODULES
Ethernet
Ethernet
Ethernet
Ethernet
REMOTE CONTROL UNIT
TLE2001 PSU2000 PSU2000
TLE2001 PSU2000 PSU2000
UR2000 INTERNAL BUS
UR2000 INTERNAL BUS
Module remote control and supervision
4.3. Module remote control and supervision
The TTD2000C01 can optionally be remotely controlled/supervised.
In order to perform remote configuration and supervision of the module an optional
TL2000 family remote communications controller must be installed in the mounting
frame.
The main function of the communications control module is to interface between a
10/100 Ethernet port and the internal bus of the mounting frame. The following
illustration shows the most common control situations: from a computer or control
panel via Ethernet.
Certain communications control modules provide additional, more advanced functions
such as an SNMP agent, logging of status changes of the modules and a Web interface
for remote control, etc.
Software for simple configuration and supervision with a GUI for multiple modules can
be downloaded from the Albalá Ingenieros website.
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Albalá Ingenieros | Manual TTD2000C01
The following functions of the TTD2000C01 can be performed remotely:
- Supervision of the presence and type of signals being distributed by the TTD2000C01.
-Configuration of the operating mode and impedance of both the input and the
outputs.
4.3.1. Details of the TTD2000C01 registers
The TTD2000C01 module provides control and status registers that can be read and
written by means of specific commands described in the communication control
module user manuals.
The parameter information grouped in the CONTROL or RAM sections is stored in
volatile memory. Any modifications to the parameters will be lost when the module
power supply is disconnected unless the "EEPROM Save" button within the software
has been pressed.
The STATUS section parameters are read-only and cannot be modified.
The parameters that can be controlled and supervised remotely for each version of
the firmware are listed below:
VERSION 1.X
CONTROL
Name add ext msk snmp trap Description
FR_INPUT 0x00 0x01 Y Y Selected input
0=Bus, 1=Front
ONEPPS_12 0x00 0x02 Y Y Allows selecting the signal delivered to outputs 1 & 2
0=10 MHz line, 1=TTL line
ONEPPS_34 0x00 0x04 Y Y Allows selecting the signal delivered to outputs 3, 4 & 5
0=10 MHz line, 1=TTL line
IMPEDANCE 0x00 0x08 Y N Allows selecting the input/output impedance
0=50 ohms, 1=75 ohms
FORCE_TTL_OUT 0x00 0x10 Y N Allows forcing TTL levels at the outputs
0=Disabled, 1=Enabled
FR_FAIL_MSK 0x01 0x01 N N Allows masking front input signal fail
0=Disabled, 1=Enabled
RE_TTL_FAIL_MSK 0x01 0x02 N N Allows masking 1 PPS/48 kHz bus signal fail
0=Disabled, 1=Enabled
RE_10MH_FAIL_MSK 0x01 0x04 N N Allows masking 10 MHz bus signal fail
0=Disabled, 1=Enabled
STATUS
Name add ext msk snmp trap Description
FR_FAIL 0x01 0x01 Y Y Indicates front input signal fail
0=OK,1=Fail
RE_TTL_FAIL 0x01 0x02 Y Y Indicates 1 PPS/48 kHz bus signal fail
0=OK,1=Fail
RE_10MHZ_FAIL 0x01 0x04 Y Y Indicates 10 MHz bus signal fail
0=OK,1=Fail
FR_1PPS_DET 0x02 0x01 N N Indicates 1 PPS signal has been detedted in the front
0=Inactive,1=Active
FR_48KHZ_DET 0x02 0x02 N N Indicates 48 kHz signal has been detedted in the front
0=Inactive,1=Active
FR_LEVEL_DET 0x02 0x04 N N Indicates signal level has been detedted in the front
0=Inactive,1=Active
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Albalá Ingenieros | Manual TTD2000C01
FR_OTHER_DET 0x02 0x08 N N Indicates other frequency TTL signal has been detedted in the front
0=Inactive,1=Active
RE_1PPS_DET 0x02 0x10 N N Indicates 1 PPS signal has been detedted in the rear bus
0=Inactive,1=Active
RE_48KHZ_DET 0x02 0x20 N N Indicates 48 kHz signal has been detedted in the bus
0=Inactive,1=Active
RE_OTHER_DET 0x02 0x40 N N Indicates other frequency TTL signal has been detedted in the bus
0=Inactive,1=Active
RE_10MHZ_DET 0x02 0x80 N N Indicates 10 MHz signal has been detedted in the rear bus
0=Inactive,1=Active
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