Alpermann+Velte TC 30 AS-GPS User manual

Installation & Operation Manual
Version: 2.0
July 30, 2002
TC 30 AS-GPS
Analyser and Switcher for two GPS Receivers
ltc
AVTC 30 AS
Alpermann+Velte
unit 1
error 3
switcher
analyser
error 2
error 1 vitc
gps
entermenu unit 2

Installation & Operation Manual TC 30 AS-GPS
Page 1
CONTENTS
CONTENTSCONTENTS
CONTENTS
A1 REVISION HISTORY
A2 COPYRIGHT
A3 WARRANTY
A4 UNPACKING/SHIPPING/REPACKAGING INFORMATION
A5 SAFETY INSTRUCTIONS
A6 CERTIFICATIONS & COMPLIANCES
1 INTRODUCING THE TC 30 AS
TC 30 ASTC 30 AS
TC 30 AS-
--
-GPS
GPSGPS
GPS 8
1.0 OVERVIEW 8
1.0 CONNECTIONS AT THE REAR AND TECHNICAL DATA 9
1.0 APPLICATION DIAGRAM 10
1.0 POWER OFF AND AFTER SWITCHING ON 11
2 “ANALYSER” OPERATING MODE 12
2.0 DESCRIPTION OF ERROR AND STATUS INDICATION 12
2.0 SWITCHING IN CASE OF A FAILURE 13
1.1 MENU: OPERATING AND STATUS DISPLAY 14
1.2 ERROR INDICATION BY RELAY 15
2 “SWITCHER” OPERATING MODE 16
2.1 DESCRIPTION 16

Installation & Operation Manual TC 30 AS-GPS
Page 2
A1
A1A1
A1 Revision History
Revision HistoryRevision History
Revision History
No. Date Subject
2.0 July 30, 2002 Revised document.
New behaviour in case of reference lost of lock regarding
failures and errors.
A2
A2A2
A2 Copyright
CopyrightCopyright
Copyright
Copyright © Alpermann+Velte Electronic Engineering GmbH 2002. All rights reserved. No
part of this publication may be reproduced, translated into another language, stored in a
retrieval system, or transmitted, in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise without the prior written consent of
Alpermann+Velte Electronic Engineering GmbH.
Printed in Germany.
Technical changes are reserved.
All brand and product names mentioned herein are used for identification purposes only,
and are trademarks or registered trademarks of their respective holders.
Information in this publication replaces all previously published information.
Alpermann+Velte Electronic Engineering GmbH assumes no responsibility for errors or
omissions. Neither is any liability assumed for damages resulting from the use of the
information contained herein.
For further information please contact your local dealer or:
Alpermann+Velte
Electronic Engineering GmbH
Otto-Hahn-Str. 42
D-42369 Wuppertal
Phone: ++49 - (0)202 – 244 111 0
Fax: ++49 - (0)202 – 244 111 5
E-Mail: [e-mail]
Internet: http://www.alpermann-velte.com

Installation & Operation Manual TC 30 AS-GPS
Page 3
A3
A3A3
A3 Warranty
WarrantyWarranty
Warranty
Alpermann+Velte warrants that their products will be free from defects in materials and
workmanship for a period of two years from the date of shipment. If this product proves
defective during the warranty period, Alpermann+Velte, at its option, will repair or replace
the defective product without charge, provided this product are returned to
Alpermann+Velte freight prepaid.
In order to obtain service under this warranty, Customer must notify Alpermann+Velte of
the defect before expiration of the warranty period and make suitable arrangements for the
performance of service. Customer shall be responsible for packaging and shipping the
defective product to Alpermann+Velte, please notice the Shipping Information given below.
This warranty shall not apply to any defect, failure or damage caused by abuse, misuse,
improper use, negligence, accident, modification, alteration, or improper or inadequate
maintenance and care.
This warranty is given by Alpermann+Velte with respect to this product in lieu of any other
warranties, express or implied. Alpermann+Velte and its vendors disclaim any implied
warranties of merchantability or fitness for a particular purpose. Alpermann+Velte’s
responsibility to repair or replace defective products is the sole and exclusive remedy
provided to the customer for breach of this warranty. Alpermann+Velte and its vendors will
not be liable for any indirect, special, incidental, or consequential damages irrespective of
whether Alpermann+Velte or the vendor has advance notice of the possibility of such
damages.

Installation & Operation Manual TC 30 AS-GPS
Page 4
A4
A4A4
A4 Unpacking/Shipping/Repackaging Information
Unpacking/Shipping/Repackaging InformationUnpacking/Shipping/Repackaging Information
Unpacking/Shipping/Repackaging Information
This product has been carefully inspected, tested and calibrated before shipment to ensure
years of stable and trouble-free service.
The shipping carton and pads provide protection for the product during transit. Retain the
shipping cartons in case subsequent shipment becomes necessary.
Carefully unpack the product from its transit material and carefully check the product for
signs of damage. In the event that the product has been damaged during transit, contact
the carrier and your Alpermann+Velte dealer.
Please confirm that all items listed on the packing list have been received. Check the items
against your original order to ensure that you have received the correct parts. If any item is
missing, please contact your Alpermann+Velte dealer.
Ensure that all packaging material is removed from the product and its associated
components before installing the unit.
Products returned to Alpermann+Velte for servicing or repair should have a tag attached
showing:
•Name and complete address of the owner and the name of the person that can be
contacted.
•Units serial number and a description of the service required or failure detected.
Products returned should be shipped prepaid in the original packaging material if possible.
If the original packaging is not available or is unfit for use, supply an adequate packaging
which should meet the following criteria:
•Packaging must be able to withstand the product weight.
•Product must be held rigid within the packaging.
•Allow at least two inches of space between the product and the container.
•The corners of the product must be protected.
•Seal the carton with shipping tape or an industrial stapler.
If the product is still within the warranty period, the product will be returned by prepaid
shipment after servicing.

Installation & Operation Manual TC 30 AS-GPS
Page 5
A5
A5A5
A5 Safety Instructions
Safety InstructionsSafety Instructions
Safety Instructions
The general safety information in this part is for both operating and service personnel.
Alpermann+Velte products are only to be used as directed. Specific warnings and cautions
will be found throughout the manual where they apply.
Review the following safety instructions to avoid injury and prevent damage to this product
or any products connected to it.
•Read these instructions.
•Keep these instructions.
•Heed all warnings.
•Follow all instructions.
Safety Terms and Symbols
Terms and Symbols in this manual:
CAUTION: Caution statements identify conditions or practices that could result
in damage to this product or other property.
Terms and Symbols which may be found on the product:
ATTENTION: Refer to the manual.
Observe precautions for handling electrostatic-sensitive devices.
Signal Ground.
Product Damage Precautions
PREVENT OVERHEATING
To prevent product overheating, position the unit only where sufficient air
circulation can be maintained. Good air circulation is essential to prevent
internal heat build-up, do not block any ventilation openings. Do not expose
the unit to direct sun light or any other strong lights. Keep the unit away from
heat sources.
PROVIDE PROPER ENVIRONMENT
Dust, humidity, shocks and strong electromagnetic fields must be avoided. Do
not expose this apparatus to dripping or splashing water. Ensure that no
objects filled with liquid are placed on the apparatus.

Installation & Operation Manual TC 30 AS-GPS
Page 6
OBSERVE EMC REGULATIONS
The EMC regulations are observed only under the following condition: use
high quality shielded cables at data inputs and outputs.
SUSPECTED FAILURES
Whenever it is likely that safe operation is impaired, the apparatus must be
made inoperative and secured against unintended operation. The appropriate
service authority must then be informed. Do not operate with suspected
failures. Servicing is required when the apparatus has been damaged in any
way, such as power-supply is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate normally, or has been dropped.
PREVENTIVE MAINTENANCE: CLEANING
Qualified Service Personnel Only: The apparatus should be cleaned often
enough to prevent dust or dirt from accumulating. Dust accumulating in the
apparatus acts as an insulating blanket, preventing proper cooling, and
possibly causing overheating and component breakdown. Under high humidity
conditions, accumulated dust can also provide an electrical conduction path.
Remove accumulated dust with a soft cloth or small paint brush. Remove
hardened dirt with a soft cloth, dampened in a mild detergent and water
solution. Do not use polish or abrasive cleaners or any other chemical cleaning
agents.
PREVENTIVE MAINTENANCE: VISUAL INSPECTION
Qualified Service Personnel Only: Visually inspect the apparatus for signs of
damage, scorched components, and loose or disconnected pin connectors. If
you discover heat damaged parts, try to determine the cause of the
overheating before replacing the damaged parts; otherwise, the damage may
repeat.
ATTENTION:
Observe precautions for handling electrostatic-sensitive devices. See “Electro
Static Discharge (ESD) Precautions” below for details.

Installation & Operation Manual TC 30 AS-GPS
Page 7
Electro Static Discharge (ESD) Precautions
All semiconductor devices are sensitive to ESD. To prevent any damage or
degradation on components of the product caused by ESD, observe these
precautions when directed to do so (installing, removing sensitive
components):
1. Use a Ground Strap. Wear a grounded anti-static wrist or heel strap to discharge the
static voltage from your body.
2. Use a Safe Work Area. Avoid handling components in areas that have a floor or work
surface covering capable of generating a static charge. Also nothing capable of
generating or holding a static charge should be allowed in the work area.
3. Handle ESD sensitive components carefully. Do not slide components over any surface.
Do not touch exposed connector pins. Pick-up components by the body, never by the
leads.
4. Transport and store sensitive components or assemblies in a static-protected bag or
container.
A6
A6A6
A6 Certifications & Compliances
Certifications & CompliancesCertifications & Compliances
Certifications & Compliances
CE-Declaration:
We,
Alpermann+Velte
Electronic Engineering GmbH
Otto-Hahn-Str. 42
D-42103 Wuppertal
herewith declare under our sole responsibility that the
TC 30 AS-GPS
meets the intent of the following directives, standards and specifications:
89/336/EEC Electromagnetic Compatibility
EN 50081-1 Emissions
•EN 55022
•EN 55103-1
EN 50082-1 Immunity
•EN 55024
•EN 55103-2

Installation & Operation Manual TC 30 AS-GPS
Page 8
1 Introducing the TC
TCTC
TC 30
3030
30 AS
ASAS
AS-
--
-GPS
GPSGPS
GPS
1.1 Overview
TC 30 AS-GPS monitors and analyses the data received from two external time references.
These references mostly are GPS or DCF77 receivers with a built-in clock, which will be
synchronised from the antenna signals. The time references output a 10MHz frequency, a
second’s pulse and a serial data string containing time, date and status information. The
time references will be referred to as unit 1 and unit 2 in this document.
TC 30 AS-GPS consists of:
•Two data inputs. Data = 10MHz (single or double), seconds pulse P_SEC, serial data
for time, date and status. These data are switched to outputs by relays: 10MHz = BNC,
P_SEC and serial data = DSUB9F.
•Two relays to indicate errors: error of unit 1 or unit 2.
•An 8-digit display to display status data. LED’s to indicate status.
TC 30 AS-GPS operates as „analyser“ or as „switcher“.
The main function is to work as “analyser“, i.e. to supervise both data inputs. With this
operating mode, all important data may be displayed at the front display to provide an
optical means of control. The serial data are checked with regard to plausibility. The unit
decides which input will be switched to the output. A failure is defined as a lack of plausible
data for a duration of some seconds or as a lack of the status ‘synchronisation’ during a
period of 24 hours. In the event of a failure, the data source will be switched over (if the
other source is without failures), a visible error indication at the main display and an error
LED will be lighting, the error relay will switch, the error counter will be incremented.
The serial data are also checked for a correct up-counting sequence of seconds. If an error
is detected, another error counter will be incremented. Such errors will not produce a
switch-over to the other source, since such “errors“ may as well occur in the event of leap
seconds, Daylight Saving Time switching, or the change from unlock to lock mode mode.
The serial data as well contain information of lock or unlock. Lock means, that the receiver
has a good quality signal input from the antenna. The unlock state is indicated at the main
display.
In the “switcher“ mode the automatic change-over between the sources is disabled, but
each source may be manually selected. This mode also permits to remove a defect TC 30
AS-GPS unit from the failure-proof system without causing a considerable dropout of the
system as a whole.

Installation & Operation Manual TC 30 AS-GPS
Page 9
1.2 Connections at the rear and technical data
With single 10MHz input/output:
8: COM2
2: COM1
6: NC1
7: NO2
3: NC2
1: NO1
DSUB9FXLR4M
4: 10-30V DC
typ. 5.0W
DC IN
1: GND GPI
BNCDSUB9M DSUB9M DSUB9F
OUTPUT
10MHz
1: P_SEC1: P_SEC 1: P_SEC
2: RxD
5: GND
8: 10MHz
2: RxD
5: GND
8: 10MHz
2: RxD
5: GND
DATA INPUT
Unit 2
DATA INPUT
Unit 1 OUTPUT DATA
With double 10MHz input/output:
8: COM2
2: COM1
6: NC1
7: NO2
3: NC2
1: NO1
DSUB9FXLR4M
4: 10-30V DC
typ. 5.0W
DC IN
1: GND GPI
2x BNCDSUB9M DSUB9M DSUB9F
OUTPUT
2x 10MHz
1: P_SEC1: P_SEC 1: P_SEC
2: RxD
5: GND
6: 10MHz_1
8: 10MHz_2
2: RxD
5: GND
6: 10MHz_1
8: 10MHz_2
2: RxD
5: GND
DATA INPUT
Unit 2
DATA INPUT
Unit 1 OUTPUT DATA
_2
_1
Dimensions: 214 (W) x 43 (H) x 262 (D) mm
Weight: 1.5kg approx.
Operating temperature: 5°C to 40°C
Ambient humidity: 35% to 85%
DATA INPUT RxD: RS232, 2400/7/E/2
Meinberg Standard Protocol
Technical data of the relays at connector GPI:
Switchable power: 5W max.
Switchable current: 0.25A max.
Transportable current: 1A max.
Voltage: 75V max.
Contact resistance: 200mΩmax.

Installation & Operation Manual TC 30 AS-GPS
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1.3 Application diagram
Example of a redundant GPS system:
SPG
primary
10MHz
Genlock
BB
SPG
back-up
10MHz
Genlock
BB Antenna co-ax
100m
GPS167
back-up
1
Data
Out
Antenna co-ax
100m
GPS167
primary
1
Data
Out
1
Data
In
1
Data
In
2 x 10MHz
1
Data Out
AS GPS
Failure GPI
change-over unit
to inputs of
AS-LTC, AS-VITC,
G30TM or similar
1
10MHz
P_SEC
TxD
P_SEC
TxD to
System
Control

Installation & Operation Manual TC 30 AS-GPS
Page 11
1.4 Power off and after switching on
Without power, all data outputs are switched to data input 1. The two failure relays will
close the contacts NO and COM, i.e. failures of the systems are indicated.
After power-on, the display shows status messages in two steps:
e.g..: AS-GPS20 and _ _ _ 1 0 0 _ _:
1st step: “AS-GPS“ indicates the type of unit = TC 30 AS-GPS.
The first two digits (in the above example = “20“) indicate the firmware
revision.
2nd step: Indicates the configuration of the software:
1. digit: without meaning
2. digit: without meaning
3. digit: without meaning
4. digit: options in case of source = unlock
5. digit: GPS_2 data protocol (0..4)
6. digit: GPS_1 data protocol (0..4)
7. digit: without meaning
8. digit: without meaning
During these two steps all LED’s will be lighting for testing purposes.
Inside the unit a jumper defines the operational mode after power-on: position A =
“analyser“, position B = “switcher“. The current mode is indicated by lighting of the
appropriate front LED. Switching between “analyser“ and “switcher“ mode can be made by
keys even during current operation.

Installation & Operation Manual TC 30 AS-GPS
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2 “Analyser” operating mode
2.1 Description of error and status indication
LED analyser is lighting.
LED unit 1 or unit 2 lights to indicate which source is switched to the loop output.
Having the menu switched off the display indicates the following status information:
Digit 8 Digit 7 Digit 6 Digit 5 Digit 4 Digit 3 Digit 2 Digit 1
Digit 1: Current error code of unit 1. The error code is displayed in a hexadecimal
way, where each bit indicates an error:
Bit 0 = 1: Time-out, i.e. no plausible serial data detected for a period of 3.5
seconds.
Bit 1 = 1: No plausible time information of the serial data input. This bit is
set if the check fails three times subsequently.
Bit 2 = 1: The status information of the serial data input indicates a lost of
synchronisation for a period of 24 hours (the clock of the time
reference is in a free-running mode since 24 hours).
Bit 3 = 1: The status information of the serial data input indicates a lost of
synchronisation for a period of 8 hours (the clock of the time
reference is in a free-running mode since 8 hours).
No errors are found if this digit shows a ”-”.
Digit 3: Current error code of unit 2, same way as digit 1.
Digits 5+6: Displays the number of hours (1 ... 99), since the status information of the
serial data input of unit 1 indicates a lost of synchronisation. The reference will
be locked if this digit is blank.
Digits 7+8: Same way as digits 5+6, referenced to unit 2.
LED‘s error 1 and error 2 indicate the presence of an error:
error 1 lights up in case of an error of unit 1, i.e. as soon as digit 1 of the display indicates
an error code. At the same time the corresponding relay closes the contacts NO1-COM1.
error 2 lights up in case of an error of unit 2, i.e. as soon as digit 3 of the display indicates
an error code. At the same time the corresponding relay closes the contacts NO2-COM2.

Installation & Operation Manual TC 30 AS-GPS
Page 13
2.2 Switching in case of a failure
Any error indicated by bit 0, bit 1 or bit 2 of the error code (see previous chapter for
description), defines a failure.
Example:
Error code Kind of error Description
Bit 0 Time-out Source is lost completely or not connected.
Bit 1 No plausible
time Source has a major fault.
Bit 2 Lost of
synchronisation The source could not get into a lock state for a long period of time. The reference time is counting in a free-running
mode. The frequency outputs may have lost their
specifications.
The error indicated by bit 3 is not a failure, this error will be indicated by the error LED, by
the relay and by incrementing an error counter. So a warning is given to the system’s
operator. Before the time elapses to reach error of bit 2 the system has to be checked and
repaired.
In case of a failure of the active source (source which is looped to the output), TC30AS-GPS
acts as follows:
•Switching to the other source occurs if the other source is without errors (error bits 0 ... 3
are not set).
•No switching occurs if for the other source error code bit 0 or bit 1 is indicated.
•Switching to the other source occurs if the error bits 0 and 1 of the other source are not
set, while at the same time error code bit 0 or bit 1 of the active source are set.

Installation & Operation Manual TC 30 AS-GPS
Page 14
2.3 Menu: operating and status display
Using the menu key further data can be switched to the display and some functions may
be executed. With keys ↑and ↓the next “vertical“ line in the menu is reached, with key →
all functions present at this vertical line can be reached. A hyphen ‘-‘ at the right side
indicates that a function can be executed by pressing the enter key. Pressing menu key
again closes the menu.
↑
↑↑
↑↓
↓↓
↓ vertical →
→→
→Description, front display
READ
1 Time of unit 1: hours/minutes/seconds
2 Time of unit 2: hours/minutes/seconds
3 Date of unit 1: day/month/year
4 Date of unit 2: day/month/year
return to READ
ERROR
1 Number of failures of unit 1 (since power-on or since reset), 8-
digits BCD number, 00000000 to 99999999.
2 Number of failures of unit 2, same as 1.
3 Sum of all failures, 1 + 2.
4 reset -: pressing key enter will reset all error counters to zero.
5 Errors (no failures) while checking the serial data string of unit 1:
time discontinuity detected.
6 Errors (no failures) while checking the serial data string of unit 2:
time discontinuity detected.
7 Errors (no failures) while checking the serial data string of unit 1:
the status information indicates a lost of lock for a period of 8
hours.
8 Errors (no failures) while checking the serial data string of unit 2:
the status information indicates a lost of lock for a period of 8
hours.
return to ERROR
DIFF
1 Difference of time between unit 1 and unit 2. If the units are not
equal in the date, the display shows dAtE and no difference can be
calculated. If the units have same date information the difference of
time will be calculated and displayed as hours/minutes/seconds
and tens/hundreds of seconds, with an accuracy of ±20ms. A
decimal point at the right side indicates that the time of unit 2
precedes the time of unit 1.
return to DIFF
STATUS
1 Status information of unit 1:
Digit 8 Digit 7 Digit 6 Digit 5 Digit 4 Digit 3 Digit 2 Digit 1

Installation & Operation Manual TC 30 AS-GPS
Page 15
Digit 4: -= antenna signals can be received,
n= no antenna signals can be received.
Digit 3: -= receiver has locked,
F= receiver clock counts in a free-running mode.
Digit 2: -= no Daylight Saving Time (DST),
S= Daylight Saving Time (DST).
Digit 1: - = no announcement of a DST switching,
A= announcement of a DST switching, one hour before
the switching occurs.
2 Moment of time (hours/minutes/seconds), when at last the receiver
of unit 1 went into lock state. This time counts upward if the receiver
of unit 1 stays in lock mode, otherwise the receiver has lost the lock
mode since the time displayed. Showing only bars “-“: no lock since
power-on of TC30AS-GPS.
3 Date (day/month/year) of the moment, when at last the receiver of
unit 1 went into lock state. Same way as status 2 above.
4 Status information of unit 2. Same way as status 1 above.
5 Moment of time (hours/minutes/seconds), when at last the receiver
of unit 2 went into lock state. Same way as status 2 above.
6 Date (day/month/year) of the moment, when at last the receiver of
unit 2 went into lock state. Same way as status 3 above.
7 Type of the unit and revision of software, same way as the first level
status display after power-on (see chapter “Power off and after
switching on“).
8 Software configuration, same way as the second level status display
after power-on (see chapter “Power off and after switching on“).
return to STATUS
ANALYSER
1 SELECT - : pressing key enter will switch to the “switcher“
operating mode.
return to ANALYSER
2.4 Error indication by relay
This function is available in operating mode “analyser“ only.
The contacts of the two relays are found at D-SUB 9-pin GPI, for pin assignment see
chapter “Connections at the rear ...”. Each relay operates as a throw-over switch, with the
contacts NC (normally closed) and COM closed at normal operation without an error, and
with the contacts NO (normally open) and COM closed in case of an error or a power fail.
An error indication simultaneously takes place with the indication of the LED error 1 or error
2. If the cause of the error is removed, the relay will switch to normal position.
Relay 1 (NC1, COM1, NO1) switches in case of error of unit 1.
Relay 2 (NC2, COM2, NO2) switches in case of error of unit 2.

Installation & Operation Manual TC 30 AS-GPS
Page 16
3 “Switcher” operating mode
3.1 Description
LED switcher is lighting.
LED unit 1 or unit 2 lights to indicate which source is switched to the loop output. The LED’s
error 1 and error 2 are without function.
In the “switcher“ operating mode no automatic switching occurs, no error status will be
detected and indicated, the relays 1...2 are without function.
Digit 8 Digit 7 Digit 6 Digit 5 Digit 4 Digit 3 Digit 2 Digit 1
If the menu has been disabled, the display indicates an active reception of serial data:
Digit 1 for unit 1 data: “-“ = no data reception, “8“ = data reception,
Digit 3 for unit 2 data: “-“ = no data reception, “8“ = data reception.
During normal operating mode the “8“ flashes every second - even simultaneously,
because the data transmission should occur synchronous with the seconds pulse. The
indication of data reception is independent from the plausibility of the data content, i.e. the
“8“ indicates that there are any serial data coming at input RxD.
Pressing the menu key two functions are available:
press key →: Display shows SELECT -. Press enter key to switch to “analyser“
operating mode.
again press key →: Display shows 1--2 - . Press enter key to manually switch over
to the other source.