Mobatime WTD 868-R User manual

© MOBATIME BE-800546.01
INSTRUCTION MANUAL
Wireless Time Distribution
Receiver-Interface WTD 868-R

© MOBATIME 2 / 12 800546.01
Manufacturer’s Certificate
STANDARDS
The WTD 868-R Receiver Interface was developed and produced in accordance with the EU guidelines.
73 / 23 / EWG
89 / 336 / EWG
1999 / 5 / EWG
Notes to the Instruction Manual
1. The information contained in this instruction manual can be changed at any time without prior notice.
The current version is available for downloading under www.mobatime.com.
2. This instruction manual was compiled with the utmost care to provide all the details regarding the use
of this product. However, should you have any queries, or find any errors in the instructions, please
contact us.
3. We will not accept any liability for any damages resulting, directly or indirectly, from the use of this
instruction manual.
4. Please read these instructions carefully and only use the product when all the instructions on installing
and operating have been correctly understood.
5. Installation may only be carried out by qualified personnel.
6. This publication, or any extracts from it, may not be reproduced, stored in a electronic retrieval system,
or in any way transmitted. The copyright with all its rights lies with BUERK MOBATIME GmbH,
D-78026 VS-Schwenningen and MOSER-BAER AG, CH–3454 Sumiswald / Switzerland.

© MOBATIME 3 / 12 800546.01
Contents
1
Introduction..................................................................................................................................................4
1.1 Description ..........................................................................................................................................4
1.2 Product Overview................................................................................................................................4
2 Function Description...................................................................................................................................5
2.1 Dimensions / Installation .....................................................................................................................5
2.2 Connections / Power Supply ...............................................................................................................6
2.3 Control and Display Elements.............................................................................................................8
2.4 Initialisation / Synchronisation............................................................................................................9
3 Technical data............................................................................................................................................10
3.1 Overview ...........................................................................................................................................10

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1 Introduction
1.1 Description
The WTD 868-R is a wireless receiver interface for wireless synchronisation of analogue and
digital slave clocks.
The following models are available.
WTD 868-RM Interface with MOBALine time code output (Art. no. 202841)
WTD 868-RD: Interface with DCF time code output (Art. no. 202842)
The interface is wholly compatible with Norm NF S87-500 of the Association française de
Normalisation (AFNOR). This norm specifies the time code format for wireless time
dissemination among other things. The WTD 868-T (Art. no. 202606) wireless time signal
transmitter is suitable for wireless synchronisation.
Designations and names:
WTD (Wireless Time Distribution), 868 (Frequency band [MHz]), R (Receiver), M (MOBALine
time code output), D (DCF time code output).
Note. Please consult the relevant Operating Instructions where reference is made to other
wireless time distribution devices in our product range.
1.2 Product Overview
Wire less time distribution product range.
Art. No. Designation Description
203051 WTD 868-RS Monitor wireless receiver Interface
202841 WTD 868-RM MOBALine wireless receiver interface
202842 WTD 868-RD DCF wireless receiver interface
202606 WTD 868-T Time signal radio transmitter
701182 WTD Repeater Time signal radio repeater
701143 WTD 868-T MPS Mains power unit for WTD 868-T
701263 SEW 00 Movement for hour, minute & second display, battery
powered (2xAA)
701272 SAW 00 Movement for hour & minute display, battery powered
(2xAA)
701264 SEW 00 MPS Movement for hour, minute & second display, mains
powered (100..240 V 50/60 Hz), IMPS 12 included
701372 IMPS 12 Mains power unit for SEW 00 MPS movement
(110..240 V 50/60 Hz Î12VDC)
701373 IMPS 24 Mains power unit for WTD 868-RM / -RD
(110..240 V 50/60 Hz Î24VDC)

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2 Function Description
2.1 Dimensions / Installation
The WTD 868-R is installed in a black plastic housing 70x40x15.5 mm. The type label
states the type of time code output (MOBALine / DCF).
Wireless Time Distribution WTD 868-R
MOBALINE (202841)
yellow
green
white
brown
+ 5..30 VDC
GND
SIGNAL OUT+
SIGNAL OUT-
MODE / INIT
STATE
POWER IN /
SIGNAL OUT
(mode < 5 s / init > 5 s)
15.5
70
40
500
The interface can be installed directly on the device to be synchronised or up to 0.5 m
displaced from said device using double-sided Velcro. The cable can be shortened or
lengthened (cable 4 x 0.25 mm2).
Ensure best possible wireless reception at the installation site. The following factors
may be decisive here.
•Alignment of the wireless receiver interface (check horizontal / vertical positioning).
•Shielding / interference from the device to be synchronised (ensure adequate
spacing).
•Excessive damping due to walls / metal object (reposition the device to be
synchronised, increase transmitter power or use a signal repeater).
•Too great a distance between wireless transmitter and wireless receiver interface
(increase transmitter power or use a signal repeater).
•Receiver frequency interference by other electric devices and/or equipment that
might interfere (operate same out of receiver range. Use a different frequency
channel or switch the equipment t off if using a wireless system).

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2.2 Connections / Power Supply
The WTD 868-R is connected to its power source via a 4-wire cable (black PVC
sheathing, length 0.5 m, wires 4 x 0.25 mm2). Terminal assignment is given on the type
label of the wireless receiver interface as well (the MOBALine signal output isn't
polarity-dependent).
Colour Connection WTD 868-RM Connection WTD 868-RD
Yellow Power + Power +
Green Power - Power -
White MOBALine output A DCF Out +
Brown MOBALine output B DCF Out -
The wireless receiver interface is to be supplied with power from a DC source (use the
DC output of the device to be synchronised if extant).
Voltage range +5..30 VDC
Power consumption max. 25 mA
The power supply is galvanically isolated from the time signal output.
Examples of connection:
ETC with WTD 868-RD:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 22
2321
24
Com +
GND GND
DCF in -
DCF in +
Bat. +
yellow
white brown green
yellow
green green
alternative connections
WTD 868-RD
GND
DC 57 / 100 / 180, DK 57 Digital clocks with WTD 868-RM:
ETC 12 / 14 / 24
GND
1 2 3 4 5 6 7 8 9
10
11 12 13 14 15
DCF in - DCF in + Com +
green brown white yellow
WTD 868-RD
yellow green
alternative connections
GND DCF in - DCF in + Com +
1 2 3 4 5 6 7 8 9
10 11 12
13 14 15 16 17 18 19 20
green brown white yellow
WTD 868-RD
yellow
Bat + GND
green
alternative connections
ETC 24R
ETC 12/14R
yellow green white brown

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MOBALine
MLU 190(t) S 230
1 2 3 4 5 6 7 8
ON
Option 2
Option 1
MEZ Time zone / Zeitzone
MEZ Time zone / Zeitzone
DCF Antenna / Antenne
Stop Mode Second hand /
Wobbling / Schritt Sekundenzeiger
normal Clock hands/ Zeiger
MEZ -1
MEZ + 1
MS F
Non e stop / o hne Stop
Con t. / Kontin uierlic h
12.00 Position
230 V; 50 -60 Hz; 25 mA
MLU 190 S 230
A/N: 2 00 856.02
P/N: 0 3959665 001
MBL AC
230 V
1 2 3 4 5 6 7 8
ON
Option 2
Option 1
MEZ Time zone / Zeitzone
MEZ Time zone / Zeitzone
DCF Antenna / Antenne
Stop Mode Second hand /
Wobbling / Schritt Sekundenzeiger
normal Clock hands/ Ze iger
MEZ -1
MEZ +1
MSF
No ne stop / o hne Stop
Con t. / Kontinuier lich
12.00 Pos ition
230 V; 50-60 Hz; 25 mA
MLU 190 S 230
A/N: 200 856.02
P/N: 03959665 001
MBL AC
230 V
MLU 190(t) S 230
AC
230V
AC
230V
24VDC 230VAC
IMPS 24
yellow
green
white
brown
Wireless Time Distrib ution WT D 868-R
MOBALINE (202841)
yellow
green
white
brown
+ 5..30 VDC
GND
SIGNAL OUT+
SIGNAL OUT-
MODE / INIT
STATE
POWER IN /
SIGNAL OUT
(mode < 5 s / init > 5 s)
- black + red
Clocks with MLU 190(t) (S) (230) movements and WTD 868-RM:
In this situation the WTD 868-RM interface has to be powered with external mains
power supply IMPS 24. Only seconds movements with 230 VAC mains power supply
(MLU 190(t) S 230) can be synchronized with the WTD 868-RM interface.
Digital clock series 400A with WTD 868-RD:
•Configure your Digital Clock as desired (for setting up the clock for DCF
synchronisation please refer to the additional manual).
•Connect the cable of the radio receiver interface WTD 868-RD to the screw
terminals of your Digital Clock as shown below:
Yellow: Power +
Green & Brown: Ground
White: Antenna Input
•It is important to place the radio receiver interface WTD 868-RD on one of the side
panels of the digital clock. Do not mount the interface on the rear panel. The metal
parts of the clock housing could avoid proper signal reception. For mounting the
WTD 868-RD at the desired position use the double sided adhesive tape which is
part of the delivery.
yellow
white
green + brown

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2.3 Control and Display Elements
The wireless receiver interface has a button for adjusting the operating mode and a
status LED to display same.
The status LED shows the operating mode of the wireless receiver interface for 10
minutes after connection the power source. It then goes out so as not to optically
intrude. (Should the operating mode be displayed for additional 10 minutes then press
the button briefly).
Ascertaining the operating mode using the button.
Button Effect
Depress < 5 seconds Current operating mode is displayed by the
LED for 10 minutes.
Depress > 5 seconds The wireless receiver interface toggles to
its initialisation mode.
Operating modes / Status LED displays
LED Cause / Remedy
Lights permanently Button is depressed.
WTD 868-RD
- Faulty end device wiring (constant current in the
current loop).
Doesn't light up Normal operation after 10 minutes.
Check the power supply if the LED doesn't illuminate when
the button's pressed
If the operating mode isn't shown after briefly depressing
the button:
WTD 868-RM
- No power
- Malfunction / Defect (check wiring)
WTD 868-RD
- No power
- Only blinks if the device to be synchronised is
correctly connected (the Current Loop must be live)
- Minute change (commencement of the DCF signal
output)
- Malfunction / Defect (check wiring)
Rapid regular blinking The wireless receiver interface awaits synchronisation by a
wireless transmitter.
WTD 868-RM:
Two blinks a second
Time code output active, power supply correct.
A MOBALine monitor (IF 484, Art. no. 36452) can be used
to check signal output.
WTD 868-RD:
One blink a second
Time code output active, power supply and end device
wiring correct.

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2.4 Initialisation / Synchronisation
When first used the wireless receiver interface automatically opens in initialisation
mode. In this mode it synchronises using a random wireless time signal transmitter that
is also in initialisation mode. The WTD 868-R saves the address in the time signal
permanently and thereafter synchronises using only signals from a transmitter address
that tallies with that stored. It can thus be obliged to use a specific transmitter address.
Procedure for allocating a new wireless receiver interface a specific transmitter
•Install the WTD 868-R (see chapters 2.1 and 2.2)
•Set the wireless time signal transmitter into initialisation mode.
Caution. Where there is more than one wireless transmitter within reception range
of the interface make sure no other transmitter is in initialisation mode. Which
transmitter will be used cannot otherwise be predicted.
•Wait for the wireless receiver interface to synchronise (see notes, chapters 2.1 and
2.3).
•Once all WTD 868-R have been commissioned as desired the wireless transmitter
must be set to normal operation mode.
If a wireless receiver interface is then later to be assigned a different wireless
transmitter this can be done using the button (see chapter 2.3).

© MOBATIME 10 / 12 800546.01
3 Technical data
3.1 Overview
Wireless receiver module: Average frequency 869.525 MHz
Band 100 kHz
Modulation: FSK, +/-25 kHz
Micro controller: 8-Bit Single Chip RISC Controller
Time code output: WTD 868-RM: MOBALine, local time
5 V..30 V / 50 Hz, 20 mA max.
WTD 868-RD: DCF77, local time
Passive Current Loop, Optocoupler
RPM, max=30 V
Ion=10..15 mA, Ioff<2 mA @ 20 V
Control: Initialisation button
Depress button <5 s: Displays operating mode (status LED)
Depress button >5 s: Interface in initialisation mode
Display: Green status LED
Automatic display of the operating mode for 10 minutes after
power comes on
Permanent illumination: Initialisation button depressed
Blinking (5 Hz) Awaiting synchronisation
Blinking (1 Hz) Time code output active
WTD 868-RM double blinking,
WTD 868-RD single blinking,
Power: 5 V..30 V, 25 mA,
galvanically isolated from the time code output
Antenna: Integrated antenna λ/4: 8.6 cm
Time memory: Time code output for 1 h without synchronisation
Accuracy: Time code output deviation (synchronised) <+/-50 ms
Environmental influences: 0..50 °C, 10-90% relative humidity, non-condensating
Housing: Black plastic, 70 x 40 x 15.5 mm (l x w x h)
Connections: Black connecting cable, 0.5 m, 4 x 0.25 mm2:
Yellow: Power input +
Green: Power input –
White: Time code output +
Brown: Time code output -