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© Siqura 2017
Version 021403-2f
ADS1200 (MW10)
ADS 1200
Audio, data and contact closure multiplexers for fiber-optic links
USER MANUAL
1. General description
ADS 1200 systems offer combined full duplex
transmission of data, audio and contact closure
signals, all independent, over one or two multimode or
single-mode optical fibers (TRA/TRB or TRX
respectively, see figures 1a, 1b). For technical
specifications, consult section 5.
Two 4-wire audio channels and two contact closure
channels are available on the topmost pair of modular
connectors (port 1 and port 2). The data section
comprises two RS-485/RS-422 (Manchester and
biphase compatible) and two RS-232 channels, on the
two lower modular connectors.
Internal dip switches control the configuration (2/4
wiring and type; default is 4-wire RS-485) of the RS4xx interfaces. If necessary, the RS-485 interfaces can
be adapted to use biasing; by default, the data
interfaces are transparent. By removing a jumper and
output rewiring, port D1 can be used for digital
current loop. Audio input impedance is jumper
selectable. The contact closure outputs are potentialfree and open on synchronisation failure.
LEDs indicate power and local as well as remote sync
status (see section 2), and also monitor data I/O.
The 7TE modules will slot into the backplanes of
TKH Security’s MC 10 or MC 11 power supply
cabinets. Stand-alone models (/SA option, see
supplementary manual) needs an external 12 Vdc
power supply.
2. Connectors and indicators
Indication
Meaning
o
(ST or FC connector)
Optical input (two-fiber units)
o
(ST or FC connector)
Optical output (two-fiber units)
o
(ST or FC connector)
Optical input/output
(single-fiber units)
Modular sockets:
A1/CC1
audio1, contact closure 1
A2/CC2
audio2, contact closure 2
D1/D2 (D1: see text)
RS-485 (422), RS-232
D3/D4
RS-485 (422), RS-232
System status LEDs:
*SYNC
(red)
No sync from optical in,
or no internal sync
(orange)
No sync @ remote optical in
(green)
All sync OK
*DC
(green)
DC power good
Data status LEDs:
*D1, *D3
red/green
RS-485 input to D1,3 = 1/0
off
high-Z
*D2, *D4
green/off
RS-232 input to D2,4 =1/0
Table 1. Connectors and indications on the ADS 1200 front
panel (the modular sockets take RJ-45 plugs)
3. Configuration and installation
3a) Configuration
Interface selection and configuration are performed
using switches and jumpers on the circuit boards of
the ADS 1200 units. To access these elements, each
unit must be opened by taking out the two front
panel Phillips head screws indicated in figure 1 and
partially sliding out the circuit board (shown in
figure 2).
An ADS 1200 data board has two 8-fold (S1, S2)
and one 4-fold (S3) dip switch blocks. The first
switch of each block and the ON positions are also
indicated in figure 2.
The jumper-pin groups A and B control audio input
impedance of A1 and A2, respectively; jumper C
regulates the current loop impedance of one of the
RS-485 data outputs (see below).
Data interface selection: the 4 dip switches in bank
S3 determine the RS-4xx interface type available
on ports D1 and D3 as per table 2.
Figure 1. ADS front panels: TRA (left, similar to
TRB, one-fiber), and TRX (right, two-fibers)
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Interface
type
port D1
port D3
S3-1
S3-2
S3-3
S3-4
RS-485 2-w.
0 0 0
0
RS-485 4-w.
0 1 0
1
RS-422
1 0 1
0
Table 2. Choosing RS-485 interface types
using dip switch bank S3
Two-wire RS-485 mode uses the input terminals for
I/O. In older ADS/VAD units, for two-wire mode the
+ in and + out needed to be combined, as well as - in
and - out; old and new units can be used together with
the old-style cable layout.
Current loop output: The RS-485 output impedance
of port D1 can be made suitable for digital 20 mA
current loop ('TTY') applications by pulling a 2-pin
jumper (C2-3) from the board, thus inserting a resistor
into the non-inverting data line. The jumper may be
put on pins C1-2 to save it. Current loop I/O should
use only non-inverting lines and signal ground (see
figure 3); the interface type should be set to RS-485
(4-w). Input signal voltage on A-GND (IN+-GND)
should be at least 4V.
RS-485 line biasing: In most cases, the RS-485 data
interface works with the default settings. If, however,
data line biasing is called for by other equipment
connected to the ADS 1200, biasing impedances may
need to be applied and dwell times set. With the other
dip switches configured for RS-485 mode, the
eightfold switch banks S1 (for interface D1) and S2
(for interface D3) on the ADS 1200 circuit boards
(figure 2) control attachment of two bias impedance
resistors to both input and inverting input (table 3
below).
Switch
bank S1 for D1
bank S2 for D3
Function (RS-485 mode set)
1-3
dwell time select, see table 4
4 ON
inverting input tied to +5V over 390
5 ON
inverting input tied to +5V over 10 k
6 ON
line termination 120 (default = off)
7 ON
input tied to GND over 10 k
8 ON
input tied to GND over 390
Table 3. Choosing bias resistances, dwell times and line
termination for interfaces D1 and D3
Note that the 'soft zero' biasing adaptation method
used ties the inverting ('negative') input to the
higher voltage, while the biasing resistor of the
normal input is tied to signal ground. This provides
a well-defined bus state when no driver is active.
The first three dip switches of the banks S1 and S2
on the circuit boards (figure 3) are used to
configure the tristate-sensing/dwell timing of
interface D1 and D3, respectively, if biasing of
RS-485 lines is used, to help indicate the
conclusion of transmission (table 3). Dwell time is
approximately 10*bit length or slightly longer.
Setting
no.
Switch
bank S1 for D1
bank S2 for D3
Dwell
time
(±7%)
Data
rate
(bit/s)
1 2 3
0
OFF
OFF
OFF * 0-max
1
OFF
OFF
ON
**
0-max
2
OFF
ON
OFF
0.17 ms
64000
3
OFF
ON
ON
0.34 ms
38400
4
ON
OFF
OFF
0.67 ms
19200
5
ON
OFF
ON
1.35 ms
9600
6
ON
ON
OFF
2.68 ms
4800
7
ON
ON
ON
5.38 ms
2400
*) default, hardware tri-state detect (1V differential sense,
not to be used together with line-biasing)
**) logic high in the data directly drives the output enable
(i.e. no delay). This setting is especially suitable for
very low data rates.
Table 4. Dip switch settings for unbiased and biased
RS-485 interfacing. Settings 1-7 all need bias resistors
to define zero.
Depending on the actual data rate, switches 1-3 of
block S1 and S2 should then be set as per table 4
(read the notes below). Default is all three switches
off, i.e. hardware tristate sensing.
Notes on dwell times:
- When in doubt about which of two dwell times to
select, use the longer of the two.
- Settings 1-7 only work if the lines are biased to a
‘soft zero’.
- The serial receiver dwell timing circuitry (re)starts
a timer on the rising edges of input data from the
copper side, at the same time sending an output
Figure 3. Current loop connections
U603
11
ON
S1
S2 S3
1
2
3
1
2
3
1
2
3
A
B
C
ADS TRX 650 2033 3
WWJJ
1
Figure 2. ADS TRA/B printed circuit board; details left out
for clarity. Take care not to damage the optical fiber
floating above the board.
GND
B (IN-)
A (IN+)
GND
B (OUT-)
A (OUT+)
220 ohm,
internal
jumper removed
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enable signal to the serial data transmitter on the other
side of the optical link. When the timer is allowed to
run out (no more rising edges, meaning no more data),
this output will get no enable signals anymore and will
go into tristate, freeing up its line.
- Different dwell times may be used within the system.
Mixing hardware-tristate-detect on one side and dwelltime on the other side is also feasible.
- The setting of tristate/dwell time in a unit does affect
the data fed into that unit, i.e. the way data is output at
the remote unit.
RS-485 line termination: Line termination impedance
of interfaces D1 and D3 may be set to low (120 )
using dip switch 6 of bank S1 and S2, respectively
(table 3). Default is high impedance.
Audio port impedance: Audio input impedance in the
ADS 1200 can be set by moving jumpers A (for audio
interface A1) and/or B (for interface A2) on the upper
circuit board (fig. 2). A jumper on pins 1-2 selects
high impedance for that port (default); shorting pins 2
and 3 lowers the audio input impedance to 600 Ohms.
3b) Installation
Provide the units with power and connect appropriate
cabling (twisted pair for long electrical links).
Through-connecting the signal ground lines is
recommended. If SYNC problems occur after
powering up, check the optical link first.
4. Connector pin assignments
The electrical port pin assignments (table 5) are
such that similar ports of different units may be
connected back to back with reversed cable
(RS-232 interfaces excepted). See figure 5 for the
pin numbering convention used.
Pin
Port 1 (2)
Pin
Port 3 (4)
1
Audio in +
1 RS-485/422 in + **
2
Audio in -
2 RS-485/422 in - **
3
GND 3
RS-232 in
4
CC1out b
4 RS-232 out
5
CC1in (ref. to GND)
5 GND
6
CC1out a
6 GND
7
Audio out -
7 RS-485/422 out -
8
Audio out +
8 RS-485/422 out +
Table 5. Electrical port pin assignments
** see note Figure 5
1
AUDIO1 IN +
AUDIO1 IN -
GND
CC1 OUT B
CC1 IN
(ref. GND)
CC1 OUT A
AUDIO1 OUT -
AUDIO1 OUT +
8
RS-485/422-1 IN + **
RS-485/422-1 IN - **
RS-232-1 IN
RS-232-1 OUT
GND
GND
RS-485/422-1 OUT -
RS-485/422-1 OUT +
1
8
Figure 5.
Socket pin assignments. The second port (A2/CC2) is
similar in layout to port A1/CC1/ while the downmost
port (D3/D4) is similar to the third (D1/D2).
Input connector pins marked ** also work as outputs in
2-wire mode (see text).
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5. Technical specifications
ADS type >
1200 TRX/
1210 TRA-TRB
1240 TRX/
1250 TRA-TRB
Optical
Wavelength(s)
850/850-1310
1310/1310-1550
nm Fiber
MM (2x/1x)
SM (2x/1x)
Link budget
201) / 201) at
850 nm
22 / 25 at 1310
nm
dB
Link length
6 / 6
55 / 55
km
Output power
>-151) / >-151)
>-7 / >-7
dBm
Input sensitivity
-35 / -35
-32 / -32
dBm
Audio
Channels
1 at port 1, 1 at port 2 (both full duplex)
Bandwidth
40 to 15k
Hz
Sampling rate
16-bit
I/O level
0 (+6 max)
dBV SNR
>62
dBA
THD
<1 (at nom. level)
%
Input imped.
<50 kor600 balanced
Output imped.
<50 balanced
Contact closure
Channels
1 at port 1, 1 at port 2 (both full duplex)
Activation at
<0.75 (<1.5 k to ground)
V Input
+5 V pull-up, 10 k
Output
NO, fail-safe, potential-free
Output switch
1 A @ 30 Vdc
Data (port 3; port 4)
Channels per
port
RS-232; RS-485
2)
(2W, 4W),
RS-422 or 20 mA digital CL)
Data format
Asynchronous, serial
Interf. support
C. loop, TTY, TTL, Manch., Bi-ph.
Data rate4)
DC to 64
kbit/s
Sample rate4)
512 ksamples/s
Management
Front panel
LEDS
see text
SNM
management
variables
Voltage, module temp., alarm
status, configuration et al
Environmental and Safety
Operating temp.
-40 to +74
o
C
Humidity (max.)
<95 (no condensation)
%
Electrical safety
AL / IEC / EN 60950-1
UL recognition file
E242498
Laser safety
IEC 60825-1, IEC 60825-2
EMC immunity
EN 55024, EN 50130-4,
EN 61000-6-2
EMC emission
EN 55022 (Class B)
FCC 47 CFR 15 (Class B)
Powering
Power cons.
4
W Power voltages
11-15 (/SA)
Vdc
Mechanical
Opt. connectors
ST (MM)
3)
, FC (SM) 3)
Data, audio,
CC connectors
for RJ-45 plug (4x)
Dimensions
190x128x35 (7TE)
mm
Weight (appr.)
450
g
1)
For 50/125 m fiber, subtract 4 dB
2)
Manchester/biphase compatible
3)
On one-fiber models, other connectors may be fitted on request
4)
Per channel
Table 6. ADS 1200 series, technical specifications
6. Safety, EMC, ESD
General
The safety information contained in this section, and on
other pages of this manual, must be observed whenever this
unit is operated, serviced, or repaired. Failure to comply with
any precaution, warning, or instruction noted in the manual
is in violation of the standards of design, manufacture, and
intended use of the unit.
Installation, adjustment, maintenance and repair of this
equipment are to be performed by trained personnel aware of
the hazards involved. For correct and safe use of the
equipment and in order to keep the equipment in a safe
condition, it is essential that both operating and servicing
personnel follow standard safety procedures in addition to the
safety precautions and warnings specified in this manual, and
that this unit be installed in locations accessible to trained
service personnel only.
Siqura assumes no liability for the customer’s failure to
comply with any of these safety requirements.
UL/IEC/EN 60950-1: General safety requirements
The equipment described in this manual has been
designed and tested according to the UL/IEC/EN 60950-1
safety requirements.
If there is any doubt regarding the safety of the equipment, do
not put it into operation. This might be the case when the
equipment shows physical damage or is stressed beyond
tolerable limits (e.g. during storage and transportation).
Before opening the equipment, disconnect it from all power
sources. The equipment must be powered by a SELV*) power
supply.
When this unit is operated in extremely elevated temperature
conditions, it is possible for internal and external metal
surfaces to become extremely hot.
Optical safety
This optical equipment contains Class 1M lasers or LEDs
and has been designed and tested to meet IEC 608251:1993+A1+A2 and IEC 60825-2:2004 safety class 1M
requirements.
Optical equipment presents potential hazards to testing and
servicing personnel owing to high levels of optical radiation.
When using magnifying optical instruments, avoid looking
directly into the output of an operating transmitter or into the
end of a fiber connected to an operating transmitter, or there
will be a risk of permanent eye damage. Precautions should
be taken to prevent exposure to optical radiation when the
unit is removed from its enclosure or when the fiber is
disconnected from the unit. The optical radiation is invisible
to the eye.
Use of controls or adjustments or procedures other than
those specified herein may result in hazardous radiation
exposure.
The installer is responsible for ensuring that the label
depicted below (background: yellow; border and text: black)
is present in the restricted locations where this equipment is
installed.
The locations of all optical connections are listed in the
Indications and Connectors section of this manual.
Optical outputs and wavelengths are listed in the Technical
Specifications section of this manual.
Hazard Level 1M
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EMC
Warning: Operation of this equipment in a residential
environment could cause radio interference.
This device has been tested and found to meet the CE
regulations relating to EMC and complies with the limits for
a Class A device, pursuant to Part 15 of the FCC rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) This device
must accept any interference received, including interference that
may cause undesired operation. These limits are designed to
provide reasonable protection against interference to radio
communications in any installation. The equipment generates,
uses, and can radiate radio frequency energy; improper use or
special circumstances may cause interference to other equipment
or a performance decrease due to interference radiated by other
equipment. In such cases, the user will have to take appropriate
measures to reduce such interactions between this and other
equipment.
Note that the warning above does not apply to TKH Security
products which comply with the limits for a Class B device. For
product-specific details, refer to the EU Declaration of
Conformity.
Any interruption of the shielding inside or outside the equipment
could make the equipment more prone to fail EMC requirements.
To ensure EMC compliance of the equipment, use shielded
cables for all signal cables including Ethernet, such as CAT5E
SF/UTP or better, as defined in ISO IEC 11801. For power
cables, unshielded three wire cable (2p + PE) is acceptable
Ensure that all electrically connected components are carefully
earthed and protected against surges (high voltage transients
caused by switching or lightning).
ESD
Electrostatic discharge (ESD) can damage or destroy
electronic components. Proper precautions should be
taken against ESD when opening the equipment.
*)
SELV: conforming to IEC 60950-1, <60 Vdc output, output
voltage galvanically isolated from mains. All power supplies or
power supply cabinets available from TKH Security comply with
these SELV requirements.
7. Product disposal
Recycling
The unit contains valuable materials which
qualify for recycling. In the interest of
protecting the natural environment, properly
recycling the unit at the end of its service life is
imperative.
8. EU Declaration of Conformity
The EU Declaration of Conformity for this product is
available at http://www.tkhsecurity.com/support-files.
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