FunkTronic FT635 REL AC User manual

Relay control
FT635 REL AC

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Content
Technical data 2
General features 3
Channel switching 4
Option line monitoring 4
Transmitter control 4
Functions of the LEDs 4
Examples 5
Relay operation according to T11-55 6
Jumper 7
Block Diagram FT635 REL AC 8
Block Diagram DSP 9
Pinout 10
RS232-connecting cable 12
Service program/Adjustment 12
Programming 14
Decoder function 17
Option line monitoring (FT 635 REL ACL) 19
Tone table 20
General safety instructions 21
Factory returning of old equipment 21
Terms and abbreviations 22
Page
Technical Data
Voltage of operation +12V DC +/- 30%
Current demand ca. 100 mA
Fuse 1 A, self-resetting
Weight ca. 525 g
Dimensions W x H x D 104 x 44 x 175 mm
Frequency of pilot tone ex factory 3300 Hz
Pilot tone decoder +/- 0,8 % (+/- 26 Hz)
Response time < 20 ms
Release time < 40 ms
min. pilot tone level at measuring point 75 mV
Notch filter pilot tone suppression > 50 dB
2- resp. 4-wire
Input level 2-wire -10 dBm nominally, 250 mV
Adjustment range 2-wire -41 dBm to -1 dBm, 7 mV to 700 mV
Input level 4-wire -9 dBm nominally, 275 mV
Adjustment range 4-wire -40 dBm to +1 dBm, 8 mV to 850 mV
Input impedance 2-wire Zr or 600 Ohm, 4-wire 600 Ohm
Output level 2-wire -10 dBm, 250 mV (alternatively: -19 dBm, 190 mV)
Pilot tone 2-wire -12 dBm, 200 mV
Output level 4-wire -14 dBm, 150 mV (alternatively: -5 dBm, 450 mV)
Pilot tone 4-wire -16 dBm, 125 mV
Output impedance 2-wire Zr or 600 Ohm
Output impedance 4-wire 600 Ohm
Interface radio device resp. desk top control
Input level ex factory setting + 3 dBm, 1100 mV
Adjustment range - 24 to + 6 dBm, 50 mV to 1550 mv
Input impedance 600 Ohm
Output level ex factory setting - 17 dBm, 100 mV
Adjustment range - 30 to + 8 dBm, 25 mV to 2000mV
Output impedance 600 Ohm

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General features
The FT635 REL AC relay control is used to operate a relay. A connection with a two or four wire cable
is also possible. With that very long distances can be bridged, depending on the cable attenuation.
All versions of the FT635 REL AC
- Relay function radio in to radio out
- 2 or 4-wire connection (selectable by jumper)
- Impedance 600 Ohm or Zr (selectable by jumper) (Zr only for 2-wire)
- Connector radio device --> AF-in/output and PTT
- Pilot tone decoder 3300 Hz or DC-decoder
- Serial interface RS232 to adjust and program
- All levels adjustable with RS232
- All AF-in/outputs galvanically separated (transformer)
- Remote channel switching by 5-tone sequences
- Programmable pilot tone encoder
- DC-encoder
- 8 digital inputs
- 8 digital outputs
Option line monitoring
The connection of the 2-/4-wire is constantly monitored by the option line monitoring.
The FT635 REL AC relay control is available in a black flange aluminum housing.
- black flange aluminum housing

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Channel switching
Remote switching of channels is achieved by transmitting certain 5-tone sequences. The interface
to the two-way radio device is parallel. The channel output can be "binary", "binary-1", "decimal" and
"2xBCD" . The channel output can be inverted if necessary. Remote channel switching is done via
the line-in.
Option line monitoring
In order to configure the operating mode line monitoring a device with this option is needed at both
ends of the line. Line monitoring is only active during idle times.
For this one of the devices has to be configured as master, the other device as slave. The master
device then scans the slave device in certain intervals. If there is no reply or the slave-device doesn´t
receive a scan by the master-device within a certain interval, one of the switching outputs can be
programmed as error indicator.
Transmitter control
The transmitter control is activated as soon the AC-line has received and decoded the pilot tone.
Then the PTT-output is switched by a potential-free relay. The PTT output can also be controlled by
DC- or AF-decoding (register 053/1). The line-input is switched through to the radio even if the relay
is active.In that case line has priority over radio.
Functions of the LEDs
The green LED is always on when the relay is active or the pilot tone has been decoded by the AC-
line or when a DC potential is applied or AF has been decoded, depending on the configuration. The
green LED blinks when there is a decoding,but the switching of the transmitter relay is suppressed.
The yellow LED is on when the pilot tone has been activated or DC has been applied to the line or
the AF has been connected to the line. The yellow LED blinks when the activation of one of the afore-
mentioned functions has been suppressed.
Examples
Depending on the setup of the radio installation the FT635 REL AC is used together with different
other FunkTronic modules. The following questions should be answered when planning:
- Connection of the FT635 REL AC to an operation terminal and a two-way radio
- Remote channel switching necessary
- Line monitoring necessary
- 2- or 4-wire connection, simplex or duplex
- Connected to FT634aC or operating terminal
LED green, transmitter relay on
because
- relay is active
- pilot tone has been decoded or
- DC has been decoded or
- AF has been decoded
(if blinking see description)
LED yellow
- Pilot tone turned on or
- DC applied and
- AF connected to the line
(blinking see description)

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2
LIM AC
LIM AC
2 or 4
FT635 REL AC
with channel switching or
without channel switching
with two Simplex devices
Example 2: Parallel circuit of several operation terminals --> LIM AC has to be equipped with notch
for pilot tone.
On private lines the remote control can be carried out by DC.
In this case the two LIM AC and the notch filters for the pilot tone are needed.
2
2
FT624
FT
635
REL A
C
with channel switching
or without channel swit-
ching
Major 4a or 5a
Major 5a
Major 4a
Example 1: 2- or 4-wire remote control via private lines
AC- or DC- remote control
Receiver/RX
Receiver/RX
Transmitter/TX
Transmitter/TX

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Example 4: Operation terminal Major 6 via 2-wire to the multi-channel radio set (with the option of
line monitoring)
2
Major 6, 4a or 5a
FT634aCL
(with line monitoring)
FT635 REL ACL
(with line monitoring )
with two Simplex devices
Relay operation according to T11-55
When operating the relay according to „T11-55“ the carrier of the transmittting channel is monitored
by an input (I/O0-I/O15) and the starting of the relay is impossible if the channel is active. For this
an I/O has to be programmed as T11-55 squelch input.
Listening in with 4-wire connection
The FT635 REL AC also supports listening in on the transmitted AF on a 4-wire connection.
2 or 4
FT635 REL AC
with or without channel
switching with two Sim-
plex devices
Major 4a, 5a or 6
Example 3: 2- or 4-wire remote control via leased lines
LIM AC (only 2-wire)
FT634aC
Receiver/RX
Receiver/RX
Transmitter?/TX
Transmitter

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Jumper
Different configurations can be adjusted with the internal jumpers. For example you can choose
between 2- or 4-wire connections. The functions of the different jumpers are printed directly onto the
circuit board.
2D = 2-wire
4D = 4-wire
Zr = complex impedance
600 = real impedance 600 Ohm
AC = remote control by AC voltage
DC = remote control by DC voltage
= jumper
Jumper setting normal, 2D, Zr, AC (ex factory)
Jumper setting 2D, 600 Ohm, DC
Jumper setting 2D, Zr, DC Jumper setting 2D, 600 Ohm, AC
Jumper setting 4D, 600 Ohm, DC Jumper setting 4D, 600 Ohm, AC

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Block diagram FT635 REL AC

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Block diagram DSP

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Pinout
Pinout of the FT635 REL AC
8-pole Western jack "RS232"
I/O 12 (in/output) 8
I/O 11 (In/output) 7
I/O 10 (in/output) 6
I/O 09 (in/output) 5
I/O 08 (in/output) 4
GND (in/output) 3
RS232 RxD (input) 2
RS232 TxD (output) 1
LED green, transmitter relay on because
- relay active
- pilot tone decoded or
- DC decoded or
- AF decoded
(if blinking see description)
LED yellow
- pilot tone on or
- DC on and
- AF connected to line
(if blinking see description)
I/O: line, 2D, 4D out 1
free 2
I/O: GND 3
free 4
I/O: line, 2D, 4D in 5
6 OUT: line, 4D out
7 I/O: I/O 13 (Pull-up 5V)
8 I/O: I/O 4 (o.C.)
9 IN: line, 4D in
9-pole Sub-D jack "LINE" and "LINE 1"