IMX-A832I
July 2001, subject to change 5
e) Alarm output (ALARM)1
The alarm output has +24 V DC output voltage by
alarm. The maximum load
from the output is 100 mA.
Connecttheevaluation unit
between positive (terminal
number 33) and neutral
(terminal number 34), see
picture 2. Picture 2: Alarm output
e) Master OUT
Tosynchronizemorethan one 8-channelmultiplexer,
the MASTER OUT output (connection terminal
number 35, see picture 1) gives a signal to the
followingdevice.
Note: Do not connect the MASTER OUT terminal
with the MASTER OUT terminal of the next
device
f) Slave IN
Tosynchronizemorethan one 8-channelmultiplexer,
theSLAVEINinput(connectionterminalnumber36,
see picture 1) receives the signal from the previous
device.
Note: The SLAVE IN terminal should be wired to a
MASTER OUT terminal.
4. Master-Slave operation
The master-slave operation allows synchronized
action of multiple 8 channel devices, including all
Pantronmanualand automatic series.Therefore, the
same channel number is active on each device in
the chain at the certain time (see picture 4). With a
suitable arrangement of sensor pairs, the mutual
influence between the amplifiers can be prevented.
Picture 3: Master-Slave operation
Note: Do not wire the MASTER OUT terminal from
thelast devicewiththe SLAVEIN terminalfrom
the first device.
5. Operation mode terminology
The device has 2 different operation modes:
a) Normal mode
This is the standard mode that is implemented after
switching the supply voltage on, as well as after the
RESET push-button has been pressed.
b) Test mode
This mode is used for the physical alignment of the
sensor heads and to test the set up and wiring. The
multiplexer displays the following information:
• Signal strenght
• Sensor error
• selected basic transmit level
Thesensorheadsareactivatedcyclingoneafterthe
other. The state of each channel will not be shown
and the outputs maintain the state they are in.
6. Functions terminology
The functions of the amplifier can be switched to
different working conditions. The functions are
selectable by DIP-switches behind the front panel.
a) Switching mode1
The switching mode describes the output behavior
oninterruptionoftheinfraredbeam.There are some
differences in the light circuit (light)1and the dark
circuit (dark)1.
Light mode operation: Theoutputswitchestoground
(terminal number 34).
Dark mode operation: The output switches to the
+24 V DC.
b) Basic transmit level (transmit power)1
The basic transmit level is the minimum transmit
power level of an infrared transmitter.
Low 1: This is the standard operating mode of the
automatic level control (ALC). The trans-
mitpowerlevel is always set to the optimal
valuefor constanthighswitchingsensitivity.
Low 2: The multiplexer works like the Low 1 basic
transmit level but the device is less sensi-
tive.
High 1: The transmit power level is always at least
50 % of the maximum power level.
High 2: The transmit power level is always at least
90 % of the maximum power level.
