turned on also with JP1 open (TX Slave) and without
SYNC si gnal from the Mas ter TX.
SW1
: se lect one of the four modulation fre quencies
for the TX unit; the same fea ture is found on the RX
heads.
Set TX and RX jumpers at the same po siton for pro per
func tion.
J1
: TX An ten na as sem bly con nec tion
J2
: TX mea su re con nec tor.
Pin 1: re fe ren ce vol ta ge (13,8 VDC)
Pin 2: re fe ren ce GND
Pin 3-8: not used
Pin 9: TX oscil la tor re fe ren ce vol ta ge:
-
0 V troub le on oscil lator
-
9 V nor mal wor king
Pin 10: in ter nal re fe ren ce vol ta ge (9 VDC)
Note:
The vol tage on pins 1-2 is also ap plied to MS2 con-
nec tor for re char ging the bac kup bat te ry.
It is pos sible to connect a LED to pin 9 (po sitive) and
pin 2 (ground) with low cur rent ab sorbtion (ty pical
2mA) to mo nitor the oscil lator; in any case, sin ce it is a
CMOS de vice output, the max cur rent output is 5mA.
MS2
: con nector for the bac kup bat tery; con nect the
12V 2.1A re char geab le bat te ry fol lowing the po la rity
indications marked on the printed circuit; the F1 fuse
(1A) is in se ries with the po sitive of the battery.
The bat te ry is au to ma ti cal ly char ged by the sup plier
inside each head. This battery gi ves the TX an au to-
nomy of over 36 hours in case of mains fai lure.
F1
: Battery protection fuse. See MS2 de scription.
U2
: TO- 220 vol ta ge re gu la tor, pro vi des vol ta ge re fe -
rence (13,8 VDC). TO- 220 me tal case is in sulated
from the me tal case.
Gen eral note
The TX electronic board are avai lable with the optio-
nal TEST function and Stand- By mode: see silk-screen
circuit on MS1.
If the se func tions are active:
TEST
: Ap ply a GND signal (take pin “-“ from MS2) to
activate the test function; the test will be po sitive if the
cor re spon dent RX will ge ne ra te an in tru sion alarm.
The D20 red LED turns on when the test is active.
STBY
: Ap ply a GND signal (take pin “-“ from MS2) to
activate Stand-by mode of the TX; this in hibits MW si -
gnal emission of TX. Do not mo dify the JP2 jumper set -
ting (factory de fault) on the solder side of the PCB.
HE400R Receiver
MS1
: terminal block of RX printed board
VAC0/VAC1
: power sup
ply, connect the 19 VAC
output of the tra sformer.
PT0/PT1
: tam per cir cuit out put N.C., for pro tection
against unaut ho ri zed ope nings, mo ve ments or tam pe -
ring. In nor mal conditions the re is a NC circuit (0 ohm)
voltage free. The ope ning of the contact is de termined
by a mo vement of the RX unit (by AMP1) or af ter a re -
moval of the head cover (change of state of the switch
connected to J3).
ALL0/ALL1
: Alarm circuit out put NC. In nor mal con-
ditios the cir cuit is clo sed (35 ohm vol tage free) whi le
on the op posite it will be open (R=8). The out put is
con nected to a pho to cou pler de vi ce and the re fo re the
maximum cur rent load must be lower than 100mA.
AMP1
: mo vement sensor de vice. See PT0/PT1 de-
scrip tion, con nec tor MS1.
J3
: mi croswitch con nec tor again unaut ho ri zed ope-
nings of the cover of the head. See PT0/PT1 descrip-
tion, con nec tor MS1.
D9
: gre en LED, mo nitors the 19Vac power sup ply pre-
sence. Without the power supply and with the bac kup
battery in stalled, the LED is tur ned off but the device
con ti nues to work nor mal ly.
D8
: gre en LED, mo nitors the RX link to the TX si gnal.
D7
: red LED. The LED turns on when an alarm is de -
tected.
SW1
: se lect one of the four modulation fre quencies
for the RX unit; the same fea ture is found on the TX
heads.
Set TX and RX jumpers at the same po siton for pro per
func tion.
J1
: RX An ten na as sem bly con nec tion
J2
: RX mea su re con nec tor.
Pin 1: re fe ren ce vol ta ge (13,8 VDC)
Pin 2: re fe ren ce GND
Pin 3: 200mV si gnal. By con necting an oscilloscope
(AC), it is pos sible to determine the quality of the si -
gnal re cei ved; af ter the nor ma li za tion pe riod it must
sta bi li ze to 200mVpp ±5%.
Pin 4: not used
Pin 5: threshold value. It in dicates the threshold value
set on the RX, se lectable by PT5 trimmer.
This va lue is in ver sely pro por tio nal to the de tec tion
sensitivity and the va lue must be in the range 0.4-9 V
mea su red with a di gi tal volt me ter.
Pin 6: RX alarm out put re ference vol tage:
-
0 V: not in alarm
-
9 V: in alarm
Pin 7: in ter nal re fe ren ce vol ta ge (5 VDC)
Pin 8: AGC si gnal: barrier alignment voltage re feren-
ce, in versely pro portional to the qua lity of the bar rier
alignment.
For the best alignment, the si gnal
must be in cluded
in the range 2,5-6,5 VDC.
Pin 9/10: not used.
Model HE400 mi cro wa ve barrier
DT01142 - Page 6
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