Black Box SHM 128 User manual

SHORTHAUL,
ASYNCHRONOUS / SYNCHRONOUS
4WIREMODEM FOR PRIVATELINES
1.2to128 Kbps
SHM®128
USER'SGUIDE
ORIGINALISSUE:FEBRUARY01, 2000
UPDATE:NOVEMBER25, 2004
P/N: 511004311

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RECOMMANDATIONS
Thelinecircuit aswell astheinterfacecircuitsat thebackof the
product areSELVcircuit.Compliancewith EN60950 isonly
maintainediftheyareconnectedtolineor portonother
equipmentswhichonlycontainSELVcircuit asspecifiedin
EN60950.
DISCONNECTINGTHE PRODUCT
Beforeopeningthehousingservicing,product mustbe
disconnectedfromthemainpowersupply.Toenable this,power
must beinstalledneartheproduct and must beeasilyaccessible.
AETA.COMreservestheright tomodifytheproductsdescribedin
thisguideat anytimeand without prior notice.
DECLARATIONOF CONFORMITY
Themanufacturerdeclaresthat theAEMOD 128 shorthaul
modemconforms tothefollowingstandards:
EN55022 Ed. 94 Electromagnetic radiations
EN55024 Ed. 98 Electromagnetic immunity
EN60950 Ed. 98 Safetyrequirements
CE MARK
TheCEmarkonthisproduct appliestotheEMC directive
89/336/EEC and totheLowVoltageDirective73/23/EEC.

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CONTENTS
I
PRESENTATION
II
INSTALLATION
III
INTERFACES
IV
DISPLAYS AND TESTSFEATURES
V
OPERATIONS
VI
RANGE
VII
MICROSWITCHPOSITIONS SUMMARY

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I–PRESENTATION
Front panel
Rearpanel V28,V35 and 230V~ unpluggable terminalblock
RxTx
Jonction Al. 230V
50Hz
15mA
Rearpanel V11 and 230V~ unpluggable terminalblock
Tx Rx
Jonction
Al.
230V
50Hz
15mA

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Chassisfront panel
Therack-mount chassiscancontain:
up to16 modemcards
up to2powercards

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II -INSTALLATION
1. Powersupply
Connectall secondarysupply wiresbefore connectingthe
mainspower plug.
Standalone versions:
Standalone230Vversion: plugthepowercordtothemainspower
socket.
The“Alim”LEDmustlight on.Ifit doesnot, checktheF1fuseon
theboard(250Vdelayed400mA).
Standalone48Vversion :connect the48Vsupplytothe48V
screwterminals(polaritydoesn't matter).
The“Alim”LEDmustlight on.Ifit doesnot, checktheF1fuseon
theboard(250Vdelayed63mA).

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Rack-mount versions:
Rack-mount 230Vversion:
Plugthe230Vpowercardinslot Aor B of thechassis.
For backup, pluga second 230Vpowercardintheotherslot.
Plugthemainscordin theoutletat thebackof thechassisand in
themainspowersocket.
The“Alim”LEDof thepowercardmustlight on.Ifit doesnot,
checktheF1fuseontheboard(250Vdelayed1A).
The“Alim”LEDof amodemcardmustlight on.Ifit doesnot,
checktheF1fuseontheboard(250Vdelayed400mA).
Rack-mount 48Vversion:
Plugthe48Vpowercardinslot Aor B of thechassis.
For backup, pluga second 48Vpowercardintheotherslot.
Connect the+48Vwireof thepowersupplytothescrewconnector
blocktagged0B and locatedat thebackof thechassis.
Connect the0Vwireof thepowersupplytothescrewconnector
blocktagged–48Vand locatedat thebackof thechassis.
The“Alim”LEDof thepowercardmustlight on.Ifit doesnot,
checktheF1fuseontheboard(250Vdelayed2A).
The“Alim”LEDof amodemcardmustlight on.Ifit doesnot,
checktheF1fuseontheboard(250Vdelayed400mA).

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2. Line wiring:
Warning:Theefficiencyof AEMOD128 isguaranteedonly
with atwo twistedpairscable.
ThetwoTxlinewiresareconnectedtothetwoRxlinewiresof the
otherend.
Screwconnector blockstandalone or chassisversion:
Tx
Thetransmit lineisconnectedto
theterminals:
Thereceivelineisconnecttothe
terminals:
Rx
RJ45 standalone unit:
RJ45 pinouts:
RJ45
receptacle
pinnumber
Description
1Not used
2Not used
3Rx
4Tx
5Tx
6Rx
7Not used
8Not used

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REMARK:
Thewayof pluggingthetwoTxwireshasnoimportance.The
samefor thewayof pluggingthetwoRxwires.
NOTE:Asanoption,a3meterlongcordfittedwith aRJ45 plug
at oneend and a spadelugat theotherend canbedelivered.
3. Terminal connection:
V28 version: connect directlytheterminaltoAEMOD 128 usinga
DB25 female connector .
V35 version: connect theDB25M /M34Fadaptor cord(delivered
with thedevice)tothe'Jonction'connector of AEMOD 128.Then
usea M34 cordtoconnect theterminaltoAEMOD 128.
V11 version: connect theDB25M / DB15Fadaptor cord(delivered
with thedevice)tothe'Jonction'connector of AEMOD 128.Then
usea DB15 M34 cordtoconnect theterminaltoAEMOD 128.
4. Alarmcontact:
A2pinscontact ('Al.')isavailable at therearsideof AEMOD
128.
Thedeviceprovidealoopwhichisopenwhennolinesignalis
detectedbythemodem.

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III -INTERFACES
1. V28 interface
ITU-T:V24 + V28 (RS232)
ISO :2110
Circuit Pin MeaningNameSignal
source
ITU-T
EIA
102 AB7Signalground GND
103 BA2Transmit data TD →
104 BB 3Receivedata RD ←
105 CA4Request tosend RTS →
106 CB 5Cleartosend CTS ←
107 CC 6Data set readyDSR ←
108 CD20 Data terminalreadyDTR →
109 CF8Data carrierdetect DCD ←
113 DA24 Externaltransmit clockExtClk →
114 DB15 Modemtransmit clockTC ←
115 DD 17 ModemreceiveclockRC ←
140 RL21 RemoteloopbackRLB2 →
141 LL 18 LocalloopbackLLB3 →
142 TM25 Test indicator TI ←
→Terminalsignalsource
←Modemsignalsource

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2. V11 interface
ITU-T:V11 (RS422)
ISO :4903
Circuit
Pin MeaningNameSignal
source
G8Signalground
T2
9 Transmit data wire(a) Transmit data wire(b) Ta Tb →
→
R4
11 Receivedata wire(a) Receivedata wire(b) Ra Rb ←
←
C3
10 Controlwire(a) Controlwire(b) Ca Cb →
→
I5
12 Indicator wire(a) Indicator wire(b) Ia Ib ←
←
S6
13
Transmit and receive
clocksignalwire(a)
Transmit and re
ceive
clocksignalwire(b)
Sa
Sb
←
←
X7
14 Ext. Clockwire(a) Ext. Clockwire(b) Xa Xb →
→
→Terminalsignalsource
←Modemsignalsource

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V11 Adaptator
DB25M
DB15F
1
Protectiveground 1
2
Tx(a)T(a) 2
3
Rx(a)R(a) 4
4
RTS(a)C(a) 3
5
CTS(a)
6
DSR(a)
7
GND GND
8
8
DCD(a)I(a) 5
9
Hrec(b)S(b) 13
10
DCD(b)I(b) 12
11
Hext(b)X(b) 14
12
13
14
Tx(b)T(b) 9
15
Hem(a)
16
Rx(b)R(b) 11
17
Hrec(a)S(a) 6
18
19
RTS(b)C(b) 10
20
21
22
23
24
Hext(a)X(a) 7
25

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3. V35 interface
ITU-T:V35
ISO :2593
Circuit
Pin MeaningNameSignal
source
101 Protectiveground
102 BSignalground GND
105 CRequest tosend RTS →
106 DCleartosend CTS ←
107 EData set readyDSR ←
109 FData carrierdetect DCD ←
108 HData terminalreadyDTR →
104 R
T Receivedata wire(a) Receivedata wire(b) RD ←
←
115 V
X Receiveclockwire(a) Receiveclockwire(b) RC ←
←
114 Y
AA Transmit clockwire(a) Transmit clockwire(b) TC ←
←
103 P
S Transmit data wire(a) Transmit data wire(b) TD →
→
113 U
W Ext. transmit clockwire (a)
Ext. transmit clockwire
(b)
ExtClk →
→
140 NRemoteloopbackRLB →
141 LLocalloopbackLLB →
142 NN Test indicator TI ←
→Terminalsignalsource
←Modemsignalsource

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V35 Adaptator
DB25M
M34F
1
Cable screen A
2
Tx(a) P
3
Rx(a) R
4
RTS C
5
CTS D
6
DSR E
7
GND B
8
DCD F
9
Hrec(b) X
10
11
Hext(b) W
12
Hem(b) AA
13
14
Tx(b) S
15
Hem(a) Y
16
Rx(b) T
17
Hrec(a) V
18
Bcl3 L
19
20
DTR H
21
Tbcl2 N
22
23
24
Hext(a) U
25
Test NN

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4. RS530 interface
ISO :2110
Pin MeaningNameSignal
source
7Signalground
2
14 Transmit data Transmit data TDa TDb →
→
3
16 Receivedata Receivedata RDa RDb ←
←
4
19 Request tosend Request tosend RTSa RTSb →
→
5
13 Cleartosend Cleartosend CTSa CTSb ←
←
6
22 Data set ready Data set ready DSR a DSR b ←
←
8
10 Signaldetector Signaldetector SD a SD b ←
←
20
23 Data terminalready Data terminalready DTR a DTR b →
→
15
12 Transmit clock Transmit clock TC a TC b ←
←
17
9 Receiveclock Receiveclock RC a RC b ←
←
24
11 Externalclock Externalclock ExtClka ExtClkb →
→
18 LocalloopbackLLB →
21 RemoteloopbackRLB →
25 Test modeT ←
→Terminalsignalsource
←Modemsignalsource

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IV–DISPLAYS AND TESTSFEATURES
1. leds
Led"Alim"lightsup whenthemodemispoweredon.
Led"106"lightsup whenCTSsignalison.
Led"103/T"lightsup whentransmitteddata is"0".
Led"104/R"lightsup whenreceiveddata is"0".
Led"109/I"lightsup whenlinesignaldetector ison.
Led"142/Test"lightsup whena localor remoteloopback
isinprogress.
2. Loop facility
Complyingwith ITU-TV54, twoloopsarepossible:
A–Analog loop(Loop3)
Controlledbytheswitch Bcl3(or themicro switch S9for the
chassisversion)or bytheCT141 circuit.
terminal
Local Line
Transmitter
Receiver
Locallooptype3
Localmodemisdisconnectedfromtheline.Transmit lineis
loopedtoreceivelineonlocalmodem.Data transmittedbythe
terminalaresent backbylocalmodem.Thisloopbackonlyallows
totest thelocalmodem.

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B – Remotedigitalloop(RDL2)
Controlledbytheswitch Tbcl2(or themicro switch S8for the
chassis)or bytheCT140 circuit.
terminal
Local Line
Remote
loop
back
Rec.
Trans. Rec.
Trans.
Remotedigitallooptype2
Theremotemodemislooped.Data transmittedbylocalterminal,
via thelocalmodem,aresend toand returnedfromtheremote
modem.Thistestcanverifytheintegrityof thelocalmodem,the
communicationlink and theremotemodem.
StrapZonposition2-1inhibitsloopback.Onposition2-3strapZ
allowsCT140 controlledloopback.
StrapZhasnoinfluenceonS8command.

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Thisstrapinonlyaccessible whenthestandalonebox isopened.
Thisstrapmovinginonlypossible whenopeningthebox.
Todoit, justpinchonesideof thefront panel blackframe,and
pull out theframe.(Pinchingmustbedoneonthestrippedzones
of theframeside).
Strap‘Z’location:
StrapZ
31
Warning:
It isnot possible toinitiatea RDL2loopfroma modemactually
usingthereceiveclockasthetransmit clock.
C -Remotedigitalloopinhibition
S8switch (or S10 switch for thechassisversion)makesthe
modemtoignoretheremotedigitallooprequestfromtheremote
modem.
Aposition:loopbackallowed
Bposition:loopbackinhibited

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V-OPERATION
1. Transmit control
Linetransmit signalmaybe:
-controlledbyRTS(S7onpositionA)
-permanent (S7onpositionB)
DTRinterfacesignalmaybeusedor notbythemodemdepending
onstrapY:
-Y1-2:DTR isignored(Factorysetting)
-Y2-3:DTR must beat spacelevel
Strap‘Y’ location:
StrapY
31

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CTS/RTSdelayiscontrolledbyS6micro switch and operating
mode.
S6Operatingmode Delay time
CTS/RTS
BSynchronous4800 bd to38 400 bd Delaytime25ms
ASynchronous4800 bd to38 400 bd Delaytime50ms
BSynchronous64 000 bd to128 000 bd
Delaytime4,5ms
ASynchronous64 000 bd to128 000 bd
Delaytime15ms
BAsynchronousDelaytime5ms
AAsynchronousDelaytime17ms
2. Synchronousmode -Transmit clock setup
A-Internalclock:CT114
InternalclockissuppliedbythemodemonCT114 (TC).
Micro switch S4onpositionB and S5onpositionA.
Data rate(micro switch S1, S2, S3).
B -Externalclock:CT113
Transmit clockissuppliedbyterminalonCT113 (ExtClk).
Micro switch S4onpositionAand S5onpositionA.
Data ratecanrangefrom1,2to128 Kbps.
C -Receiveclock:CT115
Receiveclockisusedbythemodemastransmit clockand applied
onTCpin (CT114).Micro switch S4onpositionAand S5on
positionB.