CPI TR Series User manual

1
TR Series
Tone Remotes
Rev.C
Instruction Manual
TR10 TR20
TR30 TR40

2
CONTENTS
Topic .....................................................Page #
Specifications .....................................................2
GeneralDescription ............................................3
Installation ...........................................................3
Jumpersettings ................................................... 4
Dipswitchsettings...............................................4
Circuit Analysis ................................................... 5
PartsList .............................................................5, 6, 7
ControlPanel PCB View......................................8
Control Panel PCB Schematic............................. 9
Main PCB View ...................................................10
Main PCB Schematic ..........................................11,12,13,14
ExternalAdjustments ...........................................15
Warranty............................................................. 16
SPECIFICATIONS Subject to change without notice.
PowerRequirements 120 VAC, 60 Hz for wall pack (provided) operation
12 VDC to 16 VDC @ 600 mA maximum. Fused on circuit board.
Dimensions 9" x 4" x 7" inches
Weight TR10 - 5 lbs, TR20 - 5 lbs, TR30 - 5 lbs, TR40 - 5 lbs.
Audio Output to Speaker 2 Watts at 3% THD into 8 ohms, using supplied wall pack or 12 VDC.
HandsetEarpieceLevel VolumeControlAdjustable.
FrequencyResponse +/- 3dB from 300 to 3000 Hz, except at notch freq. 1000 Hz reference.
Hum and Noise 50dBbelowoperatinglevels
Notch Filter 2175 Hz down 50 dB from 1000 Hz reference level.
Compression Less than 3 dB increase in output with 30 dB increase in input beyond
threshold. Threshold is adjustable from -20 dBm to +10 dBm.
LineImpedance 600 ohms or 5000 ohms, dip switch selectable.
Line Output Level Factory set at 0 dBm. Adjustable to +10 dBm maximum.
Control Tone Frequencies Security Tone: 2175 Hz +/- 0.01% @ +10 dBm for 140 mS.
FunctionTone: F1 1950 Hz +/- 0.01% @ 0 dBm for 40 mS.
F2 1850 Hz +/- 0.01% @ 0 dBm for 40 mS.
MonitorTone: 2050 Hz +/- 0.01% @ 0 dBm for 40 mS.
HoldTone: 2175 Hz +/- 0.01% @ -20 dBm for duration of PTT.
OperatingModes Standard:Twowiresimplex
Optional: Two wire duplex, four wire simplex and four wire duplex.

3
General Description
TheTRseries toneremotesare designed toprovideremote control ofaconventional ortrunkedtwoway radio
base station or repeater via a leased wire line, in-house twisted pair or RF link.
TheTRseriesisavailableinfourdifferent housing configurations.They are: theTR10telephone style unitwith
handset,theTR20desktopconsolewithdeskmicrophone,theTR30desktopconsolewithbuiltinelectretcondenser
microphoneand the TR40 desktop consolewith gooseneck microphone.
Standard features on all TR models include front panel PTT switch, LED transmit indicator, monitor function,
intercomfunction,twowattamplifiedspeakerwithvolumecontrol.
TheTR10,20,30and40maybewallmountedbyorderingthe-WMoption. WhenwallmountingtheTR20please
note, no provisions are made for mounting the desk microphone.
TRseries unitsare normallypowered bythe suppliedwall plug-intransformer. Themay alsobe poweredfrom
a 12 volt DC source by removing the wall pack and making the appropriate DC connections to TB1.
Installation
TheTRseriestoneremoteswillworkwithanyremotesystemusingtheEIAstandardtonecontrolformat.They
are designed with protection against both power and telephone line surges. This protection circuitry requires a
properlygroundedACoutletbeusedtopowerthewallpack.IftheremoteistobepowereddirectlyfromDC,awell
grounded 12 to 16 volt DC supply is required.
Phone lines - The TR series is designed to work with a good quality leased voice grade pair (phone line) or in
house twisted pair wiring.
Paralleloperation-Whenseveralremotecontrolunitsareconnectedinparallelthetotalsystemimpedancewill
decreasetoapointwhereoperationisdegraded.Thisoccurswhenthreeormoreremotesareconnectedinparallel.
Tocompensateforthiseffect,TRseriesremotesprovideaswitchselectable600ohmor5000ohmimpedeance.
Inparallelremoteinstallationsusingthesamephoneline,dipswitch1shouldbeintheOFFposition(5000ohms),
inallremotesexceptthelastoneinthechain.Formulti-pointinstallationsusing morethanonephonelinetheabove
procedure applies to each phone line.
UptotenTRseriestoneremotesmaybeconnectedinparallel.Themaximumlossbetweenanyremoteandthe
terminationpanelmustnotexceed20db.
LevelSetting
Thefollowingadjustmentsassumethattheterminationpanelhasbeenproperlyinstalled.
LineInput-Thereceivelineinput,R89,adjuststheaudioleveltotheinputofthecompressionamplifiercircuitry.
This allows the threshold of compression be adjusted from -20 dBm to +10 dBm.
While applying an RF signal modulated with a 1000 Hz tone at 60% system deviation to base station receiver,
adjust the termination panel line output control for 0 dbm to the phone line. Adjust each remote as follows:
a. Connect a scope or analog AC volt meter to ground and pin 14 of U2.
b.WithR89fully clockwise,adjust inacounter-clockwisedirectionuntil theAC voltagelevelonscope(approx.
1Vpeak topeak) ormeter (approx.360 mVrms) juststops increasing.This pointis thethreshold of compression.
c. Remove the RF Signal from the base station.
Line Out - This level is preset at the factory for 0 dbm out to the phone line and may not require readjustment
at installation. If needed, the procedure is as follows:
1.With thehandsetoff-hook, ifapplicable,depress theintercomswitch andadjustthe modoutpot (R63)while
speaking in a normal voice until 0 dbm is measured across the phone line at the termination panel.
2.Movedipswitch7totheonpositionandkeytheremote.AdjustR80(ToneLevel)untilthe1950Hzfunctiontone
measures 0 dBm across the phone line at the termination panel.
Notch filter -The2175Hznotch filter isfactorytunedandshould not needreadjustment exceptintheeventof
repair. Adjustment procedure is as follows:
a. Apply a 0 dBm, 2.2Vpp, 2175 Hz signal across the red and green phone line inputs.
b. Using a dual channel scope in the X-Y mode, connect one probe to pin 14 of U2, the other to pin 8 of U3.
c. Adjust R39 until the lissajous pattern on the screen closes to a flat line. Remove probes.
d.Withthescopeinthesinglechannelmode,connectprobetopin14ofU3.AdjustR38toobtainminimumsignal

4
level on the scope. Readjust R39 slightly to further reduce signal level. Recheck R38 then R39. Notch will be
approximately58dBdeep.
Microphone Sensitivity - R75 controls the microphone audio level into the transmit compression circuit and
thereforeactsasasensitivitycontrol.Thispotentiometerhasbeenfactorysettoprovideadequatecompressionfor
normalvoice audiowith arelatively quietbackground noise level.
JumperSettings
The TR series circuit board has 9 "Dot" jumpers. These jumpers are "in" if there is a solder short across it and
"out"ifthereisnot.Table1liststhejumpersbynumberandexplainstheirfunction. Factorysettingsareunderlined.
Table 1
Dip Switch Settings
Table 2 describes the functions provided by the dip switch on the bottom of the unit. The factory setting are
underlined.
Table 2
Switch # ON OFF
1600 ohm termination 5000 ohm termination
2TR 10 (Does not affect TR30 or TR40) TR20 (Does not affect TR30 or TR40)
3 TR30 or TR40 TR10 or TR20
4 TR20 TR10, TR30 or TR40
5Allows volume to be turned down
completely. Prevents volume from being turned down
completely.
6TR20, TR30 or TR40 - SPKR always ON TR10 - SPKR mute with handset off-hook
7Locks up function tone (0 dBm) Normal operation
8 Disables tone attenuation (All tones at +10
dBM) Normal operation
JP# IN OUT
1For 2 wire operation. For 4 Wire or FD operation.
2For 4 Wire or FD operation. For 2 wire operation.
3For 2 wire operation. For 4 Wire or FD operation.
4For FD operation. For Non-FD operation.
5For FD operation. For Non-FD operation.
6Normal boom/panel mic gain. Increased boom/panel mic gain.
7Three to ten frequency models. One and two frequency models.
8Three to ten frequency models. One and two frequency models.
9Three to ten frequency models. One and two frequency models.

5
CircuitAnalysis
ReceiveAudioPath
ReceiveaudiofromthephonelineentersthroughtransformerT1.ThecontrolforReceivelineinput,R89,adjusts
thesignal levelpassed totheremaining receiveaudio circuitry.This signal iscoupled throughaudio gateU9-B to
the compression amplifier formed by U2-A, B and C. The compression amplifier operates by sampling the output
of U2-C through C5 and R32 and then rectifying it with D1 and D2. The rectified DC voltage, which varies as the
receiveaudiolevelvaries,controlstheimpedanceofQ2.ThevaryingimpedanceofQ2controlsthesignallevelinput
to U2-B. C6 and R8 control the compressor attack and decay time. U2D and it's associated circuitry form a high
pass audio filter which reduces 60 Hz components by as much as 40 db.
The compressor output is passed to the notch filter through R19. The notch filter is made up of U3, sections A,
B,C and D,andtheir associatedcomponents.It is tunedtothe notchfrequencyby adjusting R39andR38. When
properlytuned,the2175Hzcomponentoftheaudiosignalisreducedbyasmuchas50db.Theoutputofthenotch
ispassed to the front panelvolume controlthrough audiogate U9-A. Padded output audiois gatedthrough U6-C
tothereceiveaudioamplifiersU4andU5.LowlevelaudioforthehandsetearpieceisprovidedbyU7-Dandadjusted
by R96. It is then gated through U6-B, buffered by U7-C and sent to the handset.
TransmitAudioPath
Miclevel audiois fedto preampU7-A orU7-B, dependingon whichmic is used. Preamplified transmitaudio is
routedthroughaudiogateU6-AorU6-D,dependingonwhichmicisused,tothemicleveladjustmentR75.R75sets
thesignallevelpassedtothecompressionamplifierformedbyU2.Thecompressionamplifieroperatesbysampling
theoutputofU2-CthroughR32andC5andthenrectifyingitwithD1andD2.TherectifiedDCvoltage,whichvaries
asthetransmitaudio level varies,controlstheimpedanceofQ2.ThevaryingimpedanceofQ2controlsthesignal
levelinputtoU2-B.C6andR8controlthecompressorattackanddecaytime.U2-Dandit'sassociatedcircuitryform
a high pass audio filter which reduces 60 Hz components by as much as 40 dB.
The compressor output is passed to the notch filter through R19. The notch filter is made up of U3, sections A,
B,C and D,andtheir associatedcomponents.It is tunedtothe notchfrequencyby adjusting R39andR38. When
properlytuned,the2175Hzcomponentoftheaudiosignalisreducedbyasmuchas50db.Theoutputofthenotch
isgatedthroughU9-D and fedtothephonelinedrivercircuitofU10-AandU10-C.U10-AandU10-Cformapush-
pull amplifier to drive transformer T1.
TransmitMode
WhenthePTTlineisgrounded,pin24ofU17sensesthegroundandprovidestimedlogichighoutputsfrompins
10and11enablingaudiogatesU11-BandU11-C.U12simultaneouslypassesa16bitdigitalwordtothemonolithic
sine wave generator U12 determining the frequency to be output to control tone amplifier U13. The control tone
amplificationisadjustedbyR80.AmplifiedcontroltonesfromU13-BarefedtothephonelinedrivercircuitofU10-
AandU10-C.U10-AandU10-Cformapush-pullamplifiertodrivetransformerT1.Simultaneously,pins12,13and
14 of U17 are manipulated to control transmit and receive audio gating through control lines 1, 2 and 3.
Parts List
TR Series main PCB #700-DRBB-200 Rev. B
Reference Description CPI Part #
CAPACITORS
C5, 6 1uF Elec Rad 208-4052-105
C7,14,27,37,39,40,44,48,53,60 .1uF Mono Cer Dip 208-0092-104
C8 470pF Cer Disc 208-0002-471
C9 .47uF Elec Rad 208-4052-474

6
Reference Description CPI Part #
C10,11 .01uF 1% Mono Cer Dip 208-0071-103
C12,28,45,46 220uFElec Rad 208-2021-227
C13,17 4.7uF Elec Rad 208-4042-475
C15,16,41,55,56,59,65,67 .1uF Mono Cer Dip 208-0092-103
C22,23,24,54 .033uFMetMylar 208-0212-333
C25 2200pF 208-0071-103
C26 220uF Elec Rad NP 208-2031-227
C32,33 4.7uF Elec Rad 208-2062-475
C36,50,52,57 100uFElec Rad 208-2021-107
C38 22uF Elec Rad 208-2022-226
C42 47pF Mono Cer Dip 208-0071-470
C43 180pF Mono Cer Dip 208-0071-181
C47 1000uFElecRad 208-2031-108
C49,51,58 2.2uF Elec Rad 208-4052-225
C61,62 20pF Cer Disc 208-0001-200
C63 10pF Cer Disc 208-0001-106
DIODES
D1,2,12 1N4148 212-0001-001
D7 1N4746 212-0100-019
D8,9,10,11 1N4004 212-0002-004
D13 1N4935A 212-0100-008
TRANSISTORS
Q2,10,11 2N2222NPN 240-2222-000
Q4 MJE521NPN 212-0001-002
Q5,6,7,8,9 2N2907PNP 242-2907-000
RESISTORS
R7,32,36,49,82,97,102,119,123,125 1K 1/4W 5% 242-0001-102
R8 1.8M 1/4W 5% 242-0001-185
R9,11,35,37,69,77,78,79,81,95,103,104, 10K 1/4W 5% 242-0001-103
106,115,116,120
R10,20,23,34,42,71,100,105,109 100K 1/4W 5% 242-0001-104
R12,14,17,18 10.0K 1/4W 1% 242-0014-100
R13 6.81K 1/4W 1% 242-0013-681
R15,74 7.32K 1/4W 1% 242-0013-732
R16,19 44.2K 1/4W 1% 242-0014-442
R21 22K 1/4W 5% 242-0001-223
R30 6.8K 1/4W 5% 242-0001-682
R31 220K 1/4W 5% 242-0001-224
R33 1.2K 1/4W 5% 242-0001-122
R40,70 3.9K 1/4W 5% 242-0001-392
R41,43,44,111 2.7 1/4W 5% 242-0001-027
R47 560K 1/4W 5% 242-0001-564
R64 5.1K 1/4W 5% 242-0001-512
R65,62,86 27K 1/4W 5% 242-0001-273
R66,67 68K 1/4W 5% 242-0001-683
R68,73 100 1/4W 5% 242-0001-101
R72,84,126,127 18K 1/4W 5% 242-0001-183
R74 1M 1/4W 5% 242-0001-105
R83 150K 1/4W 5% 242-0001-154
R85 62K 1/4W 5% 242-0001-623
R87,88 620 1/4W 5% 242-0001-621
R90 220 1/4W 5% 242-0001-221
R91 17.4K 1/4W 1% 242-0014-174

7
Reference Description CPI Part #
R92 3.3K 1/4W 5% 242-0001-332
R93 240K 1/4W 1% 242-0015-240
R98,99,110,122,124 47K 1/4W 5% 242-0001-473
R107,108,113,114 120K 1/4W 5% 242-0001-124
R112 39K 1/4W 5% 242-0001-393
R117 200K 1/4W 5% 242-0001-204
R118 82K 1/4W 5% 242-0001-823
R121 12K 1/4W 5% 242-0001-123
R128 4.7K 1/4W 5% 242-0001-472
RN1 ResistorNetwork100Kx9 242-0117-104
POTENTIOMETERS
R38,39 1K Multi-turn VertAdj 242-0104-102
R63 250K Single turn Vert Adj 242-0101-254
R75 5K Single turn Vert Adj 242-0101-502
R76,89,96 25K Single turn Vert Adj 242-0101-253
R80 10K Single turn Vert Adj 242-0101-103
INTEGRATEDCIRCUITS
U2,3,7,10,13,14 QuadBi-FETOp Amp 420-L347-000
U4,5 AudioPower Amp 420-0380-000
U6,9,11 QuadBilateralSwitch 420-4066-000
U12 ToneGenerator 420-2035-000
U15 QuadLowPowerOpAmp 420-0324-000
U16 UnderVoltageSensor 425-7757-000
U17 Micro-Controller 425-1655-000
MISC.
J2 (TR10) HandsetJack 228-0041-010
J2 (TR20) Desk Mic Jack 228-0041-186
J3 Mod Jack Bottom Entry 228-0041-026
J4 HeaderShrouded 26Position 228-0101-001
L1, L2, L3, L4 150uHChoke 232-0000-150
V1, V2, V3, V4 MOVERZC05DK33026V 242-0119-241
S1(TR10) HookSwitch 244-0100-009
S2 8Position Dip Switch 244-0002-008
T1 TransformerAudio600:600 246-0100-003
Y1 Crystal4Mhz 258-0002-002
TR series Top PCB #700-00FP-200 revision C
D1,D3 LED Green Dot 214-0005-002
D2 LED Red Dot 214-0003-001
R1 10KVolumePot 242-0115-103
LS1 8OhmOval 234-0001-004
S1,S2,S4 PushButton Switch,Black 244-0030-000
S3 PushButtonSwitch,Red 244-0030-002
X1 (DR10 & DR30) ElectretMicrophone 234-0002-004
X1 (DR40) GooseneckMicrophone 234-0003-003
26positioncable assembly 600-0TSR-025

1993C
S/N
COMMUNICATIONS
CPI
REV C
700-00FP-200
FRONT PANEL
J1
R1 JP1
S2
S3
S4
S1
LS1
D2
D3
D1
X1
1993C
S/N
COMMUNICATIONS
CPI
REV C
700-00FP-200
FRONT PANEL
J1
R1 JP1
S2
S3
S4
S1
LS1
D2
D3
D1
X1
Component Side
Solder Side
8
PCB View - Control Panel #700-00FP-200

A
A
B
B
C
C
D
D
E
E
44
33
22
11
Monday, September 18, 1995
C
Control Panel - DR, LE & TR Series
A
1
Title Size
Document Number
Rev
Date:
Sheet of
S1 KS11R9
D3 LED GRN
X1 WM54BT
LS1
SPEAKER
D1 LED GRN
D2 LED RED
S2 KS11R9
S3
KS11R3
JP1 HEADER 5
1 2 3 4 5
S4 KS11R9
J1 CON26A
1 3 5 7 9 11 13 15 17 19 21 23 25
2 4 6 8
10 12 14 16 18 20 22 24 26
R1
10K POT
PTT
PTT
VCC
VCC
THIS PART IS LOCATED OFF-BOARD.
WHT GRN VIO
ORG
BLK
THIS PART IS LOCATED OFF-BOARD.
FRONT PANEL MIC
ENCODER INPUT
PTT
F1 / F2
PTT
F1
F2
INTERCOM
MONITOR
CPI Communications, Inc.
9

Q3
R22
Q2
C5
CPI COMMUNICATIONS,INC.
C1
C17
C16
C13
C15
C14
R21
R20
C12
R17
J1
J2
C11
C10
C9
C7 C8
R9
R10
R11
D2
C6
D1
R4
R5
R6
R7
R8
C3
C4
R1
R2
R3
Q1 C2
U5
R43
R23
C26
U4
R18
R19
R15
R16
U3
R12
R13
R14
R
R34
R35
R36
R32
R33
W
NO
U2
R30
R31
D3
C18
U1
R46
R44
R45
C28
C27
U6 R42
R41
R39
C25
R38
37
C24
S1
C23
NC
R29
D4
C22
R26
R27
R28
C
R24
R25
TR SERIES
R49
D6
D5
R47
R74
R126
C41
C40
R40
R127
C37
C36
J3
C32
C21
T1
R53
C19
C20
R52
R54
1994
R51
R75
R73
R68
R69
R70
R71
R72
R64
R65
R66
R67
C38 C39
R63
L2
L3
L4
C33
C34
L1
JU1
R61
R62
JU2
R50
C29
700-TRBB-200
R80
JU6
C42
R78
R77
R76
C66
C65
V2
V3
V4
C35
C64
V1
C31
JU3
JU4
R57
R58
R59
R60
R55
R56
C30
R96
R94
U7
R91
R92
R93
R79
C43
C44
C67
R88
JU5
R83
R84
R85
R86
R87
R81
R82
T2
U9
U8
C45
R110
R109
R95
U13
S2
C55
R90
R89
U10
D12
C52
C51
C48
F1
D10
D8
D7
REV C
R111
U14
C57
C56
R108
U11
R106
R107
R105
U12
C53
R102
R103
R104
Q5
R99
R100
R101
C49
R97
C46 C47
Q4
S/N
Q10
R121
C59
R119
R120
C58
R128
C54
U17
U16
R98
D11
C50
D9
Q11
C60
R118
D13
Q9
R115
R116
R117
Q8
R113
R114
JU9
JU7
C61
RN1
R112
Q7
Y1
Q6
U15
TB1
J4
JU8
C62
C63
R123
R124
R125
R122
PCB View for Main PCB #700-LEBB-200, Rev. C
10

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
MOD OUT
BALANCE
ADJUST
RX INPUT
APC DA1561
|LINK
|SHEET2.SCH
|SHEET3.SCH
|SHEET4.SCH
SW1
INSTALL FOR
FULL DUPLEX
(
2 PAIR
)
INSTALL JU1
& JU3 FOR
HALF DUPLEX
(
1 PAIR
)
INSTALL FOR
FULL DUPLEX
(
2PAIR
)
BOTTOM
ENTRY
R61 INSTALLED
FOR -FD OR -4W
C
TR SERIES TONE REMOTES
CPI COMMUNICATIONS, INC.
B
14Frida
y
, Januar
y
03, 1997
Title
Size Document Number Rev
Date: Sheet of
VOL HI VOL WPR
VOL LO PANEL/BOOM MIC
SPEAKER HI PTT LED
MONITOR SWITCH PTT
INTERCOM SWITCH F1/F2 SWITCH
F2 LED F1 LED
ENCODER INPUT
SCK
SID OUT
LATI 8
SID IN AUX
SPEAKER LO RX AUDIO
CONTROL 1
ENCODER INPUT
RED CONTROL TONES
CONTROL 3 TX AUDIO
GREEN
BLACK
YELLOW
VCC
+10
+5
VCC
VB
VB
VSS
VCC VDD
GND
VB
VEE
VB
VB
VCC
+10
+5
L4
150uH
L2
150uH
L3
150uH
L1
150uH
T2
600:600
1 8
4 5
U10A
LF347
+
-
3
2
1
R81
10K
R61
620
U10B
LF347
+
-
5
67
R83
150K
R82
1K
R87
620
R63
250K POT 13
2
U10C
LF347
+
-
10
9
8
R88
620
C44
.1uF
D10
D8
C47
1000uF
R97
1K
Q4
MJE520
C45
220uF
C46
220uF
R119
1K
D13
1N4735A R117 200K C58
2.2UF
R99
47K
R98
47K C49
2.2uF
C51
2.2uF
R116
10K
U10D
LF347
+
-
12
13 14
C48
.1uF C52 100uF
Q8
2N2907
R115
10K
C57
100uF
Q9
2N2907
R120
10K
Q10
2N2222 Q11
2N2222
R111
2.7
D11
D9
TB1 1
2
3
C59
.01uF
C60
.1uF C50
100uF
C33
4.7uF 100V
C34
4.7uF 100V
C35
4.7uF 100V
T1
600:600
1 8
4 5
C32
4.7uF 100V
D7
1N4746
F1
1 AMP
R118
82K
U14A
LF347
+
-
3
21R121
12K
U14B
LF347
+
-
5
67
R62
27K
C43
180pF
R89
25K POT 13
2
161R86
27K
R85
62K
R84
18K
C67
.01
C65
.01
C66
.01
C64
.01
R76
25K POT
1 3
2
V4
ERZ-C05DK330
V2
ERZ-C05DK330
V3
ERZ-C05DK330
V1
ERZ-C05DK330
J3
MOD JACK
5
6
3
4
1
2
J4
CON26A
1
3
5
7
9
11
13
15
17
19
21
23
25
2
4
6
8
10
12
14
16
18
20
22
24
26
U9B
4066
11 10
12
U11A
4066
1 2
13
JU5
SOLDER JUMPER
JU1
SOLDER JUMPER
JU3
SOLDER JUMPER
JU2
SOLDER JUMPER

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
SHOWN OFF-HOOK
TONE LEVEL
SW7
SW8
C
TR SERIES
CPI COMMUNICATIONS, INC.
B
24Frida
y
, Januar
y
03, 1997
Title
Size Document Number Rev
Date: Sheet of
MONITOR SWITCH
CONTROL 1
CONTROL 2
PTT
CONTROL 3
INTERCOM SWITCH
AUX
8
F2 LED 4
F1 LED
F1/F2 SWITCH
SCK
SID OUT
PTT LED LATI
SID IN
CONTROL 4
CONTROL TONES
CONTROL 5
2
AUX PTT LED
1
+10
+10 +7.5
VB
VB
VB
+5
+5
VSSVCC VDD GND VEE
VB
+5
+10
+5
+10
+10
+7.5
+7.5
+5
+5
+10
+10
+10
U12
ML2035
SCK
2
SID
3
LATI
4
CLK 8
VCC
5VSS 1
VOUT 6
VDD 7
R95
10K
R106
10K
R109
100K
R110
47K
R80
10K POT
13
2
R92
3.3K
U15A
LM324
+
-
3
21
U15B
LM324
+
-
5
67
C54
.033uF
C63
10pF
Y1
4.0MHZ
U16
TL7757
GND 3
RST
1+V 2
R112
39K
C53
.1uF
R102
1K
R114
120K
C55
.01uF
C56
.01uF
Q5 2N2907
R104
10K R103
10K
D12
1N4148
R105
100K
R101
100K
R100
100K
U15D
LM324
+
-
12
13 14
U15C
LM324
+
-
10
98
U13A
LF347
+
-
3
2
1
U13B
LF347
+
-
5
6
7
U13C
LF347
+
-
10
98
U13D
LF347
+
-
12
13
14
C61
20pF
C62
20pF
51 61 71 81 91 101 21 31
S1
HOOK SWITCH
U17
CPIMICRO2
MCLR
28
VDD
2
RB6
16
RC5
23 RC4
22
RC6
24
RC7
25
RC0
18
RC1
19
RC2
20
RC3
21
RB7
17
RB5
15
RTCC
1
VSS
4
OSC 27
RA3 9
RA2 8
RA1 7
RA0 6
RB1 11
RB0 10
RB4 14
RB3 13
RB2 12
CLKOUT 26
R128
4.7K
U14C
LF347
+
-
10
9
8
107
U14D
LF347
+
-
12
13 14
R93
240.0K
98
R94
7.32K
R91
17.4K
R113
120K
R107
120K
R108
120K
RN1C
100K X 9
41
R122
47K
R123
1K
Q7
2N2907 R124
47K
R125
1K
Q6
2N2907
U11B
4066
1110
12
U11C
4066
43
5
JU9
SOLDER JUMPER
JU8
SOLDER JUMPER
JU7
SOLDER JUMPER

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
EARPIECE
ADJUST
SW2 SW3
SW4
SW5
SW6
REMOVE FOR INCREASED
PANEL/BOOM MIC GAIN
MIC LEVEL
INSTALL FOR
FULL DUPLEX
(2 PAIRS)
NOTE: U6 IS REMOVED
AND TR40
ON TR20, TR30
C
TR SERIES
CPI COMMUNICATIONS, INC.
C
34Frida
y
, Januar
y
03, 1997
Title
Size Document Number Rev
Date: Sheet of
RX AUDIO
COMPRESSOR OUT
CONTROL 5
CONTROL 3
PANEL/BOOM MIC
DESK MIC BIAS
FD PATH
HANDSET/DESK MIC HI
CONTROL 2
CONTROL 4
TX AUDIO
BEEP INPUT
CONTROL 1
EARPIECE
SPEAKER HI AUX INPUT 2 CONTROL 4
VOL HI
AUX PTT LED
AUX INPUT 2
VOL HI
VOL WPR BEEP INPUT
COMPRESSOR OUT
CONTROL 5
VOL LO
SPEAKER LO
CONTROL 1
VCC
VCC
VB
VB
VB
VB
+5
VB
VB
VBVB
VB
VB
VBVB
VB
VB
VB
VSS
VCC VDD
GND VEE
VB
VB
VCC
VB
R37
10K
C9
.47uF
C7
.1uF
R9
10K
Q2
2N2222
R7
1K
U2A
LF347
+
-
3
2
1
R8
1.8M C6
1uF
D1
1N4148
D2
1N4148
R32
1K
R34
100K
U2C
LF347
+
-
10
98
R35
10K
R10
100K
C8
470pF
C24
.033uF
C22
.033uF
R30
6.8K
C23
.033uF
R33
1.2K
U2D
LF347
+
-
12
13 14
R43
2.7
C17
4.7uF
R41
2.7
C13
4.7uF
C16
.01uF
R21
22K
R23
100K
R42
100K
R19
44.2K
R16
44.2K
R15
7.32K
R12
10.0K
R38
1K POT
13
2
C25
2.2nF
R11
10K
R77
10K
R78
10K
U7D
LF347
+
-
12
13 14
R71
100K
U7C
LF347
+
-
10
98R73
100
C38
22uF C37
.1uF
R74
1M
U7B
LF347
+
-
5
67
R69
10K
R68
100
R64
5.1K
C40
.1uF
R40
3.9K
C36
100uF
R65
27K R13
6.81K
R14
10.0K
U3A
LF347
+
-
3
2
1
U3B
LF347
+
-
5
6
7
R18
10.0K
R45
10K
D6
1N4148
D5
1N4148
R46
10K
R44
2.7
C27
.1uF
C14
.1uF
R20
100K
C39
.1uF
R17
10.0K
C5
1uF
R79
10K
C10
.01uF 1%
C11
.01uF 1%
C26
220uF NP
R31
220K
U2B
LF347
+
-
5
67
U3D
LF347
+
-
12
13
14
U3C
LF347
+
-
10
9
8
U7A
LF347
+
-
3
21
C28
220uF
C12
220uF Q3
2N2907
R22
10
C41
.01uF
R70
3.9K
R47
560K
C42
47pF
152R66
68K
R67
68K
R49
1K
143
134
R126
18K
R127
18K
R36
1K
R72
18K
116
125
R90
220
R39
1K POT
13
2
R96
25K POT
13
2
C15
.01uF
J1
CON10
1
2
3
4
5
6
7
8
9
10
R75
5K POT
1 3
2
U6D
4066
89
6
U9C
4066
4 3
5
U6A
4066
1 2
13
U9D
4066
89
6
U9A
4066
1 2
13
U5
LM380
+
-
2
6
8
14 7
1
U4
LM380
+
-
2
6
8
14 7
1
U6C
4066
4 3
5
U6B
4066
11 10
12
JU6
SOLDER JUMPER
JU4
SOLDER JUMPER

1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A A
B B
C C
D D
BOTTOM VIEW
C
TR SERIES
CPI COMMUNICATIONS, INC.
B
44Frida
y
, Januar
y
03, 1997
Title
Size Document Number Rev
Date: Sheet of
FD PATH
TX AUDIO
CONTROL 2
DESK MIC BIAS
HANDSET/DESK MIC HI AUX PTT LED
PTT AUX INPUT 2
EARPIECE VOL HI
BEEP INPUT
MONITOR SWITCH COMPRESSOR OUT
+5
VB
VB
VBVB
VB
VBVB
VB
VSS
VCC VDD
GND VEE
VB
VCC
R6
10K
C1
.47uF
C3
.1uF
R3
10K
Q1
2N2222
R24
1K
U1A
LF347
+
-
3
2
1
R1
1.8M C2
1uF
D3
1N4148 D4
1N4148
R29
1K
R28
100K
U1C
LF347
+
-
10
98
R5
10K
R4
100K
C4
470pF
C20
.033uF
C19
.033uF
R27
6.8K
C18
.033uF
R25
1.2K
U1D
LF347
+
-
12
13 14
R51
44.2K
R58
44.2K
R57
7.32K
R56
10.0K
C31
2.2nF
R59
10K
R50
6.81K
R55
10.0K
U8A
LF347
+
-
3
2
1
R53
10.0K
C21
1uF
R60
10.0K
C30
.01uF 1%
C29
.01uF 1%
U1B
LF347
+
-
5
67
U8C
LF347
+
-
10
9
8
U8B
LF347
+
-
5
6
7
R26
220K
R54
1K POT
13
2
U8D
LF347
+
-
12
13
14
J1
CON10
1
2
3
4
5
6
7
8
9
10
J2
MODJACK 6
5
6
3
4
1
2
R2
1K
R52
1K POT
13
2
U11D
4066
8 9
6

COMMUNICATIONS, INC.
1186 COMMERCE DRIVE, RICHARDSON, TX. 75081
214-437-5320 800-869-9128 FAX [phone]
Model #
Serial #
Assembled by
Tested by
Packed by Mod Jack
R96
Earpiece Adj.
Dip Switch R63
Mod Out
R75
Mic Level
R89
RX Input
Location of externally adjustable controls.
15

16
Warranty
CPI Communications, Inc. warrants each product manufactured by it to be free from defective material and
workmanship and agrees to remedy any such defects or to furnish a new part in exchange for any part of any
unit of its manufacture which under normal installation use or service discloses such defects, provided the unit
isdeliveredbythe customerto ourauthorizedservicecenterintact, withall transportationchargesprepaidwithin
two years from date of shipment to the original purchaser. Exceptions are semiconductors which carry only the
manufacturer's standard warranty and lamp indicators and fuses which are warranted to be operational when
shipped from the factory. No credit will be given for unauthorized repair.
Thiswarranty doesnot extendto anyof ourproducts whichhave beensubjected to misuse, neglect, accident,
incorrectwiringnotourown,improperinstallation,ortouseinviolationofinstructionsfurnishedbyusnorextended
tounitswhichhavebeenrepairedoralteredoutsideofourfactoryorauthorizedservicecenter,nortocaseswhere
the serial number thereof has been removed, defaced, or changed, nor to accessories used therewith not of our
own manufacture, nor to finish or appearance items.
This warranty is in lieu of all other warranties expressed or implied and no person is authorized to assume
for us any other liability in connection with the sale of our products.
Please Note: CPI products are not authorized for use in applications where nonperformance may be life
threatening, or where substantial risk to life and property may be present, without express written consent of the
president of CPI Communications, Inc. CPI Communications, Inc. shall never be liable for consequential or
indirect damages.
Notes: