CPI TR Series Tone Remotes Instruction Manual

: June 6, 2024
: CPI

Table of Contents

TR Series Tone Remotes
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TR Series Tone Remotes

Instruction Manual
TR Series Tone Remotes
Rev. C

TR10

TR20

TR30

TR40 1

CONTENTS

Topic …………………………………………….. Page #
Specifications …………………………………………….. 2 General Description …………………………………….. 3 Installation ………………………………………………….. 3 Jumper settings …………………………………………… 4 Dip switch settings ……………………………………….. 4 Circuit Analysis …………………………………………… 5 Parts List ……………………………………………………. 5, 6, 7 Control Panel PCB View ……………………………….. 8 Control Panel PCB Schematic ……………………….. 9 Main PCB View …………………………………………… 10 Main PCB Schematic …………………………………… 11,12,13,14 External Adjustments ……………………………………. 15 Warranty ……………………………………………………. 16

SPECIFICATIONS Subject to change without notice.

Power Requirements

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.

Handset Earpiece Level

Volume Control Adjustable.

Frequency Response

+/- 3dB from 300 to 3000 Hz, except at notch freq. 1000 Hz reference.

Hum and Noise

50 dB below operating levels

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.

Line Impedance

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. Function Tone: F1 1950 Hz +/- 0.01% @ 0 dBm for 40 mS.
F2 1850 Hz +/- 0.01% @ 0 dBm for 40 mS. Monitor Tone: 2050 Hz +/- 0.01% @ 0 dBm for 40 mS. Hold Tone: 2175 Hz +/- 0.01% @ -20 dBm for duration of PTT.

Operating Modes

Standard: Two wire simplex Optional: Two wire duplex, four wire simplex and four wire duplex.

2

General Description
The TR series tone remotes are designed to provide remote control of a conventional or trunked two way radio base station or repeater via a leased wire line, in-house twisted pair or RF link.
The TR series is available in four different housing configurations. They are: the TR10 telephone style unit with handset, the TR20 desktop console with desk microphone, the TR30 desktop console with built in electret condenser microphone and the TR40 desktop console with goose neck microphone.
Standard features on all TR models include front panel PTT switch, LED transmit indicator, monitor function, intercom function, two watt amplified speaker with volume control.
The TR10, 20, 30 and 40 may be wall mounted by ordering the -WM option. When wall mounting the TR20 please note, no provisions are made for mounting the desk microphone.
TR series units are normally powered by the supplied wall plug-in transformer. The may also be powered from a 12 volt DC source by removing the wall pack and making the appropriate DC connections to TB1.
Installation
The TR series tone remotes will work with any remote system using the EIA standard tone control format. They are designed with protection against both power and telephone line surges. This protection circuitry requires a properly grounded AC outlet be used to power the wall pack. If the remote is to be powered directly from DC, a well 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.
Parallel operation – When several remote control units are connected in parallel the total system impedance will decrease to a point where operation is degraded. This occurs when three or more remotes are connected in parallel.
To compensate for this effect, TR series remotes provide a switch selectable 600 ohm or 5000 ohm impedeance. In parallel remote installations using the same phone line, dip switch 1 should be in the OFF position (5000 ohms), in all remotes except the last one in the chain. For multi-point installations using more than one phone line the above procedure applies to each phone line.
Up to ten TR series tone remotes may be connected in parallel. The maximum loss between any remote and the termination panel must not exceed 20db.
Level Setting The following adjustments assume that the termination panel has been properly installed.
Line Input – The receive line input, R89, adjusts the audio level to the input of the compression amplifier circuitry. 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. With R89 fully clockwise, adjust in a counter-clockwise direction until the AC voltage level on scope (approx. 1V peak to peak) or meter (approx. 360 mVrms) just stops increasing. This point is the threshold 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 the handset off-hook, if applicable, depress the intercom switch and adjust the mod out pot (R63) while speaking in a normal voice until 0 dbm is measured across the phone line at the termination panel.
2. Move dip switch 7 to the on position and key the remote. Adjust R80 (Tone Level) until the 1950Hz function tone measures 0 dBm across the phone line at the termination panel.
Notch filter – The 2175 Hz notch filter is factory tuned and should not need readjustment except in the event of 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. With the scope in the single channel mode, connect probe to pin 14 of U3. Adjust R38 to obtain minimum signal
3

level on the scope. Readjust R39 slightly to further reduce signal level. Recheck R38 then R39. Notch will be approximately 58 dB deep.
Microphone Sensitivity – R75 controls the microphone audio level into the transmit compression circuit and therefore acts as a sensitivity control. This potentiometer has been factory set to provide adequate compression for normal voice audio with a relatively quiet background noise level.
Jumper Settings
The TR series circuit board has 9 “Dot” jumpers. These jumpers are “in” if there is a solder short across it and “out” if there is not. Table 1 lists the jumpers by number and explains their function. Factory settings are underlined.

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

JP#

IN

OUT

1

For 2 wire operation.

For 4 Wire or FD operation.

2

For 4 Wire or FD operation.

For 2 wire operation.

3

For 2 wire operation.

For 4 Wire or FD operation.

4

For FD operation.

For Non-FD operation.

5

For FD operation.

For Non-FD operation.

6

Normal boom/panel mic gain.

Increased boom/panel mic gain.

7

Three to ten frequency models.

One and two frequency models.

8

Three to ten frequency models.

One and two frequency models.

9

Three to ten frequency models.

One and two frequency models.

underlined.

Table 2

Switch # 1 2 3 4 5
6 7 8
4

ON 600 ohm termination TR 10 (Does not affect TR30 or TR40)
TR30 or TR40 TR20
Allows volume to be turned down completely.
TR20, TR30 or TR40 – SPKR always ON Locks up function tone (0 dBm)
Disables tone attenuation (All tones at +10 dBM)

OFF 5000 ohm termination TR20 (Does not affect TR30 or TR40)
TR10 or TR20 TR10, TR30 or TR40 Prevents volume from being turned down
completely. TR10 – SPKR mute with handset off-hook
Normal operation Normal operation

Circuit Analysis
Receive Audio Path Receive audio from the phone line enters through transformer T1. The control for Receive line input, R89, adjusts
the signal level passed to the remaining receive audio circuitry. This signal is coupled through audio gate U9-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 receive audio level varies, controls the impedance of Q2. The varying impedance of Q2 controls the signal level input 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, and their associated components. It is tuned to the notch frequency by adjusting R39 and R38. When properly tuned, the 2175 Hz component of the audio signal is reduced by as much as 50 db. The output of the notch is passed to the front panel volume control through audio gate U9-A. Padded output audio is gated through U6-C to the receive audio amplifiers U4 and U5. Low level audio for the handset earpiece is provided by U7-D and adjusted by R96. It is then gated through U6-B, buffered by U7-C and sent to the handset.
Transmit Audio Path Mic level audio is fed to preamp U7-A or U7-B, depending on which mic is used. Preamplified transmit audio is
routed through audio gate U6-A or U6-D, depending on which mic is used, to the mic level adjustment R75. R75 sets the signal level passed to the compression amplifier formed by U2. The compression amplifier operates by sampling the output of U2-C through R32 and C5 and then rectifying it with D1 and D2. The rectified DC voltage, which varies as the transmit audio level varies, controls the impedance of Q2. The varying impedance of Q2 controls the signal level input to U2-B. C6 and R8 control the compressor attack and decay time. U2-D 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, and their associated components. It is tuned to the notch frequency by adjusting R39 and R38. When properly tuned, the 2175 Hz component of the audio signal is reduced by as much as 50 db. The output of the notch is gated through U9-D and fed to the phone line driver circuit of U10-A and U10-C. U10-A and U10-C form a pushpull amplifier to drive transformer T1.
Transmit Mode When the PTT line is grounded, pin 24 of U17 senses the ground and provides timed logic high outputs from pins
10 and 11 enabling audio gates U11-B and U11-C. U12 simultaneously passes a 16 bit digital word to the monolithic sine wave generator U12 determining the frequency to be output to control tone amplifier U13. The control tone amplification is adjusted by R80. Amplified control tones from U13-B are fed to the phone line driver circuit of U10A and U10-C. U10-A and U10-C form a push-pull amplifier to drive transformer T1. Simultaneously, pins 12, 13 and 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
CAPACITORS C5, 6 C7,14,27,37,39,40,44,48,53,60 C8 C9

Description
1uF Elec Rad .1uF Mono Cer Dip 470pF Cer Disc .47uF Elec Rad

CPI Part #
208-4052-105 208-0092-104 208-0002-471 208-4052-474
5

Reference C10,11 C12,28,45,46 C13,17 C15,16,41,55,56,59,65,67 C22,23,24,54 C25 C26 C32,33 C36,50,52,57 C38 C42 C43 C47 C49,51,58 C61,62 C63
DIODES D1,2,12 D7 D8,9,10,11 D13
TRANSISTORS Q2,10,11 Q4 Q5,6,7,8,9
RESISTORS R7,32,36,49,82,97,102,119,123,125 R8 R9,11,35,37,69,77,78,79,81,95,103,104, 106,115,116,120 R10,20,23,34,42,71,100,105,109 R12,14,17,18 R13 R15,74 R16,19 R21 R30 R31 R33 R40,70 R41,43,44,111 R47 R64 R65,62,86 R66,67 R68,73 R72,84,126,127 R74 R83 R85 R87,88 R90 R91
6

Description .01uF 1% Mono Cer Dip 220uF Elec Rad 4.7uF Elec Rad .1uF Mono Cer Dip .033uF Met Mylar 2200pF 220uF Elec Rad NP 4.7uF Elec Rad 100uF Elec Rad 22uF Elec Rad 47pF Mono Cer Dip 180pF Mono Cer Dip 1000uF Elec Rad 2.2uF Elec Rad 20pF Cer Disc 10pF Cer Disc
1N4148 1N4746 1N4004 1N4935A
2N2222 NPN MJE521 NPN 2N2907 PNP
1K 1/4W 5% 1.8M 1/4W 5% 10K 1/4W 5%
100K 1/4W 5% 10.0K 1/4W 1% 6.81K 1/4W 1% 7.32K 1/4W 1% 44.2K 1/4W 1% 22K 1/4W 5% 6.8K 1/4W 5% 220K 1/4W 5% 1.2K 1/4W 5% 3.9K 1/4W 5% 2.7 1/4W 5% 560K 1/4W 5% 5.1K 1/4W 5% 27K 1/4W 5% 68K 1/4W 5% 100 1/4W 5% 18K 1/4W 5% 1M 1/4W 5% 150K 1/4W 5% 62K 1/4W 5% 620 1/4W 5% 220 1/4W 5% 17.4K 1/4W 1%

CPI Part # 208-0071-103 208-2021-227 208-4042-475 208-0092-103 208-0212-333 208-0071-103 208-2031-227 208-2062-475 208-2021-107 208-2022-226 208-0071-470 208-0071-181 208-2031-108 208-4052-225 208-0001-200 208-0001-106
212-0001-001 212-0100-019 212-0002-004 212-0100-008
240-2222-000 212-0001-002 242-2907-000
242-0001-102 242-0001-185 242-0001-103
242-0001-104 242-0014-100 242-0013-681 242-0013-732 242-0014-442 242-0001-223 242-0001-682 242-0001-224 242-0001-122 242-0001-392 242-0001-027 242-0001-564 242-0001-512 242-0001-273 242-0001-683 242-0001-101 242-0001-183 242-0001-105 242-0001-154 242-0001-623 242-0001-621 242-0001-221 242-0014-174

Reference R92 R93 R98,99,110,122,124 R107,108,113,114 R112 R117 R118 R121 R128 RN1

Description 3.3K 1/4W 5% 240K 1/4W 1% 47K 1/4W 5% 120K 1/4W 5% 39K 1/4W 5% 200K 1/4W 5% 82K 1/4W 5% 12K 1/4W 5% 4.7K 1/4W 5% Resistor Network 100K x 9

CPI Part # 242-0001-332 242-0015-240 242-0001-473 242-0001-124 242-0001-393 242-0001-204 242-0001-823 242-0001-123 242-0001-472 242-0117-104

POTENTIOMETERS R38,39 R63 R75 R76,89,96 R80

1K Multi-turn Vert Adj 250K Single turn Vert Adj 5K Single turn Vert Adj 25K Single turn Vert Adj 10K Single turn Vert Adj

242-0104-102 242-0101-254 242-0101-502 242-0101-253 242-0101-103

INTEGRATED CIRCUITS U2,3,7,10,13,14 U4,5 U6,9,11 U12 U15 U16 U17

Quad Bi-FET Op Amp Audio Power Amp Quad Bilateral Switch Tone Generator Quad Low Power Op Amp Under Voltage Sensor Micro-Controller

420-L347-000 420-0380-000 420-4066-000 420-2035-000 420-0324-000 425-7757-000 425-1655-000

MISC. J2 (TR10) J2 (TR20) J3 J4 L1, L2, L3, L4 V1, V2, V3, V4 S1 (TR10) S2 T1 Y1

Handset Jack Desk Mic Jack Mod Jack Bottom Entry Header Shrouded 26 Position 150uH Choke MOV ERZC05DK 330 26V Hook Switch 8Position Dip Switch Transformer Audio 600:600 Crystal 4Mhz

228-0041-010 228-0041-186 228-0041-026 228-0101-001 232-0000-150 242-0119-241 244-0100-009 244-0002-008 246-0100-003 258-0002-002

TR series Top PCB #700-00FP-200 revision C

D1,D3

LED Green Dot

D2

LED Red Dot

R1

10K Volume Pot

LS1

8 Ohm Oval

S1,S2,S4

Push Button Switch, Black

S3

Push Button Switch, Red

X1 (DR10 & DR30)

Electret Microphone

X1 (DR40)

Gooseneck Microphone

26 position cable assembly

214-0005-002 214-0003-001 242-0115-103 234-0001-004 244-0030-000 244-0030-002 234-0002-004 234-0003-003 600-0TSR-025

7

PCB View – Control Panel #700-00FP-200
Component Side
R1 LS1 JP1
D1 S4
J1 D3

FRONT PANEL 700-00FP-200
REV C

X1

S2

D2

C 1993 CPI

COMMUNICATIONS

S3 S/N

S1

J1 D3 S4
D1 JP1
R1 LS1

REV C 700-00FP-200 FRONT PANEL

X1

S2

D2

C 1993 CPI

COMMUNICATIONS

S/N S3

S1

Solder Side 8

A

B

C

D

E

LS1

THIS PART IS

SPEAKER

LOCATED

4

OFF-BOARD.

X1

ORG

BLK

WM54BT

FRONT PANEL MIC

THIS PART IS

LOCATED

R1

OFF-BOARD.

WHT GRN

10K POT

J1

3

VIO

1

2

3

4

5

6

7

8

PTT

9

10

11

12

13

14

VCC

S1 KS11R9
MONITOR

S2 KS11R9
INTERCOM

D3 LED GRN

15

16

17

18

19

20

21

22

23

24

D1 LED GRN

D2 LED RED

S4 KS11R9
F1 / F2

S3 KS11R3
PTT

F2

25

26

F1

PTT

CON26A

2

JP1

PTT 5

4

ENCODER INPUT

3

1

2

1

VCC

HEADER 5

A

B

CPI Communications, Inc.

1

Title
Control Panel – DR, LE & TR Series

Size A

Document Number

Rev C

Date: Monday, September 18, 1995

Sheet 1

of

C

D

E

9

PCB View for Main PCB #700-LEBB-200, Rev. C

C5

CPI COMMUNICATIONS,INC.

C 1994

R50

R55

U8 C45

C46 C47

C29

C1 Q1 C2

U1

R24

C18

R1
C3
R2 R3 R4 R5 R6
Q2 C6

C4

D3 R7
R8 U2

R26 R27 R28 R29
D4
R30 R31 R32 R33

D1
D2 C7
R9

C8
R10 C9
R11

S1
R34 R35 R36
R 37

R12

R13

R14

C10

U3

J2

R15

NO W NC
C23 C24

C22

R51
R25 C19 R53

R52

R56

C30

R57 R58 R59

C20 R54

C21

T1

R60

R61

C31

R62
U9

D7
D8 F1 D10
C48 C51

Q4 R97
C49

JU1 JU2 JU3 JU4

C32

C33 C34

J3 R63

T2

R81

C35

V1
C64

L1

C65

L2

V2

L3

V3

R82 R83 R84 R85 R86 R87
R88

C67

L4 C66 R76

V4

C52 Q5

R99 R100
R101

U10 D12

R102 R103
R104

C53 U16

C50 U15

D9 D11
R98
U17

TB1

Q6
Q7 Y1
R112

R122 R123 R124 R125

RN1

C61

R105 U12

C25 C37 C43 JU5 C44

JU8

J1

C11

R17

R16

C12

R18

R19 U4

R41

R38

C36

R39

R40

R127

C40

C39 C38
R64
R65 R66 R67

R77 R78
R79

R89 R90
S2

C55

U11 R106 R107
R108 C56

JU7

R128 C58 Q8

JU9 R113
R114

C54

C14 C13 C15

R20 R21

R22

C16

R42 C26
R23

C27

U6

C41

R126

R74

R68 R69 R70
R71 R72 R73

U7 R91

U13

C42

R92 R93 R94

R95

C57 U14

C59

R119

Q9
R115 R116 J4 R117 R118 D13

R47

R120

Q3

C17

R43

C28

R44 R45

U5

R46

R49 D6

D5 R75

TR SERIES

JU6

R80

R96

700-TRBB-200

R109 R110

R111

REV C

S/N

R121

C60

Q10 Q11

C62 C63

10

1

2

3

4

5

6

7

8

R99

U10D

12

14

47K

13 –

VB

F1

D8

Q4 MJE520

VCC

R98

C49

LF347

47K

2.2uF

C48

C52

.1uF

100uF

+ –
+ –
+ –
+ –

TB1

A

1

2

3

1 AMP

VOL HI

VOL LO

SPEAKER HI

MONITOR SWITCH

INTERCOM SWITCH

F2 LED

B

ENCODER INPUT

SCK

SID OUT

LATI

SID IN

SPEAKER LO

D10 D11

D9

R97

1K

C47 1000uF

C45 220uF

J4

1 3 5 7 9 11

2 4 6 8 10 12

VOL WPR PANEL/BOOM MIC
PTT LED PTT
F1/F2 SWITCH F1 LED

13

14

15

16

17

18

19

20

21

22

VCC +10 +5 8 AUX

23

24

25

26

CON26A

D7 1N4746

C46 220uF

R119 1K
R118
82K D13 1N4735A

R89

RX INPUT

25K POT

3

1

R62

U10B

6

7

27K

5

LF347

VB

R117 200K

R116
10K
U14A 2
1 3
LF347
C58 2.2UF

+5

R115 10K

Q8 2N2907

Q9 2N2907

C57 100uF

INSTALL FOR

FULL DUPLEX

JU5

(2 PAIR)

SOLDER JUMPER

U9B

4066

11

10

U14B

5

7

6 –

LF347

R121

R120 10K

12K C59

.01uF

RX AUDIO

VCC

Q10 2N2222

Q11 2N2222

R111

2.7
C60 .1uF

A
+10
C50 100uF

B

12

13 2

L4 RED
150uH
C
C67 .01

C65

L2

.01

J3

GREEN

2

1

150uH

4

3

6

5

L3

BLACK

MOD JACK

150uH

BOTTOM

ENTRY

C66

.01

D

C64

L1

.01

YELLOW

150uH

1

2

C32 4.7uF 100V
V4 ERZ-C05DK330
V2 ERZ-C05DK330
C33
4.7uF 100V 4.7uF 100V
C34
V3 ERZ-C05DK330

INSTALL JU1 & JU3 FOR HALF DUPLEX (1 PAIR)
JU1

1 T1 8

4

5

600:600

SOLDER JUMPER R61 R61 INSTALLED 620 FOR -FD OR -4W
JU3

1 T2 8

SOLDER JUMPER
JU2 SOLDER JUMPER
INSTALL FOR FULL DUPLEX VB (2PAIR)

V1 ERZ-C05DK330
C35
4.7uF 100V

4

5

600:600

SW1

1

16

U11A

4066

R88

1

2

620

CONTROL 3

R81
10K
U10A 2
1 3
LF347

BALANCE ADJUST
25K POT
R82
1K R83
150K C51 2.2uF

VB

3

4

5

3

1

CONTROL 1

C43

R86

180pF

27K

U10C

R85

9

8

10

VB

62K

LF347

R63

R87

250K POT

R84

3

1

620

18K

2

MOD OUT

R76 2

APC DA1561
|LINK |SHEET2.SCH |SHEET3.SCH |SHEET4.SCH
6

C44 ENCODER INPUT
.1uF CONTROL TONES
C
TX AUDIO

VCC

VDD

GND
CPI COMMUNICATIONS, INC.

VSS

VEE

D

Title
Size B
Date:

TR SERIES TONE REMOTES Document Number
Friday, January 03, 1997
7

Sheet

1

of

8

Rev C
4

1

VCC
A

VDD GND
MONITOR SWITCH C55 .01uF

2

VSS

VEE

R107

120K

5

1

6

1

7

1

8

1

3
+10

10

9

S1

+5

SHOWN OFF-HOOK

HOOK SWITCH

PTT
C56 .01uF

R108 120K

INTERCOM SWITCH
B

R114 120K

AUX

8

F2 LED

R123 Q6
1K 2N2907
JU7

+10 R122 47K

4 2

1

SOLDER JUMPER

SOLDER JUMPER F1 LED

R125 Q7
1K 2N2907

+10 R124

JU9
R113 120K

C

JU8

47K

F1/F2 SWITCH

SOLDER JUMPER

R128 4.7K

R104 +10

10K

R103

D12

PTT LED

Q5

2N2907

10K

1N4148

R102

1K

AUX PTT LED

U13A

2

CONTROL 4

1

D

3

+7.5

LF347

CONTROL 5

U14C

10

8

9 –

+7.5

LF347

1

2

3

+ –
+ + –
+ –
+ –
+ + –
+ + –

2

1

3

1

4
100K X 9 RN1C C53 .1uF

5
R112

39K

U16
TL7757 1 RST

+V 2

+10 +10

GND 3

4

28 MCLR 2 VDD

U17 +5

22 RC4 23 RC5 24 RC6 25 RC7 18 RC0 19 RC1 20 RC2 21 RC3 17 RB7 15 RB5 16 RB6

RB2 12 RB3 13 RB4 14 RB0 10 RB1 11
RA0 6 RA1 7 RA2 8 RA3 9

CPIMICRO2 1 RTCC 4 VSS

CLKOUT 26 OSC 27

Y1

SW7

7

10 +10

R105 +5
100K

+10

6

+7.5

R100 100K

R101 +5
100K

U15B 6
7 5
LM324
U15A 2
1 3
LM324

U15D 13
14 12
LM324
U15C 9
8 10
LM324
U14D 13
14 12
LF347

7
CONTROL 1 CONTROL 2 CONTROL 3

8 A
B

5 12

C61 20pF

4.0MHZ

C62 +5
20pF

SCK SID OUT LATI SID IN
CONTROL TONES
4

2 SCK 3 SID 4 LATI
C63 10pF

VDD 7 CLK 8

1 VSS 5 VCC

U12

VOUT

C54 6
.033uF

ML2035

R95

10K

R106 10K

U13C 9
8
10

LF347 VB

+5

3

4

U11C 4066

R91 17.4K

C

10

11

U11B 4066
R93

240.0K

8

9

R109

100K
U13B 6
7 5
LF347

R110 47K VB

5

1

3

R80 10K POT 2 TONE LEVEL
VB
6

U13D

R92

13

14

12

3.3K

LF347

SW8

R94

VB

7.32K

D

CPI COMMUNICATIONS, INC.

Title
Size B
Date:

TR SERIES Document Number
Friday, January 03, 1997
7

Sheet

2

of

8

Rev C
4

1

2

3

4

5

6

7

8

C8

A

PANEL/BOOM MIC

DESK MIC BIAS

R40
3.9K
C36 100uF

HANDSET/DESK MIC HI

B

C41
.01uF R69 10K
R68
100
R64 5.1K
C40
.1uF

R70 3.9K
VB
R65 27K

REMOVE FOR INCREASED PANEL/BOOM MIC GAIN

JU6

R47

SOLDER JUMPER 560K C42

47pF

R74

1M

VB

U7B

5

7

6 –

LF347

SW2

R66

2

15

68K

R67

68K

VB

U7A

3

1

2 –

LF347

RX AUDIO

CONTROL 5

6

R126

9

8

18K

U6D

4066

SW3

3

14

SW4

4

13

U6A

R127

4066

1

2

18K

CONTROL 4

CONTROL 3

5

1

MIC LEVEL

R75 R49
2 1K
5K POT
VB

3

CONTROL 2

6 13

NOTE: U6 IS REMOVED ON TR20, TR30 AND TR40

TX AUDIO

9

8

U9D 4066

3

4

470pF R10

100K

R37

C9

C7

R9

10K

.47uF

.1uF

10K

U2B 6
7
5

LF347 VB

U9C 4066

R36 1K
R7

Q2

1K

2N2222

VB

U2A

3

1

2 –

LF347

+ +
–

R34

100K

R35

U2C

9

8

10K

10

LF347 VB

R8 1.8M

D1
1N4148
C6 1uF

C24
.033uF R32 1K

C22
.033uF
R30 6.8K

C5

VB

1uF

D2 1N4148

C23
.033uF
R31 220K

R33

1.2K

U2D

12

14

13 –

COMPRESSOR OUT

LF347

A

VB

FD PATH
C25
2.2nF R11
10K U3D
13 14
12 LF347
VB

1

3

R38 1K POT
2

R12
10.0K
U3A 2
1 3
LF347

–

R18 10.0K

2

R13

3

1

6.81K
R14 10.0K

C10
.01uF 1% U3B 6
7 5
LF347

–

R39 1K POT .01uF 1%
R15
7.32K

R16

C11

44.2K

B

U3C 9
8
10

–

R19 44.2K

LF347 VB

SOLDER JUMPER

+ –
+ –

INSTALL FOR FULL DUPLEX (2 PAIRS)

VB

R17

10.0K

1

VCC

CONTROL 1

U9A
4066 13
JU4

C39 BEEP INPUT
.1uF

C

SPEAKER HI

R43 2.7

C28 220uF
8

14

U5 LM380 2 + 6 –

7

1

R44 2.7
C17 4.7uF

VCC
C27 .1uF
R41 2.7

C16 .01uF

AUX INPUT 2

2

VB

R78

R72

10K

R96

3

R79

EARPIECE

R77

ADJUST

U6B

18K

4066

R71

U7C

+ –

10K

2

11

10

9

R73

C38

10K

8

EARPIECE

100K

10

U7D

25K POT

100

22uF

13

1

LF347

C37

14

VB

.1uF

12

VB

12

C

LF347

CONTROL 4

C14 .1uF
R20 100K

VB
R42 100K

C15
.01uF R21 22K

R23
100K R22
10

5

SW6

6

11

U6C

4066

4

3

VOL HI VOL WPR

+5
AUX PTT LED AUX INPUT 2 VOL HI BEEP INPUT COMPRESSOR OUT
VCC

J1
1 2 3 4 5 6 7 8 9 10
CON10

SPEAKER LO

C12 220uF
C26 8
220uF NP

14

U4 LM380 2 + 6 –

R45 2N2907

Q3

10K

R46

10K

D6 1N4148

CONTROL 5

VOL LO

5

7

1

D5

D

1N4148

R90 220

SW5

D

C13 4.7uF

12

VB

VCC

VDD

CPI COMMUNICATIONS, INC.

CONTROL 1

Title TR SERIES

GND

VSS VEE

Size

Document Number

Rev

C

Date: Friday, January 03, 1997

Sheet

3

of 4

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

C4

470pF

A

FD PATH

R4

100K

R6

C1

C3

R3

10K

.47uF

.1uF

10K

U1B 6
7
5

LF347 VB

+ +
–

R28

100K

R5

U1C

9

8

10K

10

LF347 VB

C20
.033uF R29 1K

C19
.033uF
R27 6.8K

C18
.033uF
R26 220K

R25

1.2K

U1D

12

14

13 –

LF347

R2

1K

C21

U1A

D3

1uF

VB

R24

3

1

B

Q1

1K

2 –

1N4148

R1

D4

B

2N2222

LF347

1.8M

C2

1N4148

1uF

VB R53

10.0K

2

C31

R50

3

1

2.2nF R59

6.81K R52

R56

C30

1K POT

R58

C29

44.2K

.01uF 1%

3

10K

10.0K

.01uF 1%

U8C

R51

U11D

U8D

R57

9

–

C

4066

TX AUDIO

8

9

U8B 6
7

–

2

R54 1K POT

U8A 2
1

–

R55 14

–

13 12

7.32K

8 10

44.2K

C

5

3

10.0K

LF347

VB

LF347

1

LF347

VB

6

CONTROL 2

VB

R60

10.0K

D 1

J2 2 1 4 3 6 5
MODJACK 6
BOTTOM VIEW

DESK MIC BIAS HANDSET/DESK MIC HI PTT EARPIECE
MONITOR SWITCH

2

3

4

+5
AUX PTT LED AUX INPUT 2 VOL HI BEEP INPUT COMPRESSOR OUT
VCC

J1
1 2 3 4 5 6 7 8 9 10
CON10

5

6

VCC

VDD

GND

VSS

VEE

D

CPI COMMUNICATIONS, INC.

Title
Size B
Date:

TR SERIES Document Number
Friday, January 03, 1997
7

Sheet

4

of

8

Rev C
4

Location of externally adjustable controls.

R89 RX Input
Dip Switch R96 Earpiece Adj.

Model # Serial # Assembled by Tested by Packed by
COMMUNICATIONS, INC. 1186 COMMERCE DRIVE, RICHARDSON, TX. 75081 214-437-5320 800-869-9128 FAX 214-437-5360

Mod Jack
R63 Mod Out R75 Mic Level

15

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 is delivered by the customer to our authorized service center intact, with all transportation charges pre paid within 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.
This warranty does not extend to any of our products which have been subjected to misuse, neglect, accident, incorrect wiring not our own, improper installation, or to use in violation of instructions furnished by us nor extended to units which have been repaired or altered outside of our factory or authorized service center, nor to cases where 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:
16