HAMTRONICS DVR-3 Скачать руководство пользователя

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PLAYBACK

LATCH

P / R

EOM

TEST

RECORD

GND PULSE TO START PLAYBACK

END PLAYBACK

GND PULSE TO

GND TO

AUDIO

OUTPUT

VccD

VccA

VssD

VssA

AUX IN

ANA IN

ANA OUT

AF INPUT

AF INPUT REF

AF OUT+

AF OUT-

DIGITAL

RECORDER

N/C

KEY

SWITCH

+
_

AGC

R11

R12

C11

R10

C10

C12

R4 47K

R5 47K

CR2

RECORD

DVR-3 DIGITAL VOICE RECORDER MODULE

150K

4.7K

2N4126

BEAD

0.1UF

.001UF

0.1UF

15K

0.1UF

1UF

4.7UF

510K

22K

47K

AUDIO OUTPUT

ADJUST

R3 47K

47K

POWER FROM

C13
47UF

2N3904

1N4148

+5VDC BUS ON

COR-5 BOARD

+5VDC

PLAYBACK

RECORD

CONTROL

100K

R14

47K

R13

2N3904

SWITCH

2N3904

SWITCH

2N4126

CONTROL

100K

RCVR

AUDIO

(MARKED TRIP ON BOARD)

Содержание DVR-3

Страница 1: ...essed all as one unit However with the addition of some external addressing switches the 20 second capacity can be broken up any way you like into multiple messages Although switching cir cuitry to do...

Страница 2: ...parts are correct before sol dering Traces are close together so use a fine tip on the soldering iron All parts should be installed flush with the board Assembly Procedure Install and solder the part...

Страница 3: ...the wrong point if the resistor was inad vertently reversed when the COR 5 board was assembled Wrap the wire around the resistor lead and tack solder b Connect the brown playback control wire to the...

Страница 4: ...tal recording time is 20 seconds When you send the Record Voice Msg command the yellow TimeOut led will illuminate to indicate the DVR 3 is ready to record This led is used for convenience it does not...

Страница 5: ...ssed Because we are addressing in one second incre ments the highest practical ad dress is 19 seconds We mentioned earlier that there are other operational modes besides the addressing mode These are...

Страница 6: ...ace and internal precision reference clock This system uses eeprom technology to directly record analog signals so no d a and a d converters are required The 1020A ic uses a sampling rate of 6 4 kHz f...

Страница 7: ...le line is what actually starts each record or play back cycle It is held low to make the chip run The EOM line puts out a low sig nal under two conditions First when the playback mode reaches the end...

Страница 8: ...he regulated 5Vdc power bus on the COR 5 board Electrolytic capacitor C13 provides a low ac im pedance for the 5V bus on the DVR 3 board There are two separate 5Vdc busses on the DVR 3 board and separ...

Страница 9: ...output on the audio output pins 14 15 during record Q1 does not latch on as it does in playback mode Switching transistors Q4 and Q5 act as a buffer for the Record Con trol input from the Time Out le...

Страница 10: ...1 C3 Z1 CR2 S1 S2 C5 R2 R1 Q1 R3 C1 C6 R7 C9 C8 C4 C2 R4 R5 R9 C10 R10 C12 _ R11 Q2 COMPONENT LOCATION DIAGRAM DVR 3 DIGITAL VOICE RECORDER MODULE E6 E5 BREAK TRACE TO DISCONNECT GND TO MIC REF PAD R1...

Страница 11: ...AF INPUT REF 17 18 AF OUT AF OUT 14 15 X DIGITAL RECORDER N C Q1 E3 KEY Q2 SWITCH _ AGC 19 R11 R12 Z1 C3 C4 C5 R7 C6 C8 C9 E5 E6 C11 R8 R9 R10 C10 C12 C2 R4 47K R5 47K CR2 C1 R1 R2 RECORD DVR 3 DIGITA...

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HAMTRONICS DVR-3, Инструкции по сборке, установке и эксплуатации

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