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MODEL 210-01 CATV AUDIO/DATA DEMODULATOR

SECTION 1 GENERAL

1.1 Equipment Description - The Series 210-01 operates with 
standard CATV cable systems to provide a paging system by receiving 
the paging audio signal and a data control signal which determines if the 
paging message is intended for the location it is programmed for. 
Detected data is decoded to determine if the audio is intended for this 
location as determined by the location code selected by two BCD 
switches on the front panel. When the data matches the location code of 
this unit, it switches audio from an external audio source to the paging 
audio. A “Carrier Presence” LED , “Data Activity” LED, and “Power” 
LED indicates the operating status of the Series 210-01 . Connectors are 
RCA Phono plug for external audio in and switched audio out 
(unbalanced), F connector for CATV in, and 2.1mm power connector. 
Power is provided by a wall mount power supply.

       

FIGURE 1.1 210-01 Block Diagram and Chassis

 

MODEL 210

 

AUDIO / DATA DEMOD

 LOCATION CODE

 CARRIER

 POWER

CROSS TECHNOLOGIES, INC.

 DATA

55 - 300 
MHZ CATV 
INPUT 

CHANNEL 
CONVERTER

AUDIO 
DEMOD

DATA 
DEMOD

DE-
CODER

AUDIO 
SWITCH

AUDIO 
OUT

SELECT 
SWITCHES

EXT AUDIO IN

    210-01 manual Rev B 

Page 4

2/18/00

Содержание 210-01

Страница 1: ...o crosstechnologies com Data drawings and other material contained herein are proprietary to Cross Technologies Inc and may not be reproduced or duplicated in any form without the prior permission of...

Страница 2: ...210 01 manual Rev B Page 2 2 18 00...

Страница 3: ...products are warranted against defective materials and workmanship for a period of one year after shipment to customer Cross Technologies Inc s obligation under this warranty is limited to repairing...

Страница 4: ...the data matches the location code of this unit it switches audio from an external audio source to the paging audio A Carrier Presence LED Data Activity LED and Power LED indicates the operating stat...

Страница 5: ...requency Response 2 dB 50 Hz to 12 kHz Level 8 dBm PPL adjustable Impedance out 100 ohms unbalanced S N 50 dB Data Channel Characteristics Type AFSK Rate BER 9600 baud 10 6 Controls Location Code Two...

Страница 6: ...t derives DC from the wall power supply 12V unregulated See Figure 2 1 IF LVL REM GAIN ALARM FREQUENCY GHZ TUNE 8 1 3 3 2004 TEST UPCONVERTER CROSS TECHNOLOGIES INC 25 45 65 UP DOWN FIGURE 2 1 SERIES...

Страница 7: ...DC POWER AUDIO OUT RF IN J1 J3 J2 CROSS TECHNOLOGIES INC AUDIO LEVEL J3 RF Input The 50 to 300 MHz input This is a 75 F female connector at 20 to 70 dBm input level J2 Audio Out The switched audio ou...

Страница 8: ...el pot R47 to the desired paging volume 11 Using a small flat blade screwdriver CAREFULLY adjust the external audio level through the hole on the top back of the chassis 12 Note the proper pages reach...

Страница 9: ...To remove U10 and replace it with a new controller at a different frequency 1 Remove DC Power 2 Remove four 4 rear panel screws see Figure 2 1 3 Gently pull the backplane and PCB assembly completely o...

Страница 10: ...and U5A provide a 12 kHz lowpass filter for the audio signal and U5B is the output audio amplifier The demodulated FM signal from U1 U9 also goes to 21 31 kHz bandpass filter which selects the AFSK d...

Страница 11: ...es contain the bit assigned address of each 210 01 which is to enable and provide paging audio A1 A12 These twelve address bytes select 96 bit assigned addresses for control of the audio for each addr...

Страница 12: ...refreshes the tuner approximately every 30 seconds CROSS TECHNOLOGIES INC 6170 SHILOH ROAD ALPHARETTA GEORGIA 30005 Phone 770 886 8005 Toll Free 888 900 5588 FAX 770 886 7964 WEB www crosstechnologie...

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