Hiện tại bên mình có một Clearcom Camera Interface IF4-W-4 nhập cho dự án nhưng còn thừa, hàng vẫn còn mới tinh chưa qua sử dụng có đầy đủ giấy tờ nhập khẩu.

"4-Channel 3- or 4-Wire Camera Interface Rack Mount (1RU), provides 4 discrete Clear-Com to 3- or 4-wire interface circuits

Four channel interface connects Clear-Com to TV cameras, two-way radios, satellite links, and other communications devices through either their headset jacks or 4-wire circuits. IF4W4 has selective partyline capability. Features individual transmit, receive, and null controls, as well as transmit level indicators. Switchable mic or line-level output for compatibility. The built-in test jack and test tone provide quick nulling.
Technical Specifications
Clear-Com Format

Program Line Input
Input Impedance : >= 1KΩ

Partyline Output
Output Impedance: >10KΩ

Stage Announce/Balanced Line Out
Type: Balanced
Output Impedance: >= 80Ω
Load Impedance: >= 600Ω

Frequency Response
Program Input - Partyline: 200 - 18KHz ± 3dB
Partyline - Line Out: 200 - 18KHz ± 3dB

Max Distortion
Program Input - Partyline: <= 0.2%
Partyline - Line Out: <= 0.5%

Noise
Program Input - Partyline: < -85dBu
Partyline - Line Out: < -60dBu

Max Gain
Program Input - Partyline: >= -16dB
Partyline - Line Out: >= 24dB

Min Gain
Program Input - Partyline: <= -20dB
Partyline - Line Out: <= -45dB

Line Out LED Threshold
Green: -7dBu ± 2dB
Red: +5dBu ± 2dB

Partyline LED Threshold
Green: -10dBu ± 2dB
Red: 0dBu ± 2dB

Power
Input Voltage Range: 20-30 VDC
Input Current (Idle): <= 40mA
Input Current (Max): <= 50mA

Rear Panel Connectors
Intercom: (4) XLR-3F (1 per channel)
4-Wire Terminal Block Connectors: (4) Connectors (1 per channel)
4-Wire Transmit Level Switches: (4) Switches (1 per channel)

Front Panel Connectors
Headset: (1) XLR-4M
TS1 Earphone: (1) 3.5mm Jack Socket

Front Panel Controls & Indicators
Green Level LED: (4) LEDs (1 per channel)
Red Level LED: (4) LEDs (1 per channel)
Link LED: (4) LEDs (1 per channel)
Power LED: (4) LEDs (1 per channel)
Null Test Button: (4) Buttons (1 per channel)
Receive Level Adjust: (4) In controls (1 per channel)
Transmit Level Adjust: (4) Out controls (1 per channel)
Nulling Adjust: (12) Null controls (3 per channel)
Channel Link Switch: (3) Link switches (A+B, A+C, A+D)

Environmental
32 - 122˚F (0 - 50˚C)

Dimensions
19 in. W x 1.75 in. H x 7.75 in. D
(483 mm x 44.5 mm x 197 mm)

Weight
5.83 lbs. (2.65 Kg)
"





đây là link sản phẩm: http://www.clearcom.com/product/par...arcom.com/product/partyline/interfaces/if4w4/
Giá: 20 tr có fix
Liên hệ:
Mr Quyết
Địa chỉ: Hai bà trưng, hoàn kiếm, Hà Nội
ĐT: 0977-6I2-6 năm sáu

Tag:
IF4W4 , Clear-Com, Partyline, Digital Matrix,Camera Interface IF4-W-4, IF4-W-4 ,
Clear-Com IF4W4 Datasheet , interface , camera , IF4W4 , 4-Ch 3/4 Wire Camera Interface , Clear-Com/USA ,