60-channel telephone transmitter
Negotiable /Set
Min.Order:2 Sets
Shenzhen Tianbo Communication Equipment Co., Ltd.
Technical parameters Optical fiber interface (single/double fiber), Wave length: 1310nm single-mode 1550nm /, 850nm multimode 1310nm / Optical fiber: multimode and single-mode Sending power: - 9dBm / - 5dBm Length: transmission mode 2 kilometers, 40, 60, single 120 kilometers Receiving sensitivity: superior 37dBm - (BER) < e - 11. Receiving the dynamic range: > 27dB Even after way: FC Telephone interface board - user interface and the loop speech interface: words and characteristics of telecommunications equipment with the telephone exchange total technical specifications" A) resistance against Ω 600 B) insertion loss: - 3 ± 0.75 dB C) the frequency characteristics: 300 ~ 0.6 ~ 3400Hz (3dB) - D) balance weight than dBmop 6.37 murmurs: E) crosstalk attenuation: 65dB acuity F) subscriber line loop resistance: less than Ω 3K (including unit) G) feeder voltage: volt, H) feeder current 50mA; 20 ~ : I) : AC90 15V minus the bell Ethernet interface interface rate: support 10/100M adaptive access Transmission rate: support and transparent transmission 2M pure pure 10M, according to the user Actual need to choose Full-duplex mode: support half-duplex, full-duplex mode The physical interface: RJ45 Completely accord with standard IEEE802.3 LAN protocols | 2 / Four-wire audio interface A) resistance against Ω: 200 Ω 680 | | 0.1 muon F B) four-wire AD gain 14dB (adjustable) : C) four-wire DA gain: - 2 dB (adjustable) D) four-wire AD frequency characteristics: - 0.2-0.2 dB E) four-wire DA frequency characteristics: - 0.2-0.2 dB F) second-line AD frequency characteristics: - 0.2-0.2 dB G) second-line DA frequency characteristics: - 0.2-0.2 dB (adjustable) H) back 40dB: loss I) balance degree: 70dB C) common mode rejection ratio: 70dB K) power than 30dB: inhibition M) free channel noise: 65dB acuity F) ring resistance: Ω 600 V. 24 interface A) interface type: v. 24 asynchronous B) speed rate: 0 - Kbps amounts V. 35 interface A) interface type: v. 35 synchronization B) speed rate: Nx64Kb/s (N = 15), 1 - C) the clock: DCE can send across E1 standard interface, E1 interface itu-t g. 703, g. 704 Suggestions: A special rate than 2048Kbps: 50ppm ± B: HDB3) code C) interface impedance: 75 Ω D) interface characteristics: g. 703, g. 742 and g. 823 standards E) frame and structure: no frame structure Power supply: one 220V / - volt is optional |