WAM-520 小型可调式调制主机使用说明书 - ditel-telecom.PDF

THE NAME YOU CAN COUNT ON WAM-520 Mini Agile Modulator OPERATION INSTRUCTION I.SPECIFICATION RF Frequency Range : PAL-B/G 48 to 860 MHz; PAL-D/K 48 to 860 MHz NTSC 54 to 860 MHz Output Level : + 45 dBmV (minimum 15dB adjustment range.) Output Impedance : 75 Ohms A / V Ratio : Audio carrier level, adjustable from -9 ~ -30dB Referenced to video carrier level. Frequency Stability : ± 5KHZ Intercarrier Frequency : PAL-B/G 5.5MHz ± 5KHZ PAL-D/K 6.5MHz ± 5KHZ NTSC 4.5MHz ± 5KHZ Spurious Outputs : -60 dBc typical , measured at 15 dB A/V ratio and with Modulator output level of + 45 dBmV. C/N : 60 dB Typical VIDEO Input Level for 87.5% : 1 Vp-p. Manual gain adjust with front panel control. Modulation Input Impedance : 75Ohms Frequency Response : ± 1 dB (Within 5MHz) S/N : 60dB Typical AUDIO Input Level for 25 KHz : 140 mVrms. Manual gain adjust with front panel control. Peak Deviation Input Impedance : Greater than 10 K Ohms , unbalanced. Pre emphasis : PAL-B/G 50 µSec. PAL-D/K 50 µSec. NTSC 75µSec. Frequency Response : ± 1 dB ( 40Hz to 15 KHz ) GENERAL DC Power Input : +12V ± 5% at 160 mA typical, 180 mA maximum. +5 V ± 5% at 460 mA typical, 480 mA maximum. Operating : 0℃ to + 50 ℃ ambient. Temperature Size : 1”W * 3.5”h * 7.5” d (2.5cm)W * (8.9cm) H * (19.1 cm )*D. Weight : 0.3 Kg II.FRONT PANEL REAR PANEL