Catv Agile Modulator

Technical parameter

RF

Adjustable peak deviation:        ±50 kHz

Output frequency:                45-870 MHz Agile

Pre-emphasis:                   50μs

Nominal output level:                ≥55 dBmV

Flatness (40Hz …15kHz):        ≤±1.5 dB

Output impedance:                  75Ω

Distortion(fm=1kHz; f=50kHz):   ≤1%

A/V RATIO:                         -10 - -20 dB

S/N ratio:                       ≥65dB

Carrier frequency tolerance:         ≤5 kHz

IF section

Carrier frequency distance tolerance: ≤100 Hz

Video carrier frequency: 38.9(B-G) 45.75(M-N) 38 (D-K)

Spurious in band:                  ≤-60 dB

Audio carrier frequency:33.4(B-G)41.25(M-N)31.5 (D-K)

Output level adjustment:             0 - -20 dB

Video carrier output level:         ≥30dBmV

Side-band Suppression:             ≥65 dB

Audio carrier output level:         ≥20dBmV

C/N ratio in channel:                 ≥65 dB

Input/output impedance:          75Ω

Video

Input/output return loss:           ≥12 dB

Input level:                         0.7-1.4 VPP

General

Input impedance:                    75Ω

Supply voltage:                  AC100-240V

Input return loss:                    ≥20 dB

Consumption:                   25 W

Modulation depth:                    87.5%

Operating temperature:           -10- +55°C

Differential gain:                     ≤4%

Video,audio connector type:       “RCA”

Differential phase:                    ≤4 o

IF and RF connector type:         “F”

Flatness in band:                     ≤±1.5 dB

Outside dimensions(h×w×d):     483×210×44mm

Cr/L delay:                          ≤40 ns

Packed weight:                   2 .5kg

Weighted S/N ratio:                   ≥60 dB

Audio

Input level:                                                   0.775V±10 dB

Input impedance (unbalance):                                      10kΩ