SPECIFICATIONS
CT-FMM
Fixed Channel Audio/Video Micro Modulator Specifications (Typical)
RF
1. Output Frequency
54 – 806 MHz. CATV Channels 2 – 125
2. Output Level
+50 dBmV typical
3. Output Level Range
20 dB Adjustable
4. A/V Ratio
-12 dB to -18 dB (± 2dB) Adjustable
5. C/N Ratio
60 dB typical
6. Broadband Noise
-78 dBc
7. Spurious Output
>60 dB
8. Frequency Accuracy
±25 kHz
9. Output Impedance
75 Ohms
10. Output Return Loss
12 dB
VIDEO
1. Video Input Level
0.7 Vp-p (Min.) @87.5% Modulation
2. Video Impedance
75 Ohms
3. Differential Gain
4.5% @87.5% modulator
4. Differential Phase
4.5˚ @87.5%Modulation
5. Video S/N Ratio
62 dB
6. Input Return Loss
20 dB
7. Flatness
±1 dB
8. Group Delay Response
Meets FCC group delay pre-distortion
requirements for color transmission
AUDIO
1. Input Level
0.35 V – 1 Vp-p for 50 kHz Deviation
2. Input Impedance
>10k Ohms
3. Flatness
± 1dB, 50 Hz – 5 kHz
4. Harmonic Distortion
<1%, 50 Hz – 15 kHz
GENERAL
1. DC Input Power
5V (400mA), 12V (150mA)
2. Operating Temperature
32 ˚F ~ 122 ˚F
MECHANICAL
1.Dimensions
1”(W)” x 3.5 (H) x 7.5” (D)
2.Weight
14 oz.
3
