Gdm-007 analog modulator
MATCM-45
The MATCM-45 is a microprocessor controlled rebroadcast quality,phase locked loop synthesized, frequency agile CATV/TV television modulator. The double conversion and superior SAW filtering provides adjacent channel compatibility and spurious free output. The MATCM-45 provides 45dB output level from 50 to 864MHz in-cluding CATV and TV frequencies. The channelization configuration can be changed by the up/down buttons located on the front panel.
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| Place of Origin:Guangdong,China | |||
| Model Number:GDM-007-2(MATCM-45) | |||
| ITEM | TYPICAL | Q.C.LIMIT | TEST CONDITIONS |
| RF OUT | |||
| Frequency Range | 54 - 864 MHz | ||
| FCC Frequency Offsets | Automatic | +12.5KHz, +25KHz or None as required for each channel +12.5KHz : CATV CH14-16 CH25-41 CH43-53 +25KHz :CATV CH.42 CH98-99 | |
| Output Channels | CATV:CH.2 - CH.135 TV(VHF)-CH.2-CH.13 (UHF).CH.14-CH.78 | ||
| Output Level | +45 dBmV Min. | ||
| Output Level Control | >10 dB | ||
| Output Impedance | 75 Ohm | ||
| Picture Carrier Frequency | 65 KHz | ||
| Inter - Carrier Frequency | 65 KHz | ||
| P/S Carrier Ratio | -11 - -30dB Min. | ||
| Adjacent Channel Beat(-4.5MHz) | -60 dB Min. | Over gain control range | |
| Passband Flatness | 61.5 dB P/V Max. | ||
| Spurious- | @Output Level Set 45dBmV | ||
| In Band | -60 dB Min. | A/V Ratio@-l5dBc | |
| Out of Band | -58 dB Min. | @ 54 — 864 MHz | |
| Channel Selectivity | A/V Ratio @ -15 dBc | ||
| Fv - 6.00MHz | 55 dB Min. | ||
| Fv -3.58MHz | 55 dB Min. | ||
| Fv -2.42MHz | 55 dB Min. | ||
| Fv -1.50MHz | 55 dB Min. | ||
| Fv-1.25MHz | 30 dB Min. | ||
| Intermodulation Distortion | 57 dBc Min. | Visual carrier @45dBmV | |
| 3 Tone 920 Beat | Aural carrier @-15dBc Fa +3.58MHz @-17dBc | ||
| Residual FM | <2 KHz | Peak deviation @10KHz span | |
| CARRIER / NOISE | 60dB Min. | ||
| Output Return Loss | -3 dB Min. | @54 — 864MHz | |
| IN PUT | |||
| VIDEO | |||
| Video Input Impedance | 75 ohm | ||
| Max Video Depth of Modulation | 87.5 % Min. | Input level 0.8Vp-p | |
| Video Input @87.5% Modulation | 1+0.4 , -0.3 Vp-p | ||
| C/L Delay Differential Gain | 0±50 nsec | Video 87.5% modulation, Test signal with TSG95 NTSC NTC7 cmpst. Video J87.5% modulation, | |
| Differential Dhase | ≤5° | Test signal with TSG95 NTSC NTC7 cmpst. Video 87.5% modulation, Test signal with TSG95 NTSC NTC7 cmpst. | |
| Video Input Return Loss | -18 dB Min. | To 4.2MHz | |
| AUDIO | |||
| Audio Input Impedance | 10 Kohm | Unblance | |
| Audio Deviation | 260mV RMS Max. | @±25KHz PK iv/800Hz tone | |
| Audio Pre-emphassis | 75 u Sec | OF/OFF Switch Selected | |
| GENERAL | |||
| Connector Type : VIDEO IN/RF OUT | F TYPE | ||
| : AUDIO IN | RCA TYPE | ||
| DC Power Inpu-t | |||
| +12V / 280mA | ±0.2 VDC | ||
| +5V / 400mA | ±0.2 VDC | ||
| Operating Temperature | @ O℃ To +50℃ | ||
| Size | W(2.5CM)*H(8.9CM)*D(21.5) | ||
| Weight | 0.38Kg | ||
