MMTS20 Stereo Encoder
for Mini-Rack Modulators
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The R.L. Drake MMTS20 Stereo Encoder is part of the Drake Mini-Rack family designed to optimize rack space. The MMTS20 is an MTS stereo encoder which accepts left and right audio inputs and generates a composite BTSC format stereo signal. The composite signal is applied to the audio input of a compatible audio/video modulator . The modular design permits convenient pairing with a mini-rack modulator such as the VMM600, VMM806, or VMM806AG in a multiple unit rack configuration.
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| Composite Output | |
| Output Impedance: |
100 Ohms, intended to drive high impedance audio input of paired A/V modulator. |
| Output Level: |
10 mV/kHz, ±10% |
| Video Input | |
| Input Level range: |
0.5 Vp-p to 2 Vp-p |
| Input Impedance: |
High impedance, intended to be paralleled with paired A/V modulator. |
| Audio Input | |
| Input Level: |
250 mVrms to 2.5V. with front panel adjustment |
| Input Impedance: |
40K Ohms, balanced |
| Stereo Performance (Note: System performance is dependant upon paired modulator.) | |
| Stereo Separation: |
Greater than 20 dB |
| Frequency Response: | within ±1dB from 40Hz to 12.5KHz |
| Signal to Noise Ratio: |
greater than 65 dB |
| Total Harmonic Distortion: |
less than 0.25% |
| Spurious Subcarrier: |
-50dBc worst case |
| Test Tone | |
| Frequency: |
10.396kHz ±50Hz |
| Amplitude: |
0.5Vp-p ±10%; all output levels are calibrated to the level of this tone and it is used to set system audio levels for proper stereo operation. The paired A/V modulator audio response must be set for "Flat" operation (pre-emphasis defeated). |
| General | |
| DC Power Input: |
+12 VDC ±5% @ 150 mA |
| Operating Temperature: |
0° to 50° Celsius (32° to 122° Fahrenheit), ambient. |
| Dimensions: |
3.5 inches (89 mm) Height x 1 inch (25 mm) Width x 7.5 inches (191 mm) Depth |
| Weight: |
10.7 ounces (0.30 kg.) |
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R.L. Drake, LLC |
Sales: 937-746-4556 |
