INNER S.R.L. | DRAKE Stereo Encoder MMTS20

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.

. High quality, economical MTS stereo encoder

. Greater than 20dB stereo separation.

. Convenient front panel audio level control and indicator permit setting of proper audio levels.

. Front panel test tone switch allows easy calibration of stereo separation and minimizes installation time.

. Pilot lock indicator verifies that the encoder is properly synchronized.

. Modulators, rack mount and power supply sold separately.

MMTS20 Technical Specifications

Composite Output
Output Impedance:	100 Ohms, intended to drive high impedance audio input of paired A/V modulator.
Output Level:	10 mV/kHz, ±10% 1.1 Vp-p for a 100% modulated signal
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 20K Ohms, unbalanced
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.)