The MSI-320 Precision Video Demodulator is a revolution in video monitoring. It provides advanced, accurate measurement and monitoring of visual and aural signals for TV and cable at a price that represents a fraction of what top-performing video demodulators usually cost.
Modulation Sciences documents the MSI 320's performance by a VM700 printout with each unit shipped. The msi 320 employs an original design by Modulation Sciences that maximizes performance and economy and provides full-features.
The MSI-320 features a Nyquist SAW filter, synchronous video detector, continuous all-channel tuning, a high-quality aural composite baseband output, non-intercarrier or quasi-parallel aural, and status alarms for sync, audio and RF. Its 1.2% differential phase and 1.2% differential gain are among the MSI 320's impressive specs.
The MSI-320 also features an easy-to-read, easy-to-set-up front panel display and menus. It carries the industry-unique Modulation Sciences three-year warranty on parts and labour.
Maximizes modern components
Modulation Sciences uses state-of-the-art integrated circuits that deliver performance, which used to be available only with complicated circuit boards packed with discrete components. Not only do today's advanced ICs cost a fraction of what the old discrete circuits did, but they are streamlined for performance, without the time-consuming--and often unstable--tweaks and fine-tuning that used to drive up manufacturing and calibration costs.
User-Friendly Menus - Easy to Read
Full Text Menus
Multi Language
Reliable and Versatile Operations
Single, Dual-Function Concentric Knob
Frequency Agile
Continuous Tuning
Impressive Performance
Zero Carrier Reference
Nyquist SAW Filter
Sound Trap
Additional Outputs for ICPM
Synchronous Video Detector
Sync Tip or Back Porch Clamping
High Quality Wideband Aural
Choice Of Aural Detectors
Transformer Balanced Audio
RS 232 Remote Control
Traceable Calibration
Status Alarms
Sensibly Priced Recalibration
3-year warranty
Parameter Selections
Input:
RF or IF 14
Channel:
Television Channels 2 to 62
Cable Channels 1 to 123
Channel Table:
Broadcast or cable tables
Channel Lock:
Locks channel and table
Headphone Volume:
200 steps, audio taper
Detector AGC Clamp:
Sync Tip or Back Porch
Aural Mode:
Split or Quasi Parallel
Display Language:
English, Spanish, or French
Display Brightness:
25%, 50%, 75%, 100%
Zero Carrier Pulse:
Line 11 - 36 or OFF
Box ID:
Unique Serial Data Address
Alarms
All alarms report on front panel display and output on serial data interface:
RF Too Low
RF Too High
Signal Loss
Visual Loss
Aural Loss
SAW Temperature Too High
SAW Temperature Too Low
Controls
Concentric rotary shaft encoders
2 channels, Menu (outer knob), Parameter (Inner knob)
Display
Vacuum Fluorescent
2 lines, 20 characters/line.
Remote Control
All front panel functions available via serial data interface. Up to 9 units can be daisy-chained.
AC Mains
100/120/220/240 VAC
50-60Hz, 50 VA ±10%
Fuse
1/2 Amp, slow blow (MDL) for 100/120 VAC
1/4 Amp, slow blow (MDL) for 220/240 VAC
Size
1 Rack Unit
1.75"H x 19"W x 14"D 44.45 x 482.6 x 355.6 mm
Aural
Outputs
Monaural Line
+10dBm (600 ohm) 25kHz deviation, 75 us deemp XL-3F connector
Specified video S/N ratio from -40 dBm to -10 dBm.
This range may be extended with an appropriate RF attenuator.
These characteristics are independent of input level from -40 dBm to -10 dBm, and channel
frequency.
Measured using SINE X / X, relative to North American M system pre-correction; 200 kHz
(reference) to 4.0 MHz, including ripple.
Video signal-to-noise ratio measured with aural carrier present.
Operation down to an RF input level of -48 dBm practical with some increase in video
noise.
The I & Q outputs have matched 800 kHz low-pass filters.
Measured with full field modulated ramp.
Balanced, transformer coupled.
Headphone output provided on switchboard quality tip, ring sleeve (TRS) three wire type phone
jack. Tip and ring sourced separately to drive both ears of stereo headphones. Either tip or ring may be shorted as
would happen with monaural headphones using a tip, sleeve (TS) two wire type phone plug.
Measured using a Modulation Sciences, Inc. STV-784 Television Stereo Generator and a Modulation
Sciences, Inc. SRD-1 Stereo Reference Decoder. All data gathered in BTSC Equivalent Mode, quasi parallel
detection.
0 dB reference = 55 kHz deviation.
In RF INPUT mode unit receives television channels. In IF INPUT mode, IF INPUT / OUTPUT BNC
connector switches from being an IF output to being an IF input. The entire RF input portion is disabled in IF INPUT
mode.
The serial data interface is modified to permit daisy-chaining up to 9 units on one circuit. Each msi
320 has a user assigned address code.
All units supplied with aural notch SAW filter assembly.
