Truly a multi functional unit, the msi-3300 television audio processor offers analog and digital inputs and outputs. MSI 3300 is a "smart" processor, designed for broadcasting.
Setup is a snap and the 3300 offers superb, wide, dynamic gain riding and limiting at affordable prices.
The MSI-3300 Conditions audio for transmission in any medium:
Cable modulators
Satellite uplinks
Fiber modulators
STL’s and other microwave channels
Aural transmitters
Cable stereo generators
Perceptional coders, such as MPEG and Dolby AC3 and E.
Telco lines
Behaves like a human operator
The built-in automatic gain riding feature enhances as well as reduces gain in your audio, depending upon the program content. During consistent programming, 3300 levels out the varying audio levels, during silence the 3300 freezes the gain, it can also sense dramatic fades and allows them and doesn't track slow fades into the noise floor. It's like having an additional audio operator.
TV Program Material Varies
The varieties of audio are endless. In order to process them all, an operator has to continually switch the audio or you can use an MSI-3300 and it will do the job for you.
Cable and Satellite Feeds
Ideal for a Digital/Analog Dual Mode Station
Simple Set-up
Front Panel Display
Front Panel Controls
Internal Controls
AGC Gain Reductions and Enhancement
High Frequency Limiting
Left/Right Correlation
Alarm - Input Polarity Reversal
Left & Right Inputs
Analog and Digital Inputs and Outputs
Simultaneous Analog and Digital Outputs
AC MAINS
Input Power:
22VA, 115 VAC
Operating Range:
108-122/216-244 VAC, 50/60 Hz
INPUTS
Analog:
Nominal input level (APL): -24 dBu, minimum
Impedance: 600 Ohms as shipped, balanced 30K (internal option), balanced
Maximum output level (peak): +18 dBu, +18 dBm/600 Ohms
Adjustment range: 20 dB
Source impedance: <50 Ohms, balanced & floating
Connectors: XL-3 Male
Digital:
Format: AES3-id, transformer coupled
Sample rate: 48 KSPS
Word length: 24 bit
Connector: BNC
GAIN CONTROL
Overall static gain (ctl off):
Analog: Adjustable
Digital: 10.6 dB
Processing gain with respect to static gain: +10 dB max -10 dB min indicated approx -20dB possible
Assumed digital APL: -16.4 dBFS on input
Range of threshhold adjustment: 3dB
ADAPTIVE PRE-EMPHASIS CONTROL (This is an internally jumper selected control option.)
Time constant:
75 microseconds
Inflection frequency of control:
Variable
Range of threshold adjustment:
0-6dB above wideband
FIXED OUTPUT DE-EMPHASIS (This is an internally jumper selected option.)
Time constant:
75 microseconds
METER INDICATIONS
Input:
L only with 10dB peak marker R only with 10dB peak marker L&R together
Output:
L only with +10dBu marker R only with +10dBu marker L&R together
Level matching:
Log peak of Input (L-R) Log peak of Output (L-R)
Wideband AGC:
Operating gain over range of +10 to —10 dB
Adaptive pre-emphasis (HFL):
High frequency gain (15kHz) From 0dB to approx —17 dB
Messages:
HFL not enabled Digital input selected Pre-emphasis enabled
Alarm:
Input polarity reversed
MECHANICAL
Mounting
EIA 19" rack, 1U high
Depth
16"(406mm) plus connectors
Weight
Approx 6 kg (13 lbs)
ELECTRICAL PERFORMANCE Frequency Response
Digital input to Analog or digital output:
+/-0.5dB, 30Hz-14kHz
Analog input to Analog or Digital output:
+/-0.5dB, 50Hz-14kHz
Analog input high-pass filter:
-3dB at 30 z/18dB/oct (The HPF can be bypassed)
Notes: The unit incorporates a 15.7kHz notch filter and BTSC system alias protection
LPF. These filters are always present in both the analog and digital input paths
The same tolerance is met when the HFL is engaged along with the fixed output de-emphasis option, with control off. With
control on, the input level must be reduced below the HFL theshhold, in which case the tolerance is also met.
With HFL engaged and no output de-emphasis, the 75usec pre-emphasis is accurate to a smaller tolerance (typically +/-0.2
dB), with control off or at level below HFL threshold.
(THD+noise):Either input to Digital output at -1dBFS <0.1%,
30Hz-14kHz
Either input to Analog output at +10dBu <0.1%, 30Hz-14kHz
Crosstalk: Analog inputs to either outputs >50dB, <10kHz
Digital inputs to either outputs >55dB, <10kHz
Output noise: Either inputs to Digital out -83dBFS
Either inputs to Analog out -72dBu
