Harris ATLAS ANALOGUE, Manual

Page: 29 / 134

7/26/05 888-2523-001 1-15
WARNING: Disconnect primary power prior to servicing.
Section 1 Introduction
ATLAS Analogue
Aural Specifications
Units Conditions Notes
Published Specification Value
Modulation Mode
F3E
Power Output %
Up to 10% of Visual peak sync
power
Carrier Frequency Stability Hz/month
+/- 150
Monaural
Input Connector At front panel
XLR, Female 5pin
Input Level
dBm 600 Ohms -6 to +16 on request 0 to +12
Nominal Input Level for 30kHz FM Deviation dBm f=500Hz 6
Input Impedance Ohms
Balanced
600 Ohms / >10k Ohms
switch selectable
Input Return Loss dB >30
Common Mode Rejection dB
40 to 300Hz/ up to 15kHz
>46 / >30
Modulation Capability kHz +/-120
FM Signal-to-Noise dB
Measured at +/-25 kHz deviation, 75 uS de-
emphasis (System M). +/-50 kHz deviation 50 uS de-
emphasis (System G)
>64 weighted
Exciter Spec.
>60
AM Signal-to-Noise (Residual Amplitude
Modulation)
dB
Measured with no modulation on the Visual carrier.
Carrier at blanking level, 15kHz LP filter
>50
Synchronous AM Noise (Synchronous Amplitude
Modulation)
dB
Measured with no modulation on the Visual carrier.
Carrier at blanking level, 15kHz LP filter
>40
Total Harmonic Distortion %
40 Hz to 15 kHz, after de-emphasis
<0.5
Amplitude Frequency Response dB
40 Hz to 15 kHz, after de-emphasis
± 0.5
Pre-emphasis uS Flat, 50uS, 75 uS selectable
Visual to Aural Cross-modulation
%
Measured per EIA-508: Visual carrier modulated
with NTC7 Composite test signal. Aural carrier
unmodulated.
< 4% (-28dB)
Dual Sound
Carrier Levels dB
Relative to peak visual
-13,-20
FM Signal to Noise Ratio
Unweighted
dB
60 (Exciter spec)
60 Target
58
Weighted dB
64 (Exciter spec)
60
Channel Cross-talk Attenuation dB
40 - 15kHz
> 70, 40 - 15kHz
> 80 typ (Exciter)
60
Stereo Cross-talk dB
100 - 15kHz
> 32, 100 - 15kHz
40 typ (Exciter)
30
NICAM
Input Connector At front panel
XLR, Female 5pin
Input Impedance
Ohms Balanced
600 Ohms / >10k Ohms
switch selectable
NICAM Signal NICAM 728
Input Level (nominal, mono/stereo) dBm +6
BTSC
Wideband Composite Input
Input Connector At rear panel BNC; female
Level V RMS
For ± 75 kHz deviation
1V RMS, adjustable
Range V RMS 0.5 - 2
Impedance
Ohms 75, unbalanced
50 Hz to 50 kHz ± 0.1
50 kHz to 110 kHz ± 0.5
Nominal Deviation kHz
Input level for 75kHz
deviation is adjustable
75
Deviation Limitation kHz 120
Wideband Composite Performance
At ± 75 kHz deviation, 1Khz test tone unless noted
otherwise
50 Hz to 15 kHz, measured with black picture < 0.25
15 kHz to 50 kHz, measured with black picture
< 0.75
Distortion (IMD) %
SMPTE 4:1 test signal
< 0.5
FM Signal-to-Noise dB
Measured at +/-75kHz deviation after 75uS de-
emphasis
> 65
AM Signal-to-Noise (Residual Amplitude
Modulation)
dB
Measured with no modulation on the Visual carrier.
Carrier at blanking level, 80kHz LP filter
> 50
Response dB
% Total Harmonic Distortion
Synchronous AM Noise (Synchronous Amplitude
Modulation)
dB
Measured with no modulation on the Visual carrier.
Carrier at blanking level, 80kHz LP filter
> 40
Audio Performance Achievable with Signal from
External BTSC Encoder
Stereo Separation dB
Equivalent mode (uncompanded)
50 Hz to 15 kHz
> 45
Crosstalk dB Stereo or Main channel into SAP > 50