User's Manual

USER
MANUAL
MPD-1611291-A
EXACT-V2 High End Rack Modulator / Exciter
3/10/2017
MPD-1611291-A
Page 56/94
3.5.5 Digital modulation
Characteristics Typical Value Comment
ATSC Modulation
ATSC Mode: 8VSB According to ATSC A/53
Channel Bandwidth: 6 MHz
Characteristics Typical Value Comment
Modulation Performances
In Band SNR (Eq. OFF):
≥ 30 dB
EVM (Eq. OFF):
≤ 2.0%
MER (Eq. OFF):
≥ 30 dB
MER (Eq. ON):
≥ 45 dB
Shoulder and Out of Band
Rejection:
≥ 63 dB
≥ 57 dB / ≥ 63 dB with precor
≥ 63 dB typical
From pilot level
EXACT-V2
EXACT-V2-20dB at +20 dBm
EXACT-V2-20dB at +17 dBm
Spurious: ≤ -50 dBc Relative t
o the total power of the
signal at nominal output power
Amplitude Ripple:
≤ 0.2 dB typical
Group Delay Ripple:
≤ 20 ns typical
Pilot Carrier Phase Noise:
≤ -104 dBc/Hz @ 20 kHz up to
700 MHz
PAPR
Configuration Range:
Pre-clipping Optimization:
Protection Clipping:
8 to 20 dB (0.1 dB step)
0 to 255
8 to 20 dB (0.1 dB step)
Characteristics Typical Value Comment
Miscellaneous
Automatic Mute: Configurable on stream errors
Configurable on clock errors Configurable Timeout (LORS)
RF Maintain: Configurable on stream errors
Spectrum Reverse: Configurable
Test Modes: Single sine tone / +6 dB Sinus
PRBS