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 to 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
