G♯/A♭ 4, A 4, A♯/B♭ 4, B 4, C 5, C♯/D♭ 5, D 5, D♯/E♭ 5, E 5, F 5, F♯/G♭ 5, G 5,
G♯/A♭ 5, A 5, A♯/B♭ 5, B 5, C 6, C♯/D♭ 6, D 6, D♯/E♭ 6, E 6, F 6, F♯/G♭ 6, G 6,
G♯/A♭ 6, A 6, A♯/B♭ 6, B 6, C 7]
When levels are fixed (i.e. ‘Fixed Tone Fixed Level’, Musical Pitch Fixed Levels), to adjust amplitude
select:
l Audio Macros > Fixed Amplitude > [-144 dBFS to 0 dBFS]
The Macros are applied across all audio groups.
Audio can be enabled or disable by Sub image:
l Sub Image Enable > Sub image 1/2/3/4 > [Enabled, Disabled]
Advanced Generation Tools [SDI Stress Mode]
[SDI Stress Toolset Mode; PHQXO-SDI-STRESS+PHQX01E /
PHQX01E-IP / PHQXM-01E + PHQXO-GEN (Qx IP)]
As part of the Advanced SDI Stress Toolset [PHQXO-SDI-STRESS], advanced generation tools are now
available via the instrument submenu, in SDI Stress Toolset Mode. The toolset provides: control over SDI
scrambler switch-off, sync bit insertion, a PRBS (pseudo-random binary sequence) mode for end-to-end
bit error rate testing (BERT), advanced jitter generation controls –facilitating the generation and bespoke
adjustment of jitter measurement parameters, SDI output amplitude control, SDI output muting, and driver
pre-emphasis. These tools support a wide range of advanced testing and troubleshooting.
SDI Scrambler
The selected video standard data stream can be made to bypass the SMPTE scrambler, just prior to the
output stage. To bypass the scrambler, disabled it:
l Advanced Generation Tools (BNC) > SDI Scrambler > [Enabled, Disabled]
Note: For the generation of conventional video, the default state for the SDI Scrambler is ‘Enabled’.
Sync Bit Insertion (12G / 6G)
Sync bit insertion prevents the occurrence of a pathological condition that results in the removal of sync bits,
otherwise known as 'potholing'. Before the output, a sync bit is applied to the Timing Reference Signal (TRS)
and Ancillary Data Flag (ADF) words of the generated video standard. Sync Bit Insertion can be enabled and
disabled in the submenu:
l Advanced Generation Tools (BNC) > Sync Bit Insertion > [Enabled, Disabled]
Note: This feature applies only to 6G-SDI and 12G-SDI video standards.
Note: The insertion of the sync bit is observable in the video signal TRS and ADF words seen in Analyser-
Dataview when ‘Sync Bit Removal’ is disabled.
PRBS Mode
In addition to SDI test signal generation, for the stress testing of SDI infrastructure the Qx offers end-to-end
BERT capability, with the addition of PRBS generation and analysis tools.
A variety of PRBS signals can be generated:
l Advanced Generation Tools (BNC) > PRBS Mode > [Disabled, PRBS-7, PRBS-9, PRBS-15, PRBS-23,
PRBS-31]
Once selected, a PRBS signal can be inverted. Errors can also be inserted into the stream:
l Advanced Generation Tools (BNC) > PRBS Mode > PRBS Signal Inversion > [Enabled, Disabled]
l Advanced Generation Tools (BNC) > PRBS Mode > PRBS Error Insertion > [Enabled, Disabled]
Page 18 PHABRIX Qx User Manual
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