SD-4/16 Manual
SD-4/16
In-picture audio meter
From the range of colour in-picture audio meters by Chromatec
User instructions
Distributed Worldwide:
M ic hael St even s & Partners Ltd
Invicta Works Elliott Road Bromley Kent BR2 9NT UK
Tel: +44 (0)20 8460 7299 Fax: +44 (0)20 8460 0499
E - m a i l : s a l e s @m i c h a e l - s t e v e n s . c o m
Web:http://www.chromatec.com
SD-4/16
In-picture audio meter
Model overview
The Model SD-4/16 is a serial digital in-picture audio meter, capable of
simultaneously displaying up to 16 channels of embedded audio metering in
bargraph form. Additionally, it is possible to monitor either 2 pairs of external
analogue or AES/EBU audio channels, depending on the version specified.
The audio bargraphs and on-screen data are mixed with the outgoing SDI
signal. A composite video monitor output is also provided.
A comprehensive on-screen menu allows the user to configure the SD-4/16
according to requirements including bar colours, position on screen, level
references, etc. Up to four groups of four audio channels may be displayed
together with sum & difference (M&S) meters and a phase correlation meter.
Six standard meter scales and ballistics are available together with VU
superimposed on PPM. Alarms are provided for audio/video loss, over level,
and sustained anti-phase with TTL outputs and on-screen indication in an
alarm condition. There is provision for a wired remote control, duplicating the
operation of the front panel buttons.
Front panel buttons
Insert on
The ‘Insert On’ button switches the bargraphs on or off according to the bar
groups pre-selected from the Menu and at the previously set fade level.
Function/fade
The Fade buttons determine the mix level of the bargraphs superimposed on
the outgoing video and operate only when the unit is locked (with the red LED
off). When the unit is unlocked and in the Menu mode, these buttons are used
to move the cursor up or down the Menu line in order to select a function.
Lock
The ‘Lock’ button performs two functions depending on which mode the unit is
operating. Unlock is activated by keeping the button pressed for about 3 seconds after which the red LED will be lit and the on-screen Menu appears, disabling the Fade function. While in the Menu mode some actions require confirmation which is carried out by pressing both Lock and Insert buttons simultaneously (see below). After carrying out changes within the Menu, pressing the
Lock button again will save the settings and return the SD-4/16 to the normal
meter mode.
Select parameter
When the unit is unlocked the Select Parameter buttons are used to change
the system settings depending on the Menu line selected.
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SD-4/16
In-picture audio meter
System Menu
In order to change the numerous parameters of the SD-4/16 it is necessary to
enter the system Menu by pressing the Lock button for approximately 3 secs,
whereupon the red LED above the Lock button will light and the Menu will
appear on-screen. In all cases the "Select Parameter" buttons select the value
shown in the centre column of the menu. Where applicable, the adjustable values shown in the third column are carried out by using the "Insert" button as a
"shift" key together with the "Select Parameter" buttons. Those menu lines that
have a red flashing cursor require confirmation of an action which is carried out
by pressing both the "Insert" and "Lock" buttons simultaneously, whereupon
the cursor stops flashing. See following Menu pages.
Note - The order of the following menu lines may vary according to the software
release of your SD-4/16.
Menu display
Menu Page 1
USER CONFIGURATION SELECT
The SD-4/16 has two user memories, User 1 and User 2, where all configuration settings are stored. Depending on which user is currently shown or subsequently selected, exiting the menu will store any changes made in the menu to
that user. In the unlikely event that a system reset is required then all user settings will be returned to the factory default settings.
USER CONFIGURATION COPY/RESET
It is possible to copy one user configuration to the other user or reset users to
the factory default settings. Each option has a flashing red cursor indicating
that confirmation of this action is required. This is carried out by pressing the
Insert and Lock buttons simultaneously.
METER GROUP HEIGHT
The main bargraph group height may be set to Normal (full height), Half or
Quarter depending on the vertical meter resolution required.
METER GROUPS VERT POSITION
Allows vertical adjustment of the bargraph groups. The menu marker provides
an approximation of their relative position on screen.
AUDIO SOURCE SELECT
The SD-4/16 may be switched to display audio derived from the incoming SDI
video feed (embedded), or either external AES/EBU or external analogue. In all
cases a maximum of 16 level meters may be displayed at any one time. When
viewing de-embedded audio it is possible display all four groups of audio.
Menu Page 1/2
METER GROUP [X] DISPLAY
Up to four bargraph groups, A,B,C & D may be displayed, by default A & B are
located to the left of the screen and C & D to the right. Each of these groups
can be assigned to display Level, Sum & Difference, Sum only, or turned off.
METER GROUP [X] CHANNELS ASSIGN
Any combination of channel pair assignments may be selected, depending
upon the audio source. In embedded audio mode channels 1+2, 3+4, or all 4
channels from any embedded group can be assigned to each meter group. In
external AES/EBU or external analogue mode channels 1+2, 3+4 or all 4 external channels can be assigned.
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SD-4/16
In-picture audio meter
METER GROUP [X] HORIZ POSITION
Allows horizontal adjustment of the bargraph group. The menu marker provides an approximation of its relative position on screen. When moving a group
and another group is in the way, one group will "push" the other one along.
METER GROUP [X] SCALES POSITION
Whichever scale is selected (see Menu p3), it may be placed to the left or right
of the bargraph or turned off.
BAR WIDTH
The bar width of all bars or individual bars within each group can be adjusted
by first selecting which bar to adjust using the Select Parameter buttons. Then
the bargraph width value (in pixels) may be changed by using the Insert button
as a "shift" key together with the Select Parameter buttons. Selecting "All
Bars" applies the value chosen to all bargraphs.
BAR SPACING
The bar spacing between bars in each group can be adjusted by first selecting
which bar to adjust using the Select Parameter buttons. The bargraph spacing
value (in pixels) may then be changed by using the Insert button as a "shift"
key together with the Select Parameter buttons. Selecting "All Groups" applies
the value chosen to all Groups.
PEAK HOLD ENABLE
The peak hold indicator is a small coloured line located at the top of each
audio level meter and may be turned off if not required. All signal peaks are
displayed for the time period selected unless updated by a higher peak in the
meantime. If Infinite is selected then the peak levels of a complete programme
may be monitored.
PEAK HOLD INDICATOR COLOUR
The required indicator colour may be chosen.
SUM LEVEL SET
Depending on operating requirements the sum level may be adjusted.
Normally this is set to –6dB.
Menu Page 3
DIGITAL SCALES SELECT
The scales to use when the audio source is digital are chosen here. By default
standard AES/EBU digital scales are displayed. However, these may be
changed to any of five internationally recognised analogue scales (together
with their respective ballistics). In this case it is necessary to set the
Digital/Analogue Scale Reference as shown below.
DIGITAL UPPER-RANGE POINT
This value sets the upper colour transition point of the bargraph when the
audio source is embedded audio or AES/EBU. This value is always in dBfs.
DIGITAL LOWER-RANGE POINT
This value sets the lower colour transition point of the bargraph when the
audio source is embedded audio or AES/EBU. This value is always in dBfs.
DIGITAL/ANALOGUE SCALE REF
It is necessary to set this value when displaying a digital input signal on an
analogue scale. The European default value is –18dBfs whereas in the USA
this is usually –20dBfs.
ANALOGUE SCALES SELECT
By default standard DIN PPM scales are displayed. The chosen scale is used
when the audio source is analogue. These may be changed to any of five
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SD-4/16
In-picture audio meter
internationally recognised analogue scales (together with their respective ballistics).
ANALOGUE UPPER-RANGE POINT
This value sets the upper colour transition point of the bargraph when the
audio source is analogue.
ANALOGUE LOWER-RANGE POINT
This value sets the lower colour transition point of the bargraph when the
audio source is analogue.
ANALOGUE 0dB REFERENCE
The selected value is the level (in dBu) of the analogue input signal that is to
be displayed at 0dB when using an analogue scale.
BAR COLOUR OVER-RANGE
The "Over-Range" portion of the bargraph is at the top. The required bargraph
is selected and then colours may be changed by using the Insert button as a
"shift" key together with the Select Parameter buttons. Selecting "All" applies
the colour chosen to all bargraphs.
BAR COLOUR UPPER-RANGE
The "Upper-Range" portion of the bargraph is at the centre. The required bargraph is selected and then colours may be changed by using the Insert button
as a "shift" key together with the Select Parameter buttons. Selecting "All"
applies the colour chosen to all bargraphs.
BAR COLOUR LOWER-RANGE
The "Lower-Range" portion of the bargraph is at the bottom. The required bargraph is selected and then colours may be changed by using the Insert button
as a "shift" key together with the Select Parameter buttons. Selecting "All"
applies the colour chosen to all bargraphs.
METER GROUP BACKGROUND COLOUR
The required background colour may be chosen.
METER GROUP SCALES COLOUR
The required scales colour may be chosen.
METER GROUP LABELS COLOUR
The labels are situated at the base of the bargraph groups. The required colour
may be chosen.
Menu Page 4
PHASE BAR MULTI-INDICATORS
When set to IN+OUT mode a small phase correlation bar appears at the top of
all pairs of level meters. The OUT ONLY option will cause a flashing antiphase indicator bar to appear at the top of each pair of level meters only when
the pairs are out of phase.
PHASE BAR [X] ASSIGN
Assigns Phase Bar A or B to the selected channels or bargraph group.
PHASE BAR [X] HORIZ POSITION
Allows horizontal adjustment of the selected phase bar. The menu marker provides an approximation of its relative position on screen.
PHASE BAR [X] VERT POSITION
Allows vertical adjustment of the selected phase bar. The menu marker provides an approximation of its relative position on screen.
PHASE BARS MAX HOLD ENABLE
A maximum hold cursor may be selected to indicate any negative phase
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SD-4/16
In-picture audio meter
excursion. This may be reset by briefly pressing the Lock button when in the
normal operating mode.
PHASE BAR COLOURS
After selecting Phase In or Phase Out the colours may be selected by pressing
the Insert button as a "shift" key together with the Lock button.
Menu Page 5
ALARM INDICATORS
The on-screen alarm indicators comprise small coloured squares placed at the
top of the respective bargraph groups. These are colour coded for each type
of alarm condition. They may be hidden if not required. The colour code are:
- Yellow for audio loss.
- Red for audio over
- Magenta for anti-phase
- White for AES carrier loss
ALARMS MASTER RESET
All alarms may be reset. The flashing red cursor indicates that confirmation of
this action is required. This is carried out by pressing the Insert and Lock buttons simultaneously.
ALARMS AUTO RESET
When activated, in an alarm condition the relevant alarms will automatically be
reset after the selected time period subject to no further alarm conditions
occurring in the interim. The timing of each individual alarm is independent and
is taken from the point that the alarm is triggered or re-triggered.
ALARM, SDI LOSS ENABLE
When turned on, this alarm will be triggered if the SDI input is lost.
ALARM, PICTURE FREEZE ENABLE
When turned on, this alarm will be triggered if there is no change detected in
consecutive frames of the incoming video over a period of 1 second.
ALARM, PICTURE LOSS ENABLE
When turned on, this alarm will be triggered when there is a persistent low
luminance level in the whole incoming video.
ALARM, AES LOSS ENABLE
When turned on, this alarm will be triggered if any of the selected AES/EBU
inputs are lost.
ALARM, AUDIO OVER CHANNELS
When turned on, this alarm will be triggered if the selected audio channels
exceed the selected level.
SET DIGITAL LEVEL
Sets the threshold level for the audio over alarm when the levels being monitored are from a digital source. The level set here is in dBfs.
SET ANALOGUE LEVEL
Sets the threshold level for the audio over alarm when the levels being monitored are from an analogue source.
ALARM, AUDIO LOSS ENABLE
When turned on, this alarm will be triggered if the selected audio channels do
not reach the selected threshold within the time set below.
SET TIME
Sets the time before the audio loss alarm is triggered.
SET DIGITAL THRESHOLD
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SD-4/16
In-picture audio meter
Sets the threshold level below which the audio loss alarm will be triggered.
The level set here applies when the audio input is digital, and the levels set
here are in dBfs.
SET ANALOGUE THRESHOLD
Sets the threshold level below which the audio loss alarm will be triggered.
The level set here applies when the audio input is analogue.
Menu Page 6
ALARM, ANTI-PHASE ENABLE
When turned on, this alarm will be triggered if the selected phase bars are out
of phase according to the parameters set below.
SET TIME
Sets the time before the anti-phase alarm is triggered.
SET THRESHOLD
Sets the threshold in degrees beyond which the anti-phase alarm will be triggered.
ALARM ASSIGN 1-8
Assigns an alarm to each of the 8 GPI alarm outputs. The alarms assigned
here also need to be enabled on menu pages 5 and 6. An untriggered alarm
will have 0V on the assigned pin, a triggered alarm will cause the assigned pin
to output +5V.
Menu Page 7
VIDEO DISPLAY
In the Auto mode, if the incoming SDI feed is lost the SD-4/16 will automatically switch to internally generated black enabling the external analogue or
AES/EBU audio still to be viewed. If the SDI signal is reinstated the SD-4/16
will automatically revert to displaying the video from this feed. When set to
Internal, any audio feed (SDI embedded, AES/EBU or analogue – as selected
in Page 1 of the menu) may be viewed on internal black if in-picture audio
metering is not required.
VIDEO STANDARD INTERNAL
If the SD-4/16 is used as a dedicated audio meter in Internal mode only it will
be necessary to set the outputs to 525 line NTSC or 625 line PAL. Although
the incoming SDI video standard is detected automatically it is still necessary
to set the internal black generator manually so that if the incoming video is lost
(and Auto mode is selected) then the SD-4/16 will output the required television standard.
NTSC PEDESTAL
The NTSC pedestal of the outgoing composite video may be set on or off.
Master Reset
Master Reset is achieved by turning off the power for a few seconds, and
turning it back on again while pressing both Fade/Function buttons until the
bargraphs appear. A Master Reset is employed to return all settings to the
factory default, or it may be carried out in the unlikely event that the unit fails
to respond to the front panel push buttons. Please note that all user settings
will be lost.
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SD-4/16
In-picture audio meter
Connections
SDI
The SD-4/16 is normally connected in-line with an SDI monitor feed via the
appropriate 75ohm BNC connectors and is designed to accept 525 or 625 line
SMPTE 259M serial digital video. An active loop-through copy output is also
provided.
Analogue video
The composite output is on 75ohm BNC connectors. This is an analogue copy
of the SDI input plus superimposed audio bargraphs.
Audio
Two pairs of AES/EBU and two pairs of analogue inputs are provided to
accompany the SDI when separate audio and video feeds are employed.
Power
The SD-4/16 will operate from a nominal 115VAC or 230VAC mains supply.
The mains input voltage is selected by the switch located on the rear panel
next to the power inlet.
Connector Details
Alarms: 25 way ‘D’ female
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Description
Alarm Assign 1
Alarm Assign 3
Alarm Assign 5
Alarm Assign 7
No connection
No connection
No connection
No connection
Reset All Alarms (Short
to GND for reset)
No connection
+5V
GND
GND
Alarm Assign 2
Alarm Assign 4
Alarm Assign 6
Alarm Assign 8
No connection
No connection
No connection
No connection
No connection
No connection
+5V
GND
RS422 Data Port: 9 way
‘D’ female
Pin
1
2
3
4
5
6
7
8
9
Description
+5V
RxTxGND
GND
+5V
Rx+
Tx+
GND
Remote Control: 15 way
‘D’ female
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Description
Insert on/off
Fade +, up arrow
Left arrow
No connection
Lock LED
No connection
+5V
+5V
Fade -, down arrow
Lock
Right arrow
No connection
Insert on/off LED
GND
GND
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SD-4/16
In-picture audio meter
Rear panel layout
SD-4/16 specifications
(subject to change without notice)
Inputs:
1 x SMPTE 259M Serial digital 525/625 75ohm BNC.
2 x Pairs AES/EBU digital audio, 110ohm balanced (SD-4/16D)
2 x Pairs analogue audio, balanced, 30kohm impedance (SD-4/16A)
1 x Remote front panel connection
Outputs:
1 x SMPTE 259M Serial 525/625 75ohm BNC
1 x SMPTE 259M Serial 525/625 75ohm BNC copy output
1 x Composite video, 1Vp-p, PAL/NTSC 75ohm BNC
8 x Alarm Assignment GPI outputs
Embedded audio extraction:
Sampling rate: 32-48kHz variable, automatically detected
Digital audio processing resolution: 16 bits
Audio channels extracted: All 4 groups (16 channels)
Scales & ballistics:
AES/EBU: Overall dynamic range: 60dB (0dBu to -60dBu)
Attack time: 1 sample
Decay time: 1.5secs per 20dB
DIN PPM: Overall dynamic range: 55dB (+5dB to -50dB)
Attack time: 10ms
Decay time: 1.5secs per 20dB
BBC PPM: Overall dynamic range: 28dB (+12dB to -16dB)
Attack time: 10ms
Decay time: 2.8secs per 24dB
Nordic PPM Overall dynamic range: 60dB (+12dB to -48dB)
Attack time: 10ms
Decay time: 1.7secs per 20dB
VU: Overall dynamic range: 23dB (+3dB to -20dB)
Attack time: 300ms
Decay time: 300ms per 20dB
VU EXTD: Overall dynamic range: 80dB (+10dB to -70dB)
Attack time: 300ms
Decay time: 300ms per 20dB
Phase correlation:
Attack time: 1sec for 0 to ±1 deviation
Decay time: 1sec for ±1 to 0 deviation
Input dynamic range: 45dB
Minimum input level: -50dB
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