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Main / Distribution amplifiers / PDVA-7338
| PDVA-7338 series 3G/HD/SD SDI/ASI distribution amplifier |
PROFLEX™ PDVA-7338 series 3G/HD/SD SDI/ASI distribution amplifiers provide the four or eight output copies of the input signal of the 3G/HD/SD SDI/ASI standards.
PDVA-7338-4 modules occupy one slot, PDVA-7338-8 modules occupy two slots in the PROFLEX™ rack.
PDVA-7338 simplified schematics
Features
- 3G-A/B, HD/SD SDI, DVB-ASI support
- input signal standard autodetection with manual override capability
- BNC and HDMI outpus are available simultaneously
- relay bypass on power-down and module extraction
- input signal loss indication
- EDH/CRC status indication (for SD SDI and HD SDI respectively) within the last minute/hour interval
- SMPTE sync word errors (DVB-ASI only)
- automatic cable equalizer
- input signal reclocking/reshaping
- embedded audio presence indication
- audio group number selection for the 8-channel audio level meter bargraph OSD
- a stereo pair selection (from a previously selected group) for monitoring at the HDMI output
- two 4-channel audio level meter bargraph OSD
- dBU or dBFS user-selectable scale with adjustable reference level
- 3G level B: stream 1/2 selection for HDMI monitoring
PDVA-7338-4 rear panel view
PDVA-7338-8 rear panel view
Technical specifications
- Input
| Standard compliance |
SMPTE 425M |
3G level A, B 4:2:2 |
| 3G 4:4:4 |
| SMPTE 274M (HD SDI) |
1920*1080 |
| SMPTE 296M (HD SDI) |
1280*750 |
| SMPTE 295M (HD SDI) |
1920*1080 |
| SMPTE 260M (HD SDI) |
1920*1035 |
| SMPTE 259M (SD SDI) |
720*576/50i |
| 720*480/60i |
| DVB-ASI |
| input impedance and connector type |
75 Ohm, BNC |
| automatic cable equalizer |
up to 100 meters of 8281 or similar cable |
- Output
| output signal standard |
as per the input |
| number of outputs |
four |
| connector type, impedance |
BNC, 75 Ohm |
| return loss |
better than 12dB at 1.5GHz |
| output amplitude |
800mV±10% |
| signal rise and fall time |
SD SDI |
700ps |
| HD SDI |
270ps |
| jitter |
less than 0.2UI |
- HDMI
| standard compliance |
3G level A |
1080p/50 |
| 1080p/59.9 |
| 1080p/60 |
| 3G level B |
1080p/50 |
| 1080p/59.9 |
| 1080p/60 |
| 1080p/25 |
| 1080p/29.7 |
| 1080p/30 |
| 1080PsF/25 |
| 1080PsF/29.9 |
| HD SDI |
1080i/50 |
| 1080i/59.9 |
| 1080i/60 |
| 1080p/25 |
| 1080p/29.9 |
| 1080p/30 |
| 1080PsF/25 |
| 1080PsF/29.9 |
| 1080PsF/30 |
| 1035i/59.9 |
| 1035i/60 |
| 720p/50 |
| 720p/59.9 |
| 720p/60 |
| SD SDI |
576i/50 |
| 480i/60 |
PLEASE, NOTE: no audio deembedding is provided for the 720p/25, 720p/29.9, 720p/30, 720p/24 and 720p/23.9 formats, therefore - no audio monitoring possible.
General description
After the automatic cable equalization stage, the input signal is optionally reclocked and provided at the outputs. The copy of the reclocked signal is then processed by a 3G-A/B, HD/SD SDI, DVB-ASI processor to detect the standard, to monitor the EDH/CRC status and to deembed any two groups of audio for monitoring (four channel pairs, eight channels totally). The deembedded audio is analyzed by 8-channel level meter (VU or quasi-peak). The audio level meter bargraph is overlayed on a TV picture provided at the HDMI monitor output. All stereopairs are presented in the HDMI signal, for monitoring the HDMI 1st/2nd channels represent the currently selected channel pair.
Controls and indicators
All the buttons and indicators are located on the frontal panel of PDVA-7338
The controls:
Toggling the MODE button select a menu entry. Pressing the UP and DOWN buttons edit a selected parameter.
The indicators:
- LOSS – lit when an input signal is lost
- EDH DET – lit when the valid EDH packets are detected in the input signal
- EDH/CRC/ASI ERROR MIN/HOUR – lit when:
- two or more SDI EDH error were detected within the last minute/hour interval
- two or more 3G/HD SDI CRC error were detected within the last minute/hour interval
- two or more SMPTE sync word errors were detected within the last minute/hour interval
- ASI – lits to display the input signal's standard is DVB-ASI
- AUD DET– lit when the valid audio packets are detected in the input signal
Configuring the PDVA-7338 distribution amplifier
- the 1st page:
- upper line: input signal standard and embedded audio indication
- for 3G HD SDI the possible values are:
- 3G-A: 1080p/50; 1080p/59.94; 1080p/60; 1080p/24; 1080p/23.98; 1080I/50; 1080I/59.94; 1080I/60; 720p/50; 720p/60; 720p/59.94; 720p/25; 720p/24; 720p/23.98
- 3G-B: 1080i/50; 1080i/60; 1080i/50/94 (are indicated as 3G-B 1080/50, 60 and 59.94 respectively)
1080PsF/25; 1080PsF/30; 1080PsF/29.94 (are indicated as 3G-B 1080/50, 60 and 59.94 respectively)
1080p/30; 1080p/29.97; 1080p/25; 1080p/24; 1080p/23.98; 1080PsF/24; 1080PsF/23.98
- for HD SDI the possible values are:
1080i/50; 1080i/60; 1080i/59.94; 1080p/25; 1080p/25-EM; 1080p/30; 1080p/29.97; 1080p/24; 1080p/24-EM; 1080p/23.98; 1080p/23.98-EM;
1080PsF/25-EM; 1080PsF/24; 1080PsF/24-EM; 1080PsF/23.98; 1080PsF/23.98-EM; 1920x1035i/59.94
720p/50; 720p/50-EM; 720p/60; 720p/60-EM; 720p/59.94; 720p/59.94-EM; 720p/25; 720p/25-EM; 720p/30; 720p/30-EM; 720p/29.97; 720p/29.97-EM;
720p/24; 720p/24-EM; 720p/23.98; 720p/23.98-EM
- for SD SDI the possible values are:
625i/50; 525i/59.9
- lower line: embedded audio presence
- a number in a bracket denotes an audio group detected, for example: GR[1][2][3][4] all four groups have embedded audio, GR[1][-][-][-] group #1 only has embedded audio
- the 2nd page: MON SELECT, audio channel pair selection for monitoring
- Note: the 3G/HD/SD SDI may embed up to eight channel pairs organized as four groups. Group #1 contains channel pairs #1/2 and #3/4, group #2 contains channel pairs #5/6 and #7/8, roup #3 contains channel pairs #9/10 and #11/12, roup #4 contains channel pairs #13/14 and #15/16 respectively. Only the preselected groups are monitorable, see the IND 1 ASSIGN and IND 2 ASSIGN menu entries
- press the UP or DOWN buttons to select a channel pair for monitoring, the "underscore" bar denotes the currently selected pair number
- the 3rd page: VUMETER 1, the first bargraph OSD meter ON/OFF
- the 4th page: IND 1 ASSIGN, audio group selection for the first bargraph OSD level meter
- the possible values are GROUP 1, GROUP 2, GROUP 3 and GROUP 4
- the 5th page: IND 1 POS, the first bargraph OSD level meter horizontal position adjustment
- the 6th page: VUMETER 2, the second bargraph OSD meter ON/OFF
- the 7th page: IND 2 ASSIGN, audio group selection for the second bargraph OSD level meter
- the possible values are GROUP 1, GROUP 2, GROUP 3 and GROUP 4
- the 8th page: IND 2 POS, the second bargraph OSD level meter horizontal position adjustment
- the 9th page: VU METER SCALE selection
- DBFS: EBU alingment, 0dBFS corresponds to +18dBU
- DBU: quazi-analog, 0dBU corresponds to 0,775Vrms
- the 10th page: VU REF DBFS, the DBFS scale reference level setting
- the possible values are 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -12, -14, -16, -18, -20, -22, -24, -26, -30 DBFS
- the 11th page: VU REF DBU, the DBU scale reference level setting
- the possible values are +9, +8, +7, +6, +5, +4, +3, +2, +1, 0, -1, -2, -3, -4, -5, -6, -8 -10, -12, -14, -16 DBU
- the 12th page: RECLOCKING, selection of "raw" or reclocked/reshaped signal at the electrical 3G/HD/SD SDI/ASI output
- should be enabled for 3G/HD/SD SDI signals, may be disabled for ASI signals
- the 13th page: EDH RESET, press the UD or DOWN buttons to reset the error counter
- the 14th page: 3G-B Stream selection for HDMI monitoring
A 3G Level B signal contains two 1.485Gbps streams. Select Stream1 or Stream2 for monitoring.
- the 15th page: Firmware, the model and the firmware version, f.e. PDVA-7338 vX.X
The remote control and management from a PC
All the PROFLEX™ modules are remote controllable from a PC. This facility is available if a rack is fitted with a CPU module (ordered separately).
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