Flashlink User Manual DLY-AES. Dual AES Audio Delay. network-electronics.com. Rev. 3

Transcription

1 Flashlink User Manual DLY-AES Dual AES Audio Delay network-electronics.com Rev. 3

2 Network Electronics ASA Thorøya P.O. Box 1020 Sandefjord, Norway Phone: Fax: Service Phone: Revision history Current revision of this document is the uppermost in the table below. Revision Replaces Date Change description New front page and removed old logo Added Materials Declaration and EFUP /10/05 Corrected chapter 4.2 and A 01/03/05 First official release. A - Preliminary version. 2

3 Contents Revision history Product overview Specifications Measurement conditions General AES inputs Reference input Outputs Delay VUC bit handling Sample rate converter performance GPI connections Detailed description Delay value Reference sample frequency Limitations Configuration Rotary switches DIP switches GYDA settings Examples Connector module Mounting the connector module Audio connections Module status GPI Alarm Module status outputs Front panel Status monitoring...13 General environmental requirements for flashlink equipment Certificate of Conformity Product Warranty Materials declaration and recycling information Materials declaration Environmentally-friendly use period Recycling information

4 1 Product overview The DLY-AES is a digital audio delay module in the Network Electronics flashlink range. The module has two stereo delay lines for digital audio which may be controlled separately or together. A tracking delay function may be controlled with an external pulse signal supplied by a frame synchroniser such as the FRS-SDI or the DAC-SDI. Each delay line has four different constant delay presets, one of which may be added to the tracking delay. The preset is controlled either by Gyda or by GPI. Delay changes are performed noiselessly. All four outputs may be used with Delay line 1. Maximum delay is 48 khz Tracking Input AES 1 AES 2 Delay Control Input GPI x 2 AES-11 Reference Input Black Burst Dip Sw. Setting Sync. Sep. Tracking Control SRC SRC Delay Control d d Clock Control PLD Delay Delay M U X Microcontroller Figure 1: DLY-AES Dual AES Audio Delay. AES 1 (1) AES 1 (2) AES 2 (1) AES 2 (2) Remote Control 4

5 2 Specifications 2.1 Measurement conditions Audio sampling rate: Ambient temperature: 48 khz. 25ºC. 2.2 General Power: Control: Monitoring: +5V DC approx. 0.3A 1.5W. DIP switches, Gyda system controller. Front panel LEDs and Gyda system controller. 2.3 AES inputs Number of inputs: Connector: Sample rate converter word-length: Sample rates: 2 (AES3-1995). Cannon D-sub 25 pin female. 24 bits. Any between 1/3 and 3 times the reference sample rate. 2.4 Reference input Format: AES11 (AES-3-ID) or analogue video. Connector: BNC. Reference Sample rate 48 khz. from video: Sample rates from AES11: 48, 44.1, 32 khz. Other rates >32 khz will be accepted but the delay calculations may be incorrect. 2.5 Outputs Number of outputs: Connector: Usage: 4 (AES3-1995). Cannon D-sub 25 pin female. Either dual outputs from delay lines 1 & 2 or quad outputs from delay line Delay Minimum delay: Maximum delay: Maximum fixed khz: Dependant on input and reference sample rates 92 samples at 48kHz input and reference. 0x80000 samples, 230ms reserved for tracking delay. 10.6s 11.6s 16.1s 2.7 VUC bit handling Channel status and (in)validity bits are transported but there is a small latency. Output channel status is modified to reflect reference sample frequency. 5

6 User bits are not transported. V bits are not tested for every received sample. Singular occurrences of V bits may be missed but long runs will be transported. 2.8 Sample rate converter performance Digital word length: -1 db FS: Dynamic range: 1 : 24 bits db worst case. 120 db (A) worst case. 2.9 GPI connections Input levels: 5V TTL. Internal pull-up resistor: 4.7 kω. Output type: NPN transistor open collector. Maximum voltage: 45V. Maximum current: 500mA dbfs A-weighted

7 3 Detailed description The DLY-AES card is a compact dual stereo audio delay line in the Conquer module range. It has two AES3 digital audio inputs and each output is duplicated giving four AES3 outputs. The card has two audio delay lines which may be controlled by the switches on the card, by the GPI preset lines or by the Gyda system controller. It may be used as a tracking audio delay used with frame synchronisers such as the FRS-SDI module or the DAC-SDI video converter with built-in synchroniser. 3.1 Delay value The delay time in each of the two delay lines will be sum of a static delay (which may also be zero) and the tracking delay, if required. The tracking delay time is derived from a pulse signal which is generated by video frame synchronisers and encoders. This signal must be connected to the RJ45 connector on the backplane. The tracking value is common for both delay lines. Delay changes will be performed without audible artefacts by choosing switching points close to zero. The static delay will be one of four presets which may be pre-programmed into the card. The active preset may only be switched with the GPI signals. Preset 1 is used when the GPI signals are not used. Gyda may be used to program different values into the presets for delay line 1 and delay line 2. So, preset 2 could be 100ms for delay line 1 and 200ms for delay line 2. This allows switching of presets to account for different processing equipment used. The only way to display the value of the four presets is with Gyda or with RS422 commands. The displayed total delay value shown by Gyda will always be the actual delay through the module. 3.2 Reference sample frequency The card uses a signal as a reference sample frequency for both delay lines. The reference signal should not be switched or changed during use. The reference may be analogue video or an AES signal applied to the reference input. The AES1 input signal is used as the frequency reference if no signal is present on the reference input. The reference signal is assumed to have one of the normal sample frequencies and will use the closest number if an odd sample frequency is used. The card uses sample rate converters so that the programmed delay time remains a constant number of samples for a given time. This also allows sample rate correction (pitching) in other equipment. 3.3 Limitations The output signals will be disrupted if the reference signal disappears or changes. User bits are not transported. Only static channel status information will be correctly transported. Singular asserted V bits may not be detected. 7

8 4 Configuration The configuration of the card may be performed with switches on the card or from the Gyda system controller. Each delay line has four delay presets. The static delay in each delay line may be switched between presets. The first preset may be programmed with the rotary switches on the front of the card. Two pins on the GPI connector may be used to switch between the four delay presets. The two pins are inverse binary coded so that preset one is when both inputs are high and preset 4 is when both pins are pulled low. 4.1 Rotary switches The rotary switches are only used when DIP switch 1 is on, i.e. the card is in manual mode. The four rotary switches program the delay value of preset 1. The four switches correspond to the decimal digits of milliseconds. The lowest switch is 1-9 ms, the next ms, the next ms and the next 1-9 s. From this is may be deduced that the maximum preset value will be 9,999 ms or almost 10s. 4.2 DIP switches Ten DIP switches control the most important functions of the card. The first DIP switch sets the mode of the module. The other DIP switches are only used if the first switch is in the 'ON' position. Static delay is common for delay line 1 and delay line 2 in manual mode. DIP switch configuration must be set according to the table below: Switch # Function Factory default 1 Manual mode On 2 Include static delay on Delay line 1 (Rotary switches) On 3 Include dynamic delay on Delay line 1 On 4 Include static delay on Delay line 2 (Rotary switches) On 5 Include dynamic delay on Delay line 2 On 6 Route all outputs from Delay line 1 Off 7 Unused / reserved Off 8 Unused / reserved Off 9 Unused / reserved Off 10 Card operational mode run/!program On All DIP switches are off when pointing towards the release handle. Note! Switch 10 must always be in the ON position. 8

9 4.3 GYDA settings 4.4 Examples Gyda may be used to monitor the status of each of the input signals and set up parameters in the cards. Switch 1 must be 'Off' if the parameters are to be controlled by Gyda. Four different static delays for each delay line may be programmed. 1) Manual mode, AES1 static delay, AES2 tracking delay DIP switches from 1-10: 1,1,0,0,1,0,0,0,0,1 (1 is on, 0 is off) Rotary switches top to bottom: 4,5,6,1 Tracking signal connected. GPI inputs not connected. = Outputs AES1A and 1B are AES1 signal delayed by s. Outputs AES2A and 2B are AES2 signal delayed by the tracking delay value. 2) Manual mode, AES1 tracking + static delay, AES2 tracking delay DIP switches from 1-10: 1,1,1,0,1,0,0,0,0,1 (1 is on, 0 is off) Rotary switches top to bottom: 0,1,2,0 Tracking signal connected. GPI inputs not connected. = Outputs AES1A and 1B are AES1 signal delayed by the tracking delay plus 120ms (3 video frame). Outputs AES2A and 2B are AES2 signal delayed by the tracking delay value. 9

10 5 Connector module The DLY-AES has a dedicated connector module: DLY-AES-C1. This module is mounted at the rear of the sub-rack. The module is shown in the figure below. Figure 2: Connector module for DLY-AES. The audio connector on the backplane is a 25 pin female d-sub connector with UNC threads. The reference input and loop through connectors are BNCs. The lower AUX BNC is not used. The RJ45 connector is used for alarms and GPI selection of delay presets. The tracking delay and preset GPI inputs are 5V TTL with internal 4.7kohm pull-ups. The Alarm outputs are active low open collector outputs. The signal connections are shown in the figures on the next page. 5.1 Mounting the connector module The details of how the connector module is mounted, is found in the user manual for the sub-rack frame FR-2RU This manual is also available from our web site: 10

11 5.2 Audio connections Figure 3: Audio connections on DLY-AES. 11

12 6 Module status The status of the module can be monitored in three ways. 1. GYDA System Controller (optional). 2. GPI at the rear of the sub-rack. 3. LED s at the front of the sub-rack. Of these three, the GPI and the LED s are mounted on the module itself, whereas the GYDA System Controller is a separate module giving detailed information on the card status. The functions of the GPI and the LED s are described in sections 6.1 and 6.2. The GYDA controller is described in a separate user manual. 6.1 GPI Alarm Module status outputs These outputs can be used for wiring up alarms for third party control systems. The GPI outputs are open collector outputs, sinking to ground when an alarm is triggered. The GPI connector is shown in figure below. DLY-AES module GPI pinning: Pin # Function 1 ALARM 1 (Card status). 2 ALARM 2 (AES 1 or AES 2 not detected). 3 Delay 0 (LSB static delay select). 4 Delay 1 (MSB static delay select). 5 Do not connect. 6 Do not connect. 7 Frame delay from FRS-SDI or DAC-SDI. 8 GND. Figure 4: GPI connections on DLY-AES. 12

13 6.2 Front panel Status monitoring The status of the module can be easily monitored visually by the LED s at the front of the module. The LED s are visible through the front panel as shown in the figure below. Figure 5: Front panel indicators for the DLY-AES. The DLY-AES has 4 LED s each showing a status corresponding to the GPI pinning. Diode \ State Red LED Green LED Orange LED No light Card state Ref. state AES1 input state AES2 input state Fatal internal error. Not locked to reference input. No signal input No signal input Module power is OK. Locked to reference input. Signal detected and locked. Signal detected and locked. Not applicable. Not applicable. Not applicable. Not applicable. Module has no power, or fuse is blown. Not applicable. Not applicable. Not applicable. 13

14 General environmental requirements for flashlink equipment 1. The equipment will meet the guaranteed performance specification under the following environmental conditions: - Operating room temperature range: 0 C to 50 C - Operating relative humidity range: < 90% (non-condensing) 2. The equipment will operate without damage under the following environmental conditions: - Temperature range: -10 C to 55 C - Relative humidity range: < 95% (non-condensing) 3. Electromagnetic compatibility conditions: - Emissions: EN (Directive 89/336/EEC) - Immunity: EN (Directive 89/336/EEC) 14

15 Certificate of Conformity Network Electronics ASA N-3204 Sandefjord Norway Company Registration Number: NO MVA Declares under sole responsibility that the product: Product Name: DLY-AES Product Description: Dual AES Audio Delay To which this declaration relates are of Norwegian origin and are in conformity with the following standards: EN : 1996 EN : 1996 Generic Emissions Standard Generic Immunity Standard 15

16 Product Warranty The warranty terms and conditions for the product(s) covered by this manual follow the General Sales Conditions by Network Electronics ASA. These conditions are available on the company web site of Network Electronics ASA: 16

17 Materials declaration and recycling information Materials declaration For product sold into China after 1st March 2007, we comply with the Administrative Measure on the Control of Pollution by Electronic Information Products. In the first stage of this legislation, content of six hazardous materials has to be declared. The table below shows the required information. Toxic or hazardous substances and elements 組成名稱 Part Name 鉛 Lead (Pb) 汞 Mercury (Hg) 镉 Cadmium (Cd) 六价铬 Hexavalent Chromium (Cr(VI)) 多溴联苯 Polybrominated biphenyls (PBB) 多溴二苯醚 Polybrominated diphenyl ethers (PBDE) DLY-AES X O O O O O O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ/T X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ/T Environmentally-friendly use period The manual must include a statement of the environmentally friendly use period. This is defined as the period of normal use before any hazardous material is released to the environment. The guidance on how the EFUP is to be calculated is not finalised at the time of writing. See for an unofficial translation of the draft guidance. For our own products, Network Electronics has chosen to use the 50 year figure recommended in this draft regulation. Network Electronics suggests the following statement on An Environmentally Friendly Use Period (EFUP) setting out normal use: EFUP is the time the product can be used in normal service life without leaking the hazardous materials. We expect the normal use environment to be in an equipment room at controlled temperature range (0ºC - 40ºC) with moderate humidity (< 90%, non-condensing) and clean air, not subject to vibration or shock. Further, a statement on any hazardous material content, for instance, for a product that uses some tin/lead solders: Where a product contains potentially hazardous materials, this is indicated on the product by the appropriate symbol containing the EFUP. The hazardous material content is limited to lead (Pb) in some solders. This is extremely stable in normal use and the EFUP is taken as 50 years, by comparison with the EFUP given for Digital Exchange/Switching Platform in equipment in Appendix A of General Rule of Environment-Friendly Use Period of Electronic Information Products. This is indicated by the product marking: 50 17

18 It is assumed that while the product is in normal use, any batteries associated with real-time clocks or battery-backed RAM will be replaced at the regular intervals. The EFUP relates only to the environmental impact of the product in normal use, it does not imply that the product will continue to be supported for 50 years. Recycling information Network Electronics provides assistance to customers and recyclers through our web site Please contact Network Electronics Customer Support for assistance with recycling if this site does not show the information you require. Where it is not possible to return the product to Network Electronics or its agents for recycling, the following general information may be of assistance: Before attempting disassembly, ensure the product is completely disconnected from power and signal connections. All major parts are marked or labelled to show their material content. Depending on the date of manufacture, this product may contain lead in solder. Some circuit boards may contain battery-backed memory devices. 18