ClearOne comm AP800 manuale d’uso

AP800 Audio Conferencing System Installation & Operation Manual[...]

ii T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 © 2002 ClearOne Communications, Inc. All rights reser ved. No part of this document may be reproduced in any form or by any means without written permission from ClearOne Communications, Inc. Printed in the United States of America. ClearOne Communications, Inc. reser ves specif[...]

iii T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 AP800 Installation and Operation Manual T able of Contents CHAPTER 1: Introduction 1 Product Overview 1 Features 2 Professional Services Group 3 T echnical Support 3 Sales and Customer Ser vice 3 ClearOne Communications EuMEA GmbH 3 Product registration 3 Product returns 3 Unpac[...]

iv T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 R outing P arameters 24 Meter P arameters 27 CHAPTER 3: AP -W are Software 29 Description 29 Installing AP -Ware 30 T o install AP - Ware 30 CHAPTER 4: Operation 31 Control 31 R emote Control 31 V olume Control 31 Muting 32 APPENDICES 33 Appendix A: Specifications 33 Appendix B: [...]

T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Congratulations on purchasing the Audio P er fect ® 800, an advanced twelve-by- twelve digital matrix mixer with Gentner ® Distributed Echo Cancellation ® and audio processing. It uses six user -definable presets to quickly adapt to a variety of teleconferencing and sound reinfor[...]

Introduction ~ Product Overview 2 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 F eatures • Gentner ® Distributed Echo Cancellation ® technology; each microphone has its own echo canceller for a total of eight echo cancellers per unit • Easy-to-use AP - Ware software for quick configuration of all functions • 100 percen[...]

3 Introduction ~ Professional Services Group T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 If you need any additional information on how to install, set up, or operate your system, please contact us at one of the locations listed below . We welcome and encourage your comments so we can continue to improve our products and ser v[...]

Introduction ~ Unpacking Ensure that the equipment shown below was received with your shipment. 4 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Unpacking www.gentner.com Audio Products AP800 Audio Conferencing System Gentner Corporation ~ 1825 Research Way, Salt Lake City, UT 84119 ~ tel 1-800-945-7730 ~ fax 1-800-933-5107 Inst[...]

5 Introduction ~ Controls and Connections T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 D. Meter . The Meter button takes you directly to the Meter branch of the AP800 ’ s LCD programming tree. E. System, Inputs, Outputs , R outing. These buttons provide direct access to the corresponding sections in the LCD menu. F. Mic On L[...]

Introduction ~ G-Link Network 6 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 G-Link network architecture allows up to eight AP800s/AP400s and up to 16 AP10 T elephone Inter faces to be controlled as if all were part of a single unit. Digital technology can provide a distinct advantage in designing and controlling teleconferenc[...]

T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 CHAPTER 2: Installation P ower requirements The AP800 will accommodate an AC voltage-input of 100 – 240V AC, 50/60Hz, 30W . Auxiliar y equipment Any auxiliar y equipment to be used with the AP800 (i.e., AP400, AP10 T elephone Inter face, AP IR R emote Control, desktop kit, microph[...]

The AP800 is designed for easy installation and setup. All connections are made through rear -panel connectors. This chapter provides instr uctions on installing the units and making initial connections, creating a G-Link network, assigning device ID numbers, selecting the mixer mode, and using the LCD menu. The diagram below illustrates the typica[...]

9 Installation ~ Installation T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 3. If you are using an external RS-232 controller or the AP IR remote, connect it to the RS-232 port [F]. 4. Wire the inputs and outputs to the AP800 using the provided three-terminal Phoenix push-on connectors. These connectors are designed for easy wi[...]

Installation ~ Installation 10 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 T o create a G-Link network 1. Insert a G-Link terminator (provided) in the G-Link In connector of the first unit in the network. 2. Connect the RJ-45 jumper cable (or Cat. 5 twisted-pair cable) to the G-Link Out connector of the first unit and to the [...]

11 Installation ~ Installation T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Device types Device IDs are automatically assigned a device type. AP800s are always device type “ 1 ” (AP400 device types are “ 3 ” , AP10 device types are “ 2. ” ). The device ID # selected is added to the device type “ 3 ” to generate[...]

Installation ~ Installation 12 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 T o set mixer mode 1. Press the System button. Scroll through the menu until you see Mixer Mode. 2. Press Enter , then scroll through the three options. 3. Press Enter at the appropriate option to select it. 4. R epeat this process for all AP units in [...]

13 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 The AP800 ’ s front panel is simple and intuitive to operate, thanks to its front-panel user inter face: a 2x16 character LCD, previously described menu buttons, level LED bar meter and gate LED bar meter . When power is applied to the AP800, the [...]

Installation ~ LCD Programming 14 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 P ow er-Up Screen Outputs Inputs System Routing Me ter Select Preset Lock Panel Set Passcode De vice ID Un it ID # Mixer Mode Ga te P aram e ters RS- 232 Inputs 1- 8 Inputs A,B,C,D Subb us 1 , 2 Output 1-8 Output A , B , C , D Route to Outputs 1-8 R[...]

15 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 System parameters There are eight system-level parameters (see Figure 2.6, previous page) with which an AP800 can be programmed: select preset, lock panel, set passcode, device ID, unit ID number , mixer mode, gate parameters, and RS-232. For defaul[...]

Installation ~ LCD Programming 16 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 A good way to remember the new passcode would be to create a word using the first letters of the buttons. For example, using R ooms as the passcode would be the key sequence: routing, output, output, meter , system. The passcode must be five charact[...]

17 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Maximum Number of Mics This parameter sets the maximum number of microphones that can be gated on at any one time. This range can be set from one to eight microphones or off . The default setting is four . T o set the maximum number of microphones, [...]

Installation ~ LCD Programming 18 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Figure 2.9. Off Attenuation Hold Time This feature determines the length of time that a microphone remains On af ter the microphone audio level drops below the gate ratio (Figure 2.10 below). V alues range from 0.1 – 8.0 seconds in one-tenth secon[...]

19 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 If your room has ver y low ambient noise, set the decay rate to fast. This reduces the effects of echo and reverberation. If you hear ambient noise “ swoosh ” down while the microphones decay , set this value to either medium or slow . Manual Am[...]

Installation ~ LCD Programming 20 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Flow Control This parameter allows activation and deactivation of hardware flow control. The two options are on and off (default). T o activate the flow control, scroll to on and press Enter . T o deactivate it, scroll to off and press Enter . Modem[...]

21 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Input P arameters There are three main submenus under the inputs menu tree: Inputs 1 – 8, Input Global; Inputs A, B, C, D; and Subbus 1 – 2. Inputs 1–8, Input Global The parameter submenus below this level control how an input channel deals wi[...]

Installation ~ LCD Programming 22 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 adjustment is +20dB, but will adjust only +6dB. Adjustments will not be made at .5dB on either side of the target (0dB). High P ass Filter A high-pass filter can be selected on each gated input to reduce unwanted noise. The filter has a break freque[...]

23 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 AEC Reference There are two options for this parameter: EC R ef 1 and EC R ef 2. EC R ef 1 (default) references Output D (typically used for connection to a power amp and speaker). EC R ef 2 is not factor y set. EC R ef 2 is typically used in sound-[...]

Installation ~ LCD Programming 24 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Output P arameters There are two main submenus under the outputs menu tree: Outputs 1 – 8 and Outputs A, B, C, D. The two main submenus each contain the same menus at the next menu depth: gain adjust, mute, and NOM (Figure 2.16). Each parameter is[...]

25 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Routing Guidelines The audio matrix consists of sources and destinations. There are 25 possible input sources and 17 destinations. Internal Subbus Subbus 1, 2. The AP800 is equipped with two internal sub-mix buses. The subbus is a matrix output whic[...]

Installation ~ LCD Programming 26 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Figure 2.19. Echo Cancellation Setup Default Matrix EC Reference bus This bus provides a system-wide echo canceller reference signal. When multiple AP800 units are linked together and will be using only one output channel to drive the loudspeaker sy[...]

27 Installation ~ LCD Programming T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Figure 2.21. EC Setup for Multiple Units to One Output (Slave Unit) Meter P arameters There are five main submenus under the meter menu tree: Inputs, Outputs, ERL, ERLE, and default meter (see Figure 2.22). The first four submenus are all handled in[...]

28 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760[...]

T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 CHAPTER 3: AP - W are Sof tware Description AP - Ware software is an all-new system sof tware for Audio Perfect products. It replaces AP T ools sof tware in ClearOne ’ s software line. AP -W are provides increased configuration and system monitoring capabilities, and is straightfo[...]

AP -W are Software ~ Installing AP - W are 30 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 T o install AP - W are 1. Boot the PC to the Windows operating system. Ensure that all other programs or applications are closed. Insert the Audio and Video Products CD into the CD-ROM drive. If the Autor un feature is enabled on the PC,[...]

T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 When operating the AP800, there should be ver y little to do with the AP800 unit itself . Y ou can make changes quickly with AP -W are sof tware, if necessar y . If correctly installed and programmed, the AP800 system should not require any further inter face other than perhaps cont[...]

Operation ~ Control 32 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Muting T o mute an input 1. Determine which input needs to be muted, then press the Inputs button. 2. Scroll through to the desired input channel, and press Enter . 3. Scroll through the input parameters until Mute is visible, then press Enter . 4. Use the s/t[...]

T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Dimensions (LxDxH) 17.25" x 10.25" x 1.75" 43.8 x 26 x 4.5 cm W eight 7 lb/4.5 kg dr y 12 lb/5.9 kg shipping Operating T emperature 32 – 100 ° F/0 – 38 ° C Humidity 15% to 80%, non-condensing P ower Input Range Auto-adjusting 100 – 240V AC; 50/60Hz P ower Cons[...]

Appendices ~ Appendix B: W ar ranty 34 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 ClearOne Communications, Inc. (Manufacturer) warrants that this product is free of defects in both materials and workmanship. Should any part of this equipment be defective, the Manufacturer agrees, at its option, to: A. R epair or replace any [...]

35 Appendices ~ Appendix C: Compliance T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 warranty ser vice per formed on any product shall extend the applicable war ranty period. In case of unsatisfactor y operation, the purchaser shall promptly notify the Manufacturer at the address set forth below in writing, giving full particul[...]

Appendices ~ Appendix D: Connector Pinouts 36 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Control/Status A pinout Pin Number Definable* Status Default Description 1 Y es C Lock front panel toggle 2 Y es S Status of front panel lock 3 Y es C Mute all mics toggle 4 Y es S Status of mute all mics 5 Y es C Mute A output toggle 6 [...]

37 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Appendices ~ Appendix D: Connector Pinouts Control/Status B pinout Pin Number User Definable* Status Default Description 1 Y es C Preset 1 2 Y es S Status of Preset 1 3 Y es C Preset 2 4 Y es S Status of Preset 2 5 Y es C Preset 3 6 Y es S Status of Preset 3 7 Y es C Preset 4 8 Y[...]

38 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Appendix E: Accessories Accessor y ClearOne P art Number AP10 T elephone Inter face 910-150-201 T abletop Omni Microphone 910-103-160 (with cable) T abletop Uni Microphone 910-103-161 (with cable) T abletop Omni Microphone 910-103-162 (black button)/ 910-103-163 (white button) T [...]

39 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Appendices ~ Appendix F: Serial Commands The AP800 accepts serial commands via the serial port; the commands are then channeled along the G-Link network to all interconnected AP products. The commands provide the same control as the LCD menu str ucture, plus several others. The f[...]

Appendices ~ Appendix F: Serial Commands 40 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Note: Using the all-mic toggle might not produce the desired result, depending on the state the mics are in. For example, if one mic is muted and all other mics are not, an all-mic toggle would mute all others, but unmute that particular m[...]

41 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Appendices ~ Appendix F: Serial Commands AAMB This command changes or reports back the state of the adaptive ambient for a microphone. [DEVICE] AAMB <CH> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified microphone channel CH= * P arameter to app[...]

Appendices ~ Appendix F: Serial Commands 42 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 BA UD This command selects or returns the baud rate for the RS-232 port on the AP800. [DEVICE] BAUD <X> Explanation <X> X=1 Selects 9,600 baud (bps) rate X=2 Selects 19,200 baud (bps) rate X=3 Selects 38,400 baud (bps) rate X=N[...]

43 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Appendices ~ Appendix F: Serial Commands EC This command changes or reports back the state of the echo canceller for a microphone. [DEVICE] EC <CH> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified mic channel CH= * P arameter to apply command to[...]

Appendices ~ Appendix F: Serial Commands 44 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 FL OW This command selects or reports whether hardware flow control is enabled or disabled for the AP800. Hardware flow control is implemented using R TS and CTS. [DEVICE] FL OW <X> Explanation <X> X=0 Sets flow control to OFF [...]

45 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Appendices ~ Appendix F: Serial Commands GAIN This command changes or reports back the input gain for a channel. The command supports all inputs, outputs, and subbuses. [DEVICE] GAIN <CH> <W> <X> [<Y>] Explanation <CH> CH= 1-8 P arameter to apply to [...]

Appendices ~ Appendix F: Serial Commands 46 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 GMODE This command changes or reports back the gating mode for a microphone. [DEVICE] GMODE <CH> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified microphone channel CH= * P arameter to apply command to al[...]

47 Appendices ~ Appendix F: Serial Commands T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 LMO This command changes or reports back the setting of the last microphone on mode for each AP800. [DEVICE] LMO <X> Explanation <X> X=0 P arameter to set the mode to OFF X=1 P arameter to set the mode to Microphone #1 X=2 P ar[...]

Appendices ~ Appendix F: Serial Commands 48 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 MDMODE This command enables or disables the modem mode for the AP800. When the modem mode is enabled, the modem initialization string is sent out the serial port and the serial port now requires a password before a command is processed. No[...]

49 Appendices ~ Appendix F: Serial Commands T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 MHP This command changes or reports back the state of the high pass filter for a microphone. [DEVICE] MHP <CH> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified microphone channel CH= * P arameter to apply[...]

Appendices ~ Appendix F: Serial Commands 50 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 MP ASS This command sets the current password for modem mode. Note: The default password is a carriage retur n (enter). If the password is forgotten, it can be cleared back to a carriage return via the front panel. [DEVICE] MP ASS <STRI[...]

51 Appendices ~ Appendix F: Serial Commands T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 <OUTPUTMIX> OUTPUTMIX=hex word. The selected input will be routed to the outputs indicated. OUTPUTMIX=null. Mix Command to return the cur rent setting for the input. <OUTPUTMIX> Note: When entering the hex value of the <OUTP[...]

Appendices ~ Appendix F: Serial Commands 52 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 MUTE This command changes or reports the state of mute for a given channel. [DEVICE] MUTE <CH> <W> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified microphone channel CH= A-D P arameter to apply to [...]

53 Appendices ~ Appendix F: Serial Commands T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 NOM This command changes or reports back state of NOM attenuation for each channel. [DEVICE] NOM <CH> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified direct output channel CH= A-D P arameter to apply to [...]

Appendices ~ Appendix F: Serial Commands 54 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 PCMD This command programs or returns the program of the GPIO control pins from the serial port. COMMAND can be any valid command. These values are not part of the preset and do not change when presets are loaded. [DEVICE] PCMD <LOCA TI[...]

55 Appendices ~ Appendix F: Serial Commands T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 PEVNT This command programs or returns the program of the GPIO status pins from the serial port. The command line follows the same format as shown in the PCMD example above. [DEVICE] PEVNT <LOCA TION> <EVENT> Explanation <LO[...]

Appendices ~ Appendix F: Serial Commands 56 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 PP This command changes or reports back the state of the phantom power for a microphone. [DEVICE] PP <CH> <X> Explanation <CH> CH= 1-8 P arameter to apply to the specified microphone channel CH= * P arameter to apply comm[...]

57 Appendices ~ Appendix F: Serial Commands T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 UID This command returns the unique ID number , the device type and the device number of the AP800. This command is read only . The unique ID number is preprogrammed at the factor y and is unique to the unit, while the device number is set[...]

Appendices ~ Appendix G: SW orksheets 58 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Input A Input B Input C Input D G-Link Y Bus G-Link Z Bus G-Link X Bus Sub-bus S1 In Sub-bus S2 In Mic / Line 1* Mic / Line 2* Mic / Line 3* Mic / Line 4* Mic / Line 5* Mic / Line 7* Mic / Line 6* Mic / Line 8* Outputs G-Link Sub-bus Outputs [...]

59 Appendices ~ Appendix G: W orksheets T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Input Channel Output Channel Systemwide Parameters Auto Mix Parameters Clear Modem Password Timeout 0-15 (10) Enter Program Parameter Output Gain Adjust Mute NOM Selection Range -20dB to 20dB (0) On, Off On (A-D) or Off (1-8) 1 234567 A B C D [...]

60 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 D/A D/A D/A D/A D/A D/A D/A D/A D/A D/A D/A D/A A/D A/D A/D A/D A/D A/D A/D A/D A/D A/D A/D A/D Figure G.3. AP800 Block Diagram Appendices ~ Appendix G: W orksheets[...]

Glossary ~ A–D 61 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Acoustic Echo Cancellation (AEC) A process in which acoustical echo is removed from a signal. AEC can be used to remove unwanted signals from mic audio if the unwanted acoustic signal is available separately as an electronic signal. Adaptive Ambient Mode An autom[...]

Glossary ~ E–S 62 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 Echo Cancellation The process in which acoustic echoes are canceled. This is accomplished by sampling the distant audio that is amplified through the loudspeaker in the room. When this audio is picked up by the microphone (this is acoustic echo), an echo cancelle[...]

63 Glossary ~ T–Z T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 T elephone Hybrid A term used to refer to a telephone inter face that separates send and receive audio. Same as a digital hybrid. T wo Wire T ypically refers to a telephone line. Uni-directional Microphone A microphone that picks up audio in a directional (usuall[...]

Index ~ A–Z 64 T echnical Ser vices Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760 A adaptive ambient 19, 22 ambient level 1, 41 AP - Ware 29 automatic gain control 1, 21, 23, 39 B baud rate 42 C chairman over ride 42 clear password 20 command line 39 connector pinouts 36 Control/Status B 37 D default meter 20, 42 delay 20 device ID 15, 39 device [...]