Summary of Contents for A.W. Communication Systems DRC1
- Page 1 DRC1 Configuration Handbook to software Version 3.6 A.W. Communication Systems Ltd. Crook Barn The Crook Roweltown, Carlisle Cumbria CA6 6LH England Tel 44-(0)-1697-748777 Fax 44-(0)-1697 748778 www.toneremote.co.uk...
- Page 2 Part 1, Installation and Configuration. Forward Thank you for purchasing the DRC-1 desktop radio control unit. If used within the guidelines specified herein, the unit will provide trouble free operation without the need for service or repair. Repair Philosophy. The DRC-1 has been designed using the very latest microprocessors and employs specially written and tuned DSP software.
- Page 3 Connectors on the rear panel. Auxiliary Port Record / Playback Port Power Comms Headset Microphone Telephone Line (PW) Telephone handset On side of unit Power Supply Port. The unit requires 12vDC nominal supply, centre pin positive. It is recommended that only the supplied power supply unit is employed.
- Page 4 Headset Port. The headset port facilitates the connection of an operator’s headset used to achieve quiet operation at the dispatcher workstation. Microphone Port. The microphone port facilitates the connection of a desk stand microphone as may be employed in a taxi dispatcher work station. Telephone Port.
- Page 5 Desk Microphone Connector RJ11 Signal Notes Number Telephone select I/p Active Low Ground Microphone I/p Electret biased 10KΩ Active Low Ground Auxiliary +12vDC Limited to 500 mA ** see note Handset Connector RJ8 Signal Notes Number Microphone - Ear - Ear + Microphone + Comms Connector DB9F...
- Page 6 Auxiliary Connector DB9F Signal Notes Number Auxiliary +12vDC Limited to 500 mA ** see note Audio Out 0 600Ω balanced Audio In 0 600Ω balanced Auxiliary PTT Active Low Ops Busy Signal/or Alarm Active Low Ground Audio Out 1 600Ω balanced Audio In 1 600Ω...
- Page 7 After unpacking the unit, connect the handset to the main body using the cable supplied. Connect the power supply unit to the main body of the telephone and plug into an appropriate supply. The unit will initialise and display a welcome message before going into its operational state.
- Page 8 The Menu key has two functions. On first press it engages the menu system. Once in the menu system, the menu key acts as carriage return to agree and select the values set in the options field. Exiting the menu area causes the selected values to be stored. The scroll up and down keys move through the menu options, and pressing menu selects the desired option.
- Page 9 Set RX ack to close down call Set RX ack to interrogate Set RX ack to locate Set TX call code Set TX code for interrogate Set TX code for locate call Set TX code for close down Set TX code for ack to RX call Set TX ack to night service Ack timeout Set how long system waits for ack...
- Page 10 Increase line input level to 0dBm and check output level remains at –10dBm +2dBm-0. Theory Limiting within the DRC1 amplifier chain is set to start at around –10dBm. The initial setting process at –20dBm is undertaken at a level which will be well outside of the limiting range.
- Page 11 The Installation Menu in detail Emulation Mode The emulation mode provides the system programmer with the base station keying options. The DRC-1 has embedded software for Simoco and Motorola keying plus Dc keying. The options in order:- DRC-1 Hardwire PTT. The DRC-1 will use its open collector transistor to pull down the base stations PTT line.
- Page 12 Selcall Tone Length Press [menu] to select this item, use the scroll up/down keys to move through the options. Press [menu] to select desired option and then press [clear] twice to exit the menu system and implement the changes. Please note that pressing clear once will allow you to remain in the menu facility to continue configuration.
- Page 13 Call stack Options. The DRC-1 offers a call stack to store incoming idents. This menu facilitates how the calls are handled within the DRC-1. Select [menu] to access the menu item, then, use the scroll up/down to move through the options. When the desired option is opposite the chevron, pressing [menu] will select the option, then, press [clear] twice to store and exit the menu facility.
- Page 14 RX Vox Defeat Time The line input to the DRC1 has a Voice Operated Switch (VOX), which removes from the audio path constant line noise appearing on the line below the VOX level. The VOX switch is defeated on incoming calls which produce audio above the VOX level, but if the vox where to snap shut, pauses in speech may result in a fragmented message being heard.
- Page 15 This parameter sets how talk through is achieved. The options are local or remote. In local mode the audio for the transmitter is derived from that received by the DRC1 on its input line. When the TT key is selected, the DRC1 will operate the PTT signal when the incoming VOX is triggered, and also outputs to line the received audio.
- Page 16 By entering 123## in the RX code field the programmer has set 123 as fixed digits, and the DRC1 will not decode any number not prefixed in this way. The ## digits are variable and indicate the mobile identity.
- Page 17 If a code is set here, then the DRC1 will display “calling” and “connected” as the call goes out and the Ack comes back. If the Ack is not received, then the DRC1 will display “No Answer”. If a code is not set into this parameter, then the DRC1 will automatically display “Connected”...
- Page 18 TX Night Ack To RX In some systems the control room will not be manned 24 hours a day. The DRC1 has been designed to provide a “Night Service”, and this mode is engaged by operating the night key on the DRC1 keypad.
- Page 19 channel within the DRC-1. The playback audio may then be listened to in the DRC-1 loudspeaker and headset. Display Backlight The display backlight may be turned on and off by using [Shift-3] Selcall Alerts An audible alert tone is heard in the DRC-1 loudspeaker and headset each time a selcall code is decoded.
- Page 20 Motorola Tone Signalling. Within the Motorola tone signalling format, the controller sends three tones to the remote site every time PTT is operated or a function switch is operated. The tones are basically a high level guard tone (used to alert or wake up the base station) a function tone, and a lower level key tone which is the same frequency as the high level guard tone.
- Page 21 Hints and Tips Using filter Digits In Selcall. Where the DRC-1 is deployed on commercial (shared) radio frequencies, it is advisable to use fixed digits as part of the selcall string. The fixed digits act as a filter for the decoding system. For example, if the selcall pattern within the DRC-1 is set to ###**, then the DRC-1 will decode any five digit string which is received as 3 digits of ID plus two status digits.
- Page 22 Compliance. What Is RoHS ? The RoHS Directive stands for "the restriction of the use of certain hazardous substances in electrical and electronic equipment". This Directive bans the placing on the EU market of new electrical and electronic equipment containing more than agreed levels of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) flame retardants.
- Page 23 Menu Item Value Set and or alpha tag Emulation Mode Set Mic Gains Selcall Tone Set Selcall Tone Length Selcall Ident size Selcall Staus Size Selcall Codes RX call RX emergency call RX ack to TX call RX ack to Close RX ack to Interrogate RX ack to locate TX call...
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