AORar82002AORar82002, Instrukcje schematy rozne KF cb-radio
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Section 5, 5-1 (5) Memory channels & banks It is convenient to store commonly used frequencies into a memory channel along with mode etc, this saves having to key the data in over and over again. Memory read is very straightforward and quick when compared to re-typing all data. 5-1 Memory channel overview Think of memory channels as pages in a notebook each of which is numbered to identify it. Data may be written to each new page (memory channel) and each page may be overwritten with new data, they can be used over and over again. The AR8200 has 1,000 memory channels in addition to 10 ‘quick memory’ channels and a priority channel . Each memory channel may hold: one frequency l receive mode l tuning step l step-adjust l frequency offset l attenuator setting l noise limiter status l AFC status l pass status l write protect l text comment of up to 12 characters The alphanumeric comment may be used to ease identification at a later date and to provide text search facilities. The 1,000 memory channels are divided into 20 banks, each initially having 50 channels. The memory banks are identified by letters A, B, C, D, E, F, G, H, I, J (upper case letters) and a, b, c, d, e, f, g, h, i, j (lower case letters) and initially numbered from 00 to 49. Examples are “ A00 ” for the first channel location in memory bank “ A ” and “ A49 ” for the last memory channel in memory bank “ A ”. “ e15 ” is the location of memory bank “ e ” (lower case) channel “ 15 ”. During the manufacture and testing of the receiver, various test frequencies may be entered into the receiver’s memory banks so the memory locations may not be completely blank. & Note: Where memory channels and banks are empty the indication “ - - - ” is often displayed. The stored data may be quickly and easily recalled, changed or deleted using the memory recall, edit and delete facilities. Note: It is suggested that one or two frequencies be held in each memory bank to make the recalling and scrolling of memory banks fluent, if no data is stored, the AR8200 may take up to 5 or 6 seconds to respond when attempting to change memory bank while the CPU checks for data. 51 l & Section 5-1, 5-2 Auto-store When shipped from the factory, memory bank “ J ” is reserved for auto-store of memory channels from search mode. This is a useful facility to quickly build a list of active frequencies. Please refer to section 8-7-5 of this manual for further information regarding AUTO-STORE. Dynamic memory bank resizing The lettered memory banks are regarded as a ‘pair’ making a total of 100 memory channels per bank, initially equally divided between the upper and lower case letters. It is however possible to reallocate the 100 channels in blocks of 10 channels between the same letters A/a, B/b, C,c etc This means that the initial 50/50 may be reallocated as 60/40, 70/30, 80/20, 90/10, or 10/90, 20/80, 30/70, 40/60. This ‘dynamic’ memory reallocation can be useful to optimise the memory layout where a large or small collection of frequencies need to be monitored without unnecessarily wasting memory banks with just a few channels occupied. Write protect It is possible to write protect individual memory channels to prevent accidental deletion, whole memory banks and a ‘global’ write protect facility are also available. Memory backup The data contents of memory and search banks are held in an flash-ROM so that no backup battery or capacitor is required for memory retention. Note: When the AR8200 is switched OFF, all VFO data will be automatically stored. Should the NiCads (or dry batteries if in use) become completely exhausted, the last stored memory channel or last VFO data ‘may’ be lost if the AR8200 is not powered-down using the key and insufficient power is available to save the data. 5-2 Storing VFO frequencies & data into memory It is possible to save frequencies to the ten quick memories for simple recalling but for longer-term storage, the 1,000 main memory channels offer a better and more flexible system. The process to save a displayed VFO frequency to memory is as follows: a) In VFO mode, select the required frequency, mode, attenuator etc b) to initiate memory write c) Use the keypad, main dial or ïðñò keys to select the desired memory location (BANK and CHANNEL) d) Add a text comment (optional) or delete an existing comment e) Add memory channel write protect (optional) f) Exit the menu to save the data to the specified memory location Lets assume that you wish to store the frequency of 123.500 MHz (with the attenuator off, noise limiter off, AFC off) into memory bank “ E ” location “ 25 ” (E25) while in VFO mode with the text comment of “ AIRBAND ”. If a mistake is made during programming, the key to abort entry and return to 2VFO mode. a) Start by selecting VFO mode then key in the frequency of 123.500 MHz, “mode and step size” are set to the default auto “ AUT ” (if not use the key sequence ) 52 & Section 5-2 to place the AR8200 into VFO mode. to select the desired frequency, the mode and step size will be automatically set by the AR8200 microprocessor. b) the key for more than one second to enter ‘memory input’ mode. One line up from the bottom of the LCD will be the legend “ M-WRITE ” with the highlight cursor positioned to the left of the bank identification letter such as “ j ”. The microprocessor will automatically select the youngest free memory location. c) You may change the bank identifier at this time by pushing the ï ð You will notice that to the right of the keypad numbers, there are small orange letters which are bank identifiers, available memory locations are A - J and a - j . Key 1 is “ A ”, key 2 is “ B ” etc, ignore the letters K - T as these are used in search mode only. The lower case bank identifiers may be accessed pushing the CASE SHIFT key Remember, if you take too long entering data (90 seconds) the display will revert to it’s original condition of 2VFO mode, if you are selecting the memory location via a three digit key sequence, you only have 2 seconds before the keypad times-out! Assuming that you wish to store 123.500 MHz into “ E25 ” to select bank “ E ” then select the channel, for “ 25 ”. If any data is already stored in location “ E25 ”, the bottom line of the LCD will flash with the stored frequency. You may accept & store the data (by pushing or add a text comment at this point (see below). d) To add the text comment “ AIRBAND ”, ò then use the main dial to select the text and the ï ð keys to move position of text input. A maximum of 12 characters may be added to each memory channel, it is recommended that a minimum of three be used for efficient use of the text search feature (a minimum of 2 characters are required for text search). Refer to section 12 of this manual for details of text search and section 13-2 for short cut text input). 53 keys or by typing in a three digit memory location using the numeric keypad. Section 5-2, 5-2-1 If the memory location has been used previously and a text comment is displayed, to delete the existing comment. Note: It is possible to use keypad short cuts to select text characters, please refer to section 13-2 of this manual for further details. You may accept the new frequency and text comment “ AIRBAND ” by pushing or you may add memory channel write protect (see below). e) To add the memory channel write protect, ò to access the “ PROTECT ” menu, the default is off. to toggle the status to “ ON ”. To accept the input and store the data to the specified location, . The display will revert to 2VFO mode. Important note: It is suggested that you do not use the write protect facility until you are familiar with the operation of the AR8200 as it will prevent certain functions being carried out at a future time. 5-2-1 Another example of memory write Let’s assume that you wish to store the frequency of 433.000 MHz auto-mode into memory location “ d10 ” with the text comment of “ 70cm ”. a) to place the AR8200 into VFO mode to select the desired frequency. b) to initiate ‘memory input’ mode. keys and using the main dial for channel number, or by typing in a three character memory address using the numeric keypad. ï ð Assuming that you wish to store 433.000 MHz into “ d10 ” which acts as the CASE SHIFT key to select the lower case banks then to select bank lower case “ d ”. Next select the channel for “ 10 ”. If any data is already stored in location “ d10 ”, the bottom line of the LCD will flash with the stored frequency. You need to carry out this key sequence fluently within 2 seconds or the bank location will time out. The 2 second time out does not apply when the bank and channel are selected using the main dial and ï ð keys. 54 & & c) Select the bank by pushing the Section 5-2-1, 5-2-2, 5-3 To recap: Once the three digit memory location has been selected, the 2 second keypad time-out does not apply to the rest of the sequence. d) To add the text comment “ 70cm ”, ò then use the main dial to select the text and the ï ð keys to move position of text input. To accept the new frequency and text comment “70cm”, , if you wish to add write protect ò to access the PROTECT menu. & Note: If the memory location has been previously used and a text comment is displayed, to delete the existing comment. e) In the write protect menu, to toggle the status to “ ON ”, the default is off. To accept the input and store the data to the specified location, . The display will revert to 2VFO mode. 5-2-2 Automatic memory allocation When you to start the memory write sequence, the AR8200 will initially offer the first available empty memory location which has no data stored in it. to accept the channel offered or choose another location as described in the previous sections. Alternatively you may the ò 5-3 Memory write protect As indicated in section 5-2 , it is possible to write protect memory contents to ensure that important memory channels are not accidentally over-written. It is important to remember that by write protecting a memory channel, it may prevent certain facilities from being used (such as over-writing the memory channel or copying / swapping memory data to it). The memory protect status may be assigned as the last stage of memory write (as per section 5-2 of this manual) or toggled on/off using the memory channel EDIT facility, refer to section 9-6 of this manual regarding memory channel EDIT facilities, in particular MEMORY PROTECT. It is also possible to write protect a whole memory bank, this prevents accidental deletion of data when resizing memory banks. 55 key to add a text comment then complete memory write by pushing . If the AR8200 has to look through many full memory channels before an empty channel is located, the message “ MEM WRITE SEARCH BLANK CH ” may be briefly displayed. [ Pobierz całość w formacie PDF ] |
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