Arcam Delta 280 User's Manual
Contents
1. 62 81 616 IF FUNCTION When several radio stations are situated close together on the FM frequency band a station with a strong signal can interfere with a weak adjacent station In order to receive the weaker station properly a modified IF Intermediate Frequency filter is required The IF function switches in a narrow bandwidth filter allowing the Delta 280 to receive the weaker station s signal satisfactorily To select the IF function press the IF button The IF LED will glow green To cancel press the IF button again AUTO Selects automatic or manual tuning see below The led will glow amber when AUTO is selected If the led is not lit manual tuning is selected V A Press to tune up or down through the FM frequency band In AUTO tuning mode the frequency display will stop automatically at a station with a suitably strong signal In manual tuning mode press and hold v or A until the desired frequency is displayed DISPLAY The FM frequency display signal strength meter and AUTO LED can be turned off by pressing DISPLAY To restore the display press DISPLAY again Please Note The two digit preset number display and the other LEDs are not affected by the DISPLAY function STORE For storing up to 20 FM stations into the preset memory To preset stations press STORE and while the led glows red press the desired preset button SHIFT The Delta 280 has two bank2. DELTA 280 TUNER HANDBOOK Technical Specification FM tuning range Tuning System Frequency step Presets Sensitivity IHF ternate channel selectivity S ppression ratio Capture ratio Signal Strength meter sensitivity Frequency response Ultimate S N ratio CCIR Mono Stereo Total harmonic distortion 96MHz refer Ono Stereo Channel Separation 1kHz Pilot tone suppression Output impedance inimum recommended load Output leve Power consumption Size W D H mun Weight Supplied accessories E amp OE 87 5 to 108 0MHz Phase locked loop 2 20 typically 1 4uV better than 60dB better than 50dB typically 1 54 4 segment LED typically 2uV to 2mV 20Hz 12kHz 0 5dB typically 2dB at 15kHz better than 75dB better than 72dB 22 5kHz deviation at 1kHz better than 0 1096 better than 0 30 using MPX filter better than 40dB better than 50dB 25ohm lkohm 850mV at 75kHz deviation 12VA 430 x 230 x 84 2 2kg nett 3 2kg packed FM dipole aerial plug adaptor mains lead CR25 Handi Remote control F Type aerial adaptor OsHdiNv3 38 150 3ONVITddy SIHL j ONINSVM ZH 9 8S SEITE OLIVISLINN 350 Em 39IAB3S NOILOVO IAE BAUEN 03 VORNE OWO EM NANG Si e HUM SATO ABFT ABTT 640 LON 00 OWZYH MOLLY Z WwINV I vna3v 6 1 1000W SHL SMEREN OOV Y3MOd wanna mi 082 9
3. ed the memory will be retained for approximately one week REMOTE CONTROL FUNCTION The Delta 280 tuner has been designed to work with both the Arcam System Remote and Handi Remote handsets The System Remote accesses all functions except automatic tuning The Handi Remote can select presets turn the display off and control Mono or Stereo mode RADIO INTERFERENCE The Delta 280 tuner is a digital device which has been designed to very high standards of electromagnetic compatibility COUNTRIES This product has been designed to comply with directive 89 336 EEC USA This product complies with FCC requirements Please refer to the Hints and Tips booklet if you suspect a radio interference problem SAFETY STANDARD This product has been designed to meet the IEC 65 international electrical safety standard FOR YOUR INFORMATION The BBC publishes a booklet entitled Radio Transmitting Stations which contains details of all BBC transmitters in the UK together with other useful hints and tips This booklet can be obtained on request by sending a large stamped addressed envelope to BBC Engineering Information White City 201 Wood Lane London W12 7TS Tel 01345 010313 local call rate The Radio Authority publishes a booklet which contains details of all independent radio stations This booklet can be obtained on request by sending a large stamped addressed envelope to Radio Au
4. interconnect cable The other pair can be connected to ahi fi VCR s audio input for recording simultaneous broadcasts simulcasts or to a cassette deck for direct recording Insert the red phono plugs into the sockets labelled R and the other phono plugs into the sockets labelled L AERIAL CONNECTIONS amp AERIAL SOCKETS Connect your aerial downlead using the supplied adaptor if necessary Two aerial sockets are provided enabling you to use two separate aerial sources eg for terrestrial FM broadcasts and Cable radio With the aerial selector switch IN only the Aerial One input will be used for all 20 presets With the aerial selector switch OUT Aerial One will be used when preset 1 10 are selected and Aerial Two when presets 11 20 are selected OPERATION MONO Selects mono or stereo output The led light emitting diode will glow red when mono is selected If a weak station is received in stereo the background hiss can be reduced by selecting mono STEREO LED Indicates stens reception When tuning through the FM frequency band in stereo auto or manual inter station noise and very weak signals are automatically muted To cancel muting select mono output see MONO 9 FM FREQUENCY DISPLAY Indicates the frequency of the selected FM station PRESET MEMORY BACK UP The preset memory will be retained while the tuner is connected to the mains If the mains supply is disconnect
5. rovided is only suitable for reception of strong local stations INSTALLATION Check that your mains supply voltage agrees with the voltage setting on the rear panel of the unit If your mains supply voltage is different consult your Arcam dealer MAINS SAFETY This product is normally supplied with a moulded mains plug already fitted to the lead If for any reason the plug needs to be removed it must be disposed of immediately and securely as it is a potential shock hazard when inserted into a mains socket If the plug is removed then the remaining lead must be rewired as follows The blue wire must be connected to the terminal which is coloured blue or marked with the letter N The brown wire must be connected to the terminal which is coloured brown or marked with the letter L The green and yellow wire must be connected to the terminal which is coloured green and yellow or marked with the letter E or the safety earth symbol When replacing the fuse in the supplied moulded mains plug the integral fuse holder cover must always be refitted Warning earthed This apparatus must be MAINS SUPPLY CONNECTIONS Insert the line socket of the mains lead fully into the power inlet on the rear panel Connect the other end to your mains supply AUDIO CONNECTIONS AUDIO OUTPUTS Both pairs of outputs are identical Connect one pair of them to your amplifiers TUNER input using a suitable
6. s of ten presets Choose the required bank by pressing the SHIFT button Presets 1 10 can be selected when the SHIFT led is off and presets 11 20 when the led is on Note After pressing SHIFT to change the preset bank it will still be necessary to press the required preset button to change channel SCAN Plays approximately 5 seconds of each of the 20 presets in turn If you wish to continue listening to one of the scanned stations press the relevant preset button Pressing either STORE A tune up or v tune down will cancel the SCAN function PRESET BUTTONS Once all the stations have been preset into the memory simply press the relevant button to select the desired stations Use SHIFT when selecting preset stations 11 20 POWER Switches the unit on and off PRESET DISPLAY Displays the preset number of the selected station SIGNAL STRENGTH METER Indicates signal strength of the selected station As several radio stations are available on more than one frequency use the signal strength meter to help you locate the best position for each station As a guide two amber leds and two green leds will give adequate stereo reception All eight leds will give the best stereo reception with the least possible background noise In most cases you will need to use a roof mounted aerial connected to the tuner with a good quality low loss 75ohm co axial cable to achieve the best results The simple wire dipole aerial p
7. thority Holbrook House 14 Great Queen Street London WC2B 5DG Telephone 0171 430 2724 ARCAM Pembroke Avenue Waterbeach Cambridge CB5 9PB England Telephone 01223 440964 Fax 01223 863384 Issue 395 1 SH050
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