GETTING STARTED continued
E1 MANUAL
MEMORY FUNCTIONS
PBT knob will cause ‘AM SYNC’ to flash on and off temporarily until the system once again locks on to the desired carrier.
FM OPERATION
FM receptionetón is perhaps the easiest mode to use on
the E1 receiver. The AGC and BANDWIDTH set- tings are not used in FM. In fact, all of the function softkeys along the bottom edge of the display except the ‘MENU’ softkey have no function on FM and the labels on the display for these softkeys disappear. Attempting to use one of these softkeys will result in an ‘ERROR’ beep. All FM stations in the U.S. end in an
odd 100 kHz,etóni.e. 97.7 MHz, and are spaced 200 kHz
apart. The E1 receiver has the ability to tune in 20 kHz steps to allow tuning in between stations to help eliminate interference to weaker stations that could be covered up by stronger adjacent stations. Additionally, when headphones are used, or if the LINE OUT jack is fed into an external stereo sound system, true stereo reception is possible. The ‘STEREO’ indicator on the display will appear when a stereo station is tuned in. ‘MONO’ will appear in this location if the transmitting station is not in stereo, if no signal is being received, or if MONO is selected from the AUDIO SETTINGS menu. To select between STEREO and MONO from the AUDIO SETTINGS menu, proceed as follows:
•Press the ‘MENU’ softkey.
•Press the
•Press the
When STEREO is enabled, the receiver will automati- cally switch to stereo and provide left and right audio from the HEADPHONE and LINE OUT jacks when a stereo FM signal is being received. If the headphones are removed while listening to a stereo broadcast the receiver will provide monaural audio from the internal or an external speaker.
AGCetónOPERATION
The E1 receiver provides the ability to select a SLOW, FAST, or AUTO AGC setting. Each of the three settings will permit automatic control of the receiver’s gain thereby producing a constant audio output free of distortion. Generally, the SLOW AGC setting is pre- ferred for reception of AM and SSB signals. The FAST AGC setting allows more rapid automatic receiver gain adjustment to quickly fading signal levels. The AUTO setting provides FAST AGC while tuning between sta-
tions to prevent the user from missing weak stations between strong ones. However, once a station is tuned in, it automatically switches to SLOW for smoother audio output. The AGC does not function in the FM mode.
MICROPROCESSOR RESET
A
and timer settings will NOT be lost undetónr a
reset due to the memory design of the E1 receiv- er.
BEEPetónTONES
The E1 receiver responds to nearly all key depres- sions with an audible beep unless the beep has been disabled by means of menu entry 2 in AUDIO SET- TINGS menu. This menu is accessed by pressing the ‘MENU‘ softkey three times, or by pressing the ‘MENU’ softkey once to access the MAIN MENU, and then pressing the
•One short tone for a key depression.
•One short, high tone when storing a MEMORY or COUNTRY channel.
•One long, low tone for any illegal key depression.
•Four quick beeps at one minute intervals if batteries are installed, an external power source is connected, and the external power is lost.
This feature must be enabled from AUDIO SETTINGS menu item 3. Note that the volume of the beep tones is controlled by the ‘VOLUME’ control, so if the ‘VOL- UME’ control is turned all the way down, no beep tones will be heard.
MEMORY DESCRIPTION
The E1 receiver contains 1700 memory channels that can be used to store and recall commonly monitored frequencies. The first 500 of these are referred to sim- ply as MEMORY channels. The remaining 1200 are referred to as COUNTRY channels. More on COUNTRY in the next section. The 500 MEMORY channels are displayed in groups of 10 per screen and each saved frequency can be stored with an identifying name. They can be scanned using the SEEK function which can stop on any stored channel that has a predetermined signal level, or the MEMORY channels can be scanned selectively using the T.SCAN function. With MEMORY channels programmed, you can use the T.SCAN func- tion to selectively monitor desired MEMORY frequen- cies. The following operating parameters may be stored in any MEMORY channel: (1) Frequency, (2) Mode, (3) Bandwidth, (4) AGC setting, (5) PBT setting, (6) Synchronous Detector setting.
THE MEMORY DISPLAY
Please refer to the numbered figure above.
1. Channel Frequency
This is the frequency that is stored in the selected MEMORY channel.
2. MEMORY
This indicator identifies the screen as a MEMORY dis- play as opposed to a COUNTRY display.
3. Curser
This reverse video segment identifies the selected MEMORY channel. This Curser is moved up or down through the ten displayed channels one at a time using the ‘TUNING’ knob or a page at a time (10 channels)
using the ‘< SELECT >’ key. If the ‘FAST / TUNING LOCK’ key is pressed, the ‘TUNING’ knob will scroll through the channels ten at a time.
4. T
This indicator marks this channel as being one selected for T.SCAN. T.SCAN searches through all MEMORY and COUNTRY channels marked with the ‘T’ and will ignore all others. T.SCAN will stop in any channel marked with a ‘T’ which has a signal strength greater than the SQUELCH setting. It will proceed to the next marked channel either based on a 5 second time interval, or will stay on the channel on which it stopped until the ‘T.SCAN’ key is pressed again. Which of these T.SCAN methods is used is determined by setting 2 in the RADIO SETTINGS menu. The “T” tag is added to or removed from the MEMORY channel on which the curser rests by pressing the ‘TAG’ key.
5. Channel Numbers
These numbers identify the memory channels from 1 to 500, ten at a time. When the curser reaches the end of a group of ten, the numbers displayed advance by ten. For example if the curser were sitting on 10, and the right hand ‘< SELECT >’ key was pressed, the curser would jump to the top of the column with numbers 11 thru 20 displayed.
6. Function Key Labels
These labels, with their associated parameters, disap- pear if you scroll through a channel that is pro- grammed on an FM band frequency.
7. MEMORY
The ‘MEMORY’ softkey label appears as “MEMORY” when the softkey is pressed, indicating that MEMORY
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