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The mode is not stored in Serial EEPROM and defaults to number mode on power up. The display is

updated every second for either mode.

Note:  The Channel signal to noise ratio display can produce false readings if the input modulation

exceeds about 4 kHz bandwidth. If you are using the Channel S/N ratio for comparisons,  take the reading with

no modulation.

 Value = 255
Signal / Noise

o r

 Value = xxxxxxxxxx
Signal / Noise

Hits per Chan:

The Hits per Chan menu shows the number of times a channel has been voted out of the last 100 COR

cycles. A COR cycle is the time from when any site becomes active to the time no sites are active. The hits for a

site is incremented if that site has been selected the most during a COR cycle (a site can be temporarily voted

during a COR cycle, but the hits for that site will not be incremented unless it has been voted the most during

that COR cycle).

The maximum number of hits on any channel is 100. Sites that are not selected at the end of a COR cycle

are decremented by one. For example, if the current hits are: site one - 57, site two - 28, site three - 12, and

site two is voted for the next COR cycle, the result is: site one - 56, site two - 29, site three - 11.

The Sel switch is used to cycle through each site. The LCD will display the channel number and the

number of hits.

The Hits per Channel is not stored in Serial EEPROM and all channels default to zero hits on power up.

Chan 01 Hits 64 
 Hits per Chan

Most Active:

The Most Active menu keep tracks of the hits per channel for each channel and displays the site with the

most votes out of the last 100 CORs. An internal count is kept on each site for the number of times it has been

voted. The site that has the most votes in the last 100 COR cycles is chose. If more than one site has the most

votes, the first site with the most counts encountered by the software will be chosen.

Sites that are disabled are not eligible to be selected as the Most Active site.

There are no user inputs for this menu.

1
 Most Active

5

Содержание RVS-8

Страница 1: ...LDG Electronics 1445 Parran Road St Leonard MD 20685 Phone 410 586 2177 Fax 410 586 8475 e mail ldg radix net Web site www radix net ldg RVS 8 Repeater Voting System Assembly Manual Ver 2 1...

Страница 2: ...e it became apparent that component spacing was too tight and the PC board was expanded for ease of construction and use A larger LCD module is now provided We were able to find a source of larger bac...

Страница 3: ...lled RP1 5 For markings 103 means 10K and 104 means 100K Then the crystal Use a left over piece of resistor lead to tie it down with holes provided on either side of the crystal This will keep it from...

Страница 4: ...d Don t wear a wool sweater brush your feet across the carpet pet a cat then try to install the chips Reapply power The voltage check should stay the same and the current draw should be around 80 to 9...

Страница 5: ...ition one site two is in position two ect On power up site one will be chosen for the default The display is updated when a new site is chosen as the current voted A site can not be selected as the cu...

Страница 6: ...ber of hits on any channel is 100 Sites that are not selected at the end of a COR cycle are decremented by one For example if the current hits are site one 57 site two 28 site three 12 and site two is...

Страница 7: ...ber can be viewed with the Channel S N menu Each step of the hysteresis level is equal to 6 counts of the internal number A hysteresis value of 5 means that a new signal must be 30 counts 5 times 6 hi...

Страница 8: ...ing device will provide a low going voltage 0 0 to 4 5 volts when the channel is to be disabled and a high going voltage 6 5 to 20 volts when the channel is to be enabled The DIS Active State menu sho...

Страница 9: ...r channels will float to zero volts The software provides a special counting function that keeps track of the voted sites during a COR cycle Just before the COR cycle ends about 1 mSec the output sele...

Страница 10: ...for each site The calibration procedure described here will give you good performance while maintaining a minimum amount of time and test equipment required First transmit a 1000 Hz tone at 2 5 KHz d...

Страница 11: ...k If there is no clock this may also indicates that the code is not executing Look around the sockets and connections between U1 and U2 for problems If there is still no LCD data look at the data line...

Страница 12: ...kaging to return the unit to you Include a description of what problem you are having and a phone number you can be reached at in the evenings in case we have questions Repairs average about 3 to 6 we...

Страница 13: ...ftware The RS 232 interface is not used with this version of the software The MAX 232 chip socket or the 4 1 0 uF electrolytic caps are not provided We had originally planned to add software for RS 23...

Страница 14: ...ssor 0 V 0 V 0 V 0 V Test Point Aud 1 Test Point A D 1 Pin 2 of U11 Figure 1 Sample Waveforms for Alignment Audio In TP Aud 1 Pin 2 TP A D 1 1 KHz 2 V p p 1 V p p 0 1 V 3 KHz 2 V p p 1 V p p 2 0 V 5 K...

Страница 15: ...J8 LCD Interface J5 Audio In J4 COR IN J3 Disable In J6 Output Select J2 Audio COR Out J1 Power J6 Output Select Gnd 7 5 3 1 12 8 6 4 2 10mA 1 2 3 4 5 6 Gnd J7 User Interface Power LED COR LED Data S...

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Страница 19: ...n Screw Conn 3 Pin Screw Conn Heat Sink Shunt Ribbon Conn PC Board Bolt Nut Spacer RVS 8 Parts List Quantity 1 1 1 1 2 3 1 2 24 18 9 8 2 3 2 8 12 9 4 3 1 3 1 18 1 1 1 1 1 1 2 1 1 3 4 4 1 2 1 1 2 10 1...

Страница 20: ...or on the STRB line of the X68C75 chip U2 A 2 2K resistor is provided with the kit to be used here any value between 1 K and 100K would work The resistor goes between pin 37 of U2 to the grounded pin...

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