Satwork ST3688 "The most powerful small receiver on the market"                          Scroll down for programming notes

The first receiver allow for blind search by satellite.  This one does it all. 

Satwork ST3688

Features:
bulletBlind Search
bulletAuto Search
bulletEasy Operation
bulletNormal Scan
bulletManual Scan
bulletFully DVB-S / MPEG II Compliant
bullet4200 Channels Memory Space
bulletPAL to NTSC conversion
bulletNTSC to PAL conversion
bulletFavorite Groups Channel Organization
bulletPIG Channel Selection (Picture In Graphic)
bulletSCPC & MCPC receivable from C/Ku
bullet256 Colors on Screen Display (OSD)
bulletDiSEqC 1.2, Voltage (14/18V), Tone (22K) and 0/12V LNB switching support
bulletVBI Teletext Support
bulletRF Modulator
bulletGames
bulletEasy Software Upgrade by: PC to STB, STB to PC, STB to STB
 

Remote Control

MUTE Mutes Audio Output of the reciever
POWER Turns the receiver on/off
PAUSE Change video to pause state
EPG View the Electronic Program Guide
INFO View Channel information
0-9 keys Direct channel change
TV/RADIO Switches between TV and Radio
EXIT Exits menu or cancels operation
OK Activates the highlighted menu
Displays channel list
UP/DOWN Changes channels
Moves the cursor up or down in menus
LEFT/RIGHT Controls volume
Changes values in menu
RCL Recalls last channel
MENU Opens menu or sub-menu
AUDIO Lists audio language for current channel
TEXT Lists subtitle languages

Specs:
IF input frequency 950~2150MHz
Input impedance 75
LNB power supply 13/18V/OFF, Max. 400mA
Input level -65dBm ~ -25dBm
Waveform QPSK
Symbol rate 2~45MS/s
Roll off factor 0.35
Reed Solomon decoder RS(204, 188,8)
Viterbi decode rate 1/2, 2/3, 3/4, 7/8, auto
Connector type "F" connector
Sampling frequency 32,44.1 or 48 KHz
Demultiplex CD ISO/IEC 13818-1
Input max. bit rate 60Mbps(serial)/7.5Mbps(parallel)
Standard CD ISO/IEC 13818-2, MPEG-2 MP@ML
Video aspect ratio 4:3 or 16:9
Resolution Max. 720 x 576
Standard ISO/IEC 13818-3 Layer I & II
Audio Channel Mono, Dual-channel, Stereo, Joint Stereo
Sampling frequency 32, 44.1, 48 KHz
CPU STMicroelectronics STi5518
Clock frequency 81MHz
SDRAM memory 8M bytes
Flash memory 1M bytes
Connector 9-pin D type, female
Protocol RS-232 asynchronous
Baud rate Maximum of 625K bps
Video de-emphasis CCIR REC.405-1, 625 lines
Video bandwidth 5.5 MHz
Video output level 1.0 Vp-p

Programming the 3688 (revised)

First RTFM; that is read the fine manual!  Below are some programming notes that I made while programming the ST3688.  If your receiver has been preprogrammed by Taylor Enterprises you can skip the first steps. Press menu and you will see the main menu; 

 

Scroll right highlighting installation (right). Choose "Antenna Installation" press "ok", press "ok" again.  This will open list that you will add satellite names to.  Scroll to the right and down until you find the name of the satellite you wish to place in memory. If you think you are on a bird you can choose any satellite name and do a blind search, but first lets find Telstar 5 Ku. In the second picture above we have selected Telstar 5 and are about to add G10. After you have created your satellite list, exit  twice and save  and select "antenna configuration", "ok". This is where you set all your switches, say you want to have several antennas or even a c and a ku lnb.  I have selected the first bird T5 and changed line 2 to read Ku.  This will enable the receiver to scan faster At this point you may have to create more then one listing for each bird, say T5 c and T5 ku.   If your receiver was preprogrammed to Taylor Enterprises  skip to here.  Now let us find Telstar 5  Ku.  Highlight "Transponder Manager"( from menu, installation) and press "ok".  Scroll down to a transponder that you know is active.  I have chosen ll836,  I then pressed the green edit button to confirm that it indeed had a symbol rate of 20765 and the polarity was V.  You can find a list of active channels and transponders at http://www.lyngsat.com At this point you can begin moving your antenna around watching for the quality bar to run up to about 35. You will not see 100% with this unit, it is the way the software is set up and has nothing to do with the quality of the unit. On this model receiver the color of the bar does not change.  When the receiver recognizes a group of channels with the freq. and sr. the quality bar moves . Picture 4. Ku is always a frequency from 11700 to 12200.  If your receiver was loaded with T5 channels from your dealer you can exit and save out of all menus and start watching tv. If not you can scan just the bouquet you found by pressing exit once then the purple scan button.  This will quickly confirm that  you indeed have found the right bird.  To scan for all of the channels on Telstar 5, exit to the main menu and choose from installation, satellite scan. Press ok to place a check beside Telstar 5 and press the purple button to open up the scan screen. Initially you will see the following and if you press ok again your receiver will scan all of the known transponders in the receiver's memory  HOWEVER;  if you scroll to the right and select "Blind Scan" the receiver will do it famous  find everything search.  You will remove whatever is in memory on the bird you are scanning, but this is the best way to  start.  If you want to add just one transponder without loosing what you have already found such as transponders that are off the air you can do this by choosing "Add" under "Transponder Manager" and scan from the "Transponder Manager" just that transponder.

Warning,  if you go into the channel folder, and select channel manager and delete all, you will loose all of your channels on all satellites.

Observations;  When rescanning a satellite this receiver may delete stations that have been already found and are not seen due to changing polarity on the master receiver.  Deleting helps to keep the receiver from being loaded up with hundreds of useless channels.  If you have the receiver slaved to another receiver controlling a big dish, you can first scan all of the horizontal channels and note the transponder numbers of channels you want to save and then scan the Vertical side.  Now go back and rescan the active horizontal channels by going to "system settings" "transponder manager". You can also list the same satellite more then once, using one for H and one for V or  one for C and one for Ku..

 

Satwork ST3688 with  SG 2100 H to H motor;   Set up the mount and motor as instructed in directions that came with the motor.  Be sure the mount that the motor is mounted to is plumb.  Aim dish south using a compass by swinging the mount on the pole.  From the remote press "menu", and scroll to "Installation" then "antenna configuration", "ok".  This opens a new screen.  At this point you will want to make sure that you are on a fairly low satellite like Telstar 5 ku and the transponder is set to a know active satellite such as 12152 or 12177.    Scroll down to DiSEqC  and press the right arrow to "motor" and press the green button on your remote which will open a new screen to the right.  NOTE:  if you check more then one satellite in satellite scan (above) the receiver will scan all the satellites going automatically moving from the dish to each satellite it scans.  If you rescan a satellite the receiver will usually not double list a channel if the channel is already in memory.  When adding a new satellite your 3688 may try to guess where the satellite is and move the dish to the new location.  Sometimes it is right.  

From "set limit" choose east and from line one move the positioner to a point to to the east that is just past the maximum point that you think you will need to swing the dish, then store the position. Do the same for the west.  Setting limits is not necessary. With the receiver set to a know active transponder, move the dish toward the position of the satellite  which will be to the west in all places east of about Oklahoma City or the east from the west coast.  Now comes the tricky part.  You will have to swing the mount back and forth on the pole slightly while running the motor east and west.  This helps to put the dish on the arc.  If you have a meter, this will help to identify the location of the arc containing the satellites.  When your dish hits Telstar 5, you will see the quality bar turn red and move to about 40%. Be sure that you are on an active transponder,  see above. I have scrolled down to "transponder" and chosen 11836.  you may need to temporarily exit the right screen. You have now found t5 and the magic arc.   When you find the bird a screen may tell you that you have found a satellite.  use the second line to max the bird and store the position.  Now try a lower satellite such as G10.  Once you have found a lower satellite, you should not ever have to move the mount on the pole. You may need to slightly move the motor to repeak  the dish. Now go through and place the rest of the birds in memory.  See page 4. in your direction manual.  Your manual may give slightly different directions but this menu usually works for us.

 

Note;  When using DiSEqC switching be sure to go to Antenna Configuration and set the switches from the DiSEqC line.  You may use Tone A and B for a 2x 1 switch or use DiSEqC A,B,C,D.  Hook up the switches and then power down the receiver and kill the AC.  Switch on the back of the receiver will do it then start it up.  Your receiver is a computer and may need to be cold booted to recognize the  DiSEqC switch.  When you have say a C and A Ku band  feed, like when slaving to a big dish system you can create 2 satellites, one for C and One for Ku.  From Antenna installation make satellite 1  Galaxy 10 and set it up as Ku and satellite 2  Galaxy 10 set up as Ku. The receiver remembers satellite number one and two, not the names of the satellite.    

For additional help see The magic Rainbow!  Also look at Troubleshooter.

If you have problems with the picture rolling, black and white etc. someone has put the receiver into PAL or European mode, the receiver does NOT just go to PAL mode. Important, power receiver off  with the switch on back or pull the power plug.  This will assure that you start each menu at the first selection.   The fix is as follows; Press Menu, then the right arrow twice to open the System Setting Box,  Down arrow 4 times to TV Setting  (Don't  forget to power off first) Warning to not go to the box below and put it into Factory Default which is not covered under warrantee. Now that you are at tv setting press ok then start pressing the right arrow and let it go to NTSC or Auto.  Auto may work when you are trying to convert some stations from PAL to NTSC other wise leave it in NTSC.  Exit out slowly allowing receiver to save changes. 

 

 

The above is based on my observations and worked for me.  I hope that it will, together with the owners manual help you in programming your receiver.

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