From:	brewer -(MBREWER)	TO:	ALL

Date Posted:	201999-16-11 2:03:00
Message: Body:	Since I've had my receiver it never seems to return to the exact satellite location that it has been programmed for. For example when I installed the receiver G9 was programmed at count 5000. Now A2 is at roughly 5000. I've replaced the arm once already with no improvment so is there a problem with the receiver memory? Anybody else have this problem? It gets tiring to jog the dish each time to get a signal.

From:	trackerlee -(LEETRACKER02)	TO:	brewer

Date Posted:	201999-16-11 2:32:00
Message: Body:	Check "Options,6,4,2 and make sure the correct Linear is set (highlighted).

From:	B_MOBLEY -(B_MOBLEY)	TO:	trackerlee

Date Posted:	201999-16-11 5:19:00
Message: Body:	I've got the same problem. The 4DTV remembers the correct setting for each satellite, yet all of the satellites appear to be "migrating" to the East (according to the 4DTV). The actuator linear setting (Options,6,4,2) is correct. This is a fairly recent problem. It had previously worked fine for several months. I've checked and double-checked the wiring, checked for loose hardware on the disk, excesive play, etc. Nothing comes up. What else could be doing this?

Date Posted:

201999-16-11 5:19:00

Message:
Body:

I've got the same problem. The 4DTV remembers the correct setting for each satellite, yet all of the satellites appear to be "migrating" to the East (according to the 4DTV). The actuator linear setting (Options,6,4,2) is correct. This is a fairly recent problem. It had previously worked fine for several months. I've checked and double-checked the wiring, checked for loose hardware on the disk, excesive play, etc. Nothing comes up.

What else could be doing this?

From:	cornmuse - GI -(CORNMUSE)	TO:	B_MOBLEY

Date Posted:	201999-16-11 12:41:00
Message: Body:	The 4DTV is unique in that it wants to count each pulse coming from the actuator arm twice. There are a couple of issues you need to check. First, if you can get another 4DTV receiver - or place your reciever in another known system of good quality that will determine if the reciever is at fault. If the reciever works well in another system, then your system is at fault. If it is determined the problem is system specific then you need to determine the pulses per inch of travel for your arm. Arms come in 24 count, 48 count and 64 count. 64 count will cause the problem you describe, the pulses come too fast and the 4DTV will drift (64 count = 128 count on a 4DTV). What kind of arm is on the system? If the arm is compatible then you need to look at: a)grounding the actuator arm to the chasis of the 4DTV using the spare drain wire on the ribbon cable, a screw on the motor housing, and the grounding post on the 4DTV b)shimming the magnetic wheel so it rides just a little farther out from the reed sensor switch (the 4DTV will not work well with a Hall effect switch - must be reed sensor) c)adding a small amount of capacitance to the motor drive leads by tying a small value mica cap across the leads Anyone else care to comment? GI Joe

Date Posted:

201999-16-11 12:41:00

Message:
Body:

The 4DTV is unique in that it wants to count each pulse coming from the actuator arm twice. There are a couple of issues you need to check. First, if you can get another 4DTV receiver - or place your reciever in another known system of good quality that will determine if the reciever is at fault. If the reciever works well in another system, then your system is at fault.

If it is determined the problem is system specific then you need to determine the pulses per inch of travel for your arm. Arms come in 24 count, 48 count and 64 count. 64 count will cause the problem you describe, the pulses come too fast and the 4DTV will drift (64 count = 128 count on a 4DTV). What kind of arm is on the system?

If the arm is compatible then you need to look at:

a)grounding the actuator arm to the chasis of the 4DTV using the spare drain wire on the ribbon cable, a screw on the motor housing, and the grounding post on the 4DTV

b)shimming the magnetic wheel so it rides just a little farther out from the reed sensor switch (the 4DTV will not work well with a Hall effect switch - must be reed sensor)

c)adding a small amount of capacitance to the motor drive leads by tying a small value mica cap across the leads

Anyone else care to comment?

GI Joe