User's Manual
PINEAPPLE TECHNOLOGY, INC.
DTC25U Operating and Service Manual
TABLE OF CONTENTS
Section l --- SAFETY NOTICES ………………………………………………………………………
…
2
** READ THIS SECTION BEFORE INSTALLATON *
*
Secton ll --- TRANSCODER SPECIFICATIONS …………………...………………………………
…
3
Section lll --- TRANSCODER INSTALLATION ………………………………………………………
4
Section lV --- TRANSCODER TURN-ON ……………………………………………………………
…
5
Section V --- THEORY OF OPERATION
A
. Introduction ……………………………………………………………………………
…
8
B. XC100LC Regenerative Transcoder Module and Up Converter……………………
…
8
C. LTX Mainframe Assembly ……………………………………………………………… 9
D. BPUD100 Digital Mask Filter……………………………………………………………
…
9
E. Low Pass Filter (Optional)………………………………………………………………
…
9
SECTION Vl --- SCHEMATIC AND PARTS LISTS
A
. DTC25U………………………………………………………….................................... 10
B. LTX Mainframe Assembly………………………………………………………………
…
12
C. BPUD100Digital Mask Filter……………………………………………………………
…
14
D. Low Pass Filter…………………………………………………………………………… 15
SECTION Vll --- RECOMMENDED ROUTINE MAINTENANCE …………………………………
…
16
SECTION Vlll --- ADJUSTMENTS AND TUNING ……………………………………………………
17
SECTION lX --- PROBLEM SOLVING / TROUBLESHOOTING …………………………………
…
18
SECTION X --- WARRANT
Y
……………………………………………………………………………
20