TABLE OF CONTENTS
E.
WORD
LENGTH ........................................................................................ 3-46
F.
PREAMBLE ................................................................................................ 3-47
G.
POSTAMBLE.............................................................................................. 3-47
H.
QUALITY
INDICATOR............................................................................. 3-48
I.
DATA
FORMAT......................................................................................... 3-48
J.
LOSS
AND
ERROR DATA........................................................................ 3-49
3.12.7
OPERATION ..................................................................................................... 3-49
3.12.8 TIME WORD OUTPUT FORMATS (RS-232 TALKER................................. 3-49
CHAPTER FOUR
THEORY OF OPERATION
4.0
LOGIC DESCRIPTION AND USE ................................................................................ 4-1
4.1
GENERAL ....................................................................................................................... 4-1
4.2
DETAILED LOGIC DESCRIPTION.............................................................................. 4-5
4.3
[5] STCG (I/O AND DAC).............................................................................................. 4-7
4.4
[4] STCG (PROP DELAY) ............................................................................................. 4-7
4.5
[6] STCG (GENERATOR CODE) .................................................................................. 4-7
4.6
[2] STCG (GENERATOR
μ
P.......................................................................................... 4-8
4.7
[3] STCG (GENERATOR VIAs ..................................................................................... 4-9
4.8
[7] TRANSLATOR AGC)............................................................................................. 4-11
4.9
[8] STCG (TRANSLATOR
μ
P) .................................................................................... 4-12
4.10 [9] TRANSLATOR FILTS) .......................................................................................... 4-14
4.11 [10] RS-232 TALKER .................................................................................................. 4-14
4.12
[12] RS-232 I/O ............................................................................................................. 4-14
4.13 [13] MULTI-ENCODER ............................................................................................... 4-15
4.14 [14] MULTI-ENCODER (PLL) .................................................................................... 4-15
4.15 DISTRIBUTION BOARD (100008) ............................................................................. 4-15
4.16 DISPLAY ASSEMBLY (100009)................................................................................. 4-15
CHAPTER FIVE
OPERATION MAINTENANCE AND ADJUSTMENTS
5.0
INTRODUCTION ........................................................................................................... 5-1
5.1
TOOLS AND TEST EQUIPMENT REQUIRED ........................................................... 5-1
5.2
PREVENTATIVE MAINTENANCE ............................................................................. 5-2
5.3 TROUBLE
SHOOTING.................................................................................................. 5-3
5.3.1 POWER-UP SELF TEST .................................................................................... 5-3
5.3.2 GENERATOR (part of STCG) ............................................................................ 5-4
5.3.3 TRANSLATOR (part of STCG).......................................................................... 5-4
5.3.4 SYSTEM TROUBLES ........................................................................................ 5-5
5.3.5 MANUAL SYSTEM RESET .............................................................................. 5-7
5.4
REPLACING AN OPTION MODULE........................................................................... 5-7
Symmetricom, Inc.
TM7000 TymMachine TCG/T (Rev D)
v
