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Masibus Time Distribution Rack TDR-4 User manual

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     
Operation Manual
TIME DISTRIBUTION RACK -
4
        

Masibus Automation And Instrumentation Pvt. Ltd.
B/30, GIDC Electronics Estate,
Sector-25, Gandhinagar-382044, Gujarat, India
+91 79 23287275-79
+91 79 23287281-82
Email: support@masibus.com
Web: www.masibus.com
Time Distribution Rack - 4




Operator’s Manual
  
Contents
(1)INTRODUCTION/OVERVIEW 02
!"#$%
!#&''()("#(%
(2) SAFETY / WARNING
PRECAUTIONS 03
!*#+#(%
!,%(% #(%
(3) FRONT AND REAR PANEL
PICTURE 04
!-%#%
!%
!%#(% #(
(4) USER CONFIGURATION 06
!*)(#$*#(%
!#+%"#.%(#(%
!%*)(#$(% / (
(5) COMMUNICATION DETAILS 09
!$**( %
!$010*( %
!23*( %
!**4&#"#
!&#"#
!!5#-#
(6) SPECIFICATION 15
!.%-#
!%('(*"((#(%
!!)*""+.
!!*23/.
!!23#(%.
!!**4.
!!010.
!!.
Figures & Tables
 
Figure1: -%#% 04
Figure2:35% 04
Figure3: %"#% 05
Figure4: %#(% #( 05
Figure5: *)(#$*#(% 06
Figure6: 23#*( % 10
Figure7:#)5(# 13
Figure8: 6 13
Figure9:(-# 14
Figure10: 35( 
*23/.
16
Figure11: 35( 23
#(%.
17
Figure12: 35( *
*4.
18
Figure13: 35( 010
.
19
Figure14: 35( . 19
Table 1:*)(#$*#(% 07
Table 2:23.*7% 10
Table 3:08
.*#(%
11
Table 4:2*-# 11
Table 5:-# 12

Time Distribution Rack - 4




Operator’s Manual
  
Note:
Information in this manual is
subject to change without prior
notice or permission
.
Warning Symbol
$ +9  ##%#(% # #$
"#(% ""#(#$(5
)$($ ( %# #+ " 
$ #   # (% "%
(%:+    #  ##(% 
"##$"#%+#!
%# " 9+%  )%(%  +9
%#( #$ (%(# %(#(%  +
%#%#!
Class-2 Type of
Instrument
Note: Class-2 – Instrument is
using Line & Neutral for
Power Supply Input.
1. INTRODUCTION
1.1. Purpose of The Manual:
How to read this manual???
Installer: .$"#!
System Designer and New User:
8.$"#
Expert User: .$"#!
Regarding This User’s Manual
→ $( % $ 9 "'( #
#$ % ! ;" % <# "+ 
"(#$%(%"!
→  #$( % + # (% 
#$ $%#%(% "#(% #$(
"#9##(% "#(%!
→ $( % (9 #$
%#(%  #$( "#! (9
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""!
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"((%!
1.2. Product Over View /
Description:
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5 %# "5 ! # $ %(%
#"#  # % % ""+
#!
→ $  (< (%# #+" 
#"#  * 23 / *
 010  % 23
&=/8&! 8%+ ( %  %
(+ 9 (%# (%# %+ ( %
 # <(%  ) *""+
*#!
→   7(  #$% 
( %#"#%+( %$
# (%# #)   "#
( % #"#  (% ( % 
#"#$7(%#!
→  $  ((#+ #
(%# %%# 2* .5
"# (%  %+ ( 
)(#$#$(#2*.5!
Time Distribution Rack - 4




Operator’s Manual
  
2. SAFETY / WARNING
PRECAUTIONS
2.1. Safety Precautions
Dangerous voltages capable of
causing death are sometimes
present in this instrument. Before
installation or beginning of any
troubleshooting procedures the
power to all equipment must be
switched off and isolated. Units
suspected of being faulty must be
disconnected and removed first and
brought to a properly equipped
workshop for testing and repair.
Component replacement and
interval adjustments must be made
by a company person only.
2.2. Warning Precautions
→ 3 )((%  '(+ #$ 9 
#%9%"#(%!
→ ,((%  # 9 ( # 9+
"%% )$ $' 9( #(
5%) %"#(<"(%!
→ # ( % #$# ") 
#$ %(# # 9 "## 9+ 
((# 95  <#% ' %#
###$(%('"(9!
→ 8 )((%  # 9 %( #
"""(# #%   "#(
%   %  #(%! ,((%
# 9 (#9  '#  %#
%#"##(% #$+#!
→ 3) %# # '#( $#% #$
#(%)!
→ 1(+ #$# #$ #(%   #$ #"#
'( % #$ (%"#  "(( (%
.$"#%#<!
→ ="%("##$$("%#'
#$%(##$#%%(%"##$
%(#$(""(%  !%+
##%(#"#%()(#$#$
(! ,(# )% #$  %9
% ( %9  # %
)$%"%(% )(#$Customer
Support Division.
→  %#  #$( (%#%# (% 
$  <(' $5 '(9#(% (#
(# ('   (%! $
9(%##"##$$
%# < #$ <( #(% 
"((!
→ '( ")   (% "$
(%#%#")""+!#$(#
 %( (% #$ ") (% (%# %
(%#(%  #% (%# #$ "(+
(  #$ (% %   (% (# %
#$%+(!8%#
 (%# %(  %# " #$ "(+
% %+ ") 9  #
$#$!
Time Distribution Rack - 4




Operator’s Manual
  
3.0 FRONT AND REAR PANEL PICTURE
3.1 FRONT PANEL
Figure 1: Front Panel of TDR-4
($(%"#@@=
5%#"5 !
-(   $) #$ %# "%  #$
( (#(9#(% 5! $ 
(%# (< #+"  #"# 
'(9 )$($  * 23 /
23 &=/8& 010  %
**4!
$ (  %   #$ ")
""+  #$ !  % #5
")  #$ (% > 1 8.? 9+
8(#%%%#)(#$(#
% &%& )(#$! %#%# ( 
((## )(#$ #$ "'((%  (#
1.""+%%9+#!
0$$%/0)$($$)#$
") ##  #$  % 
%9  (# #"# )(#$ (#
##/0)$($$)#$###$
( %!
  7(  #$%  %9
 #"# #$%  $ # (%#
%#$   #+"  #$  (% %+
#  #$  #$  $
<( #"#%( %(
#$%(%#+"!
3.2 REAR PANEL
85V TO 265V AC
120V TO 370VDC
A–> L/+
B–> E
C–>N/-
Figure 2: Back Panel of TDR – 4
Time Distribution Rack - 4




Operator’s Manual
  
 %A       %A
Figure 3: Input Panels of TDR-4
$(%#(%"#%%###$
95"%#$!35"%$
 (%# :"  #$ #"#
#(%!
$  #) (%"# "% '(9 
! $ (%"#  * 23 /
23 # % * % 
&,0 2*/&* ,8.6&2 % #)
010 %## '(9  (%"#
)$($#$#"##$2*.5!
$(%"#"%)$($(%##$
% ( #$ # "% % (%"#
%%# # (#  (#+ ('% # #$
(%#  (%# (% #$  (%
%+%2*.5(%%#!
 $ ((#+ # %%# %%#
2* .5 )(#$ !  #
%  #$ ) 2* % #5  #$
( %  #$# 2*  (%"# % ('
#$# ( % # #$ (%#  
#$ (#(9#(%  #$ ( %! $
#(%#$2*(9%(%#
(%"# ('%9+#$2*!
3.3 MOUNTING DETAIL
masibus
Figure 4: Mounting Detail of TDR-4
4.0 USER CONFIGURATION
Time Distribution Rack - 4




Operator’s Manual
  
4.1 SWITCH SELECTION
Figure 5: Switch Selection
-( $)#$+##$*)(#$'(9##$95"##$!$
%( #(%$:"($)%9)!
% *)(#$

=
3&6
.68/0
*,
*,(###$#$!
*,B&--%*,B&)(#$#%%#!
*,B&%*,B&--)(#$%%#!
CD
C
C D C (  #  *  -. #"#! $( #"# (
'(9%010$#(%#010##$(
#"#!
*$#"(%%*-.!
*$#"(%%%0'%##"#!
.$%%
*,D
*,E
*,D*,E##(%'#%%(%'# (#$
&,0(%"#!
*,B & % *,B &--  (%'#  (  &,0  (%"#
%*,EB&--!
*,B &-- % *,B &  %% (%'#  (  &,0 
(%"#%*,EB&!
*,D
*,E
*, D *,E    (%'#  %% (%'#  (  #$
,8.6&2(%"#!
*,B & % *,B &--  (%'#  (  ,8.6&2 
(%"#%*,EB&--!
*,B&--%*,B&%%(%'# (,8.6&2
(%"#%*,EB&!
*,D
*,4
*,D*,4(%'#%%(%'# (#$2*
/&*(%"#!
*,B&%*,B&--(%'# (2*/&*(%"#
%*,4B&--!
*,B&--%*,B&%%(%'# (2*/&*
(%"#%*,4B&!
.$%% *,D
*,4
*,D*,4##(%'#%%(%'# (#$
&,0(%"#!
Time Distribution Rack - 4




Operator’s Manual
  E
*,B & % *,B &--  (%'#  (  &,0  (%"#
%*,4B&--!
*,B &-- % *,B &  %% (%'#  (  &,0 
(%"#%*,4B&!
*,D
*,
*, D *,    (%'#  %% (%'#  (  #$
,8.6&2(%"#!
*,B & % *,B &--  (%'#  (  ,8.6&2 
(%"#%*,B&--!
*,B&--%*,B&%%(%'# (,8.6&2
(%"#%*,B&!
*,D
*,
*,D*,(%'#%%(%'# (#$2*
/&*(%"#!
*,B&%*,B&--(%'# (2*/&*(%"#
%*,B&--!
*,B&--%*,B&%%(%'# (2*/&*
(%"#%*,B&!
Table 1: Switch Selection
4.2 Default Relay Input Condition
$#))+%( (% +%"##(%#95#(!!%%
(%'#(% %(%'#(% !$+(%"##(%%%%
&,02*/&*,8.6&2%&,02*/&*,8.6&2
"#('+!
%%%(%'#(% (#$#(% #$#9++%###$
(%(##%(#(%!-<"(2*5##$2*%%#(%%#('#
(#2*/&*#"#+%#$#$2*/&*#(% #%%##$
(%%%(%'#(% )( )/02*/&*(%%#)*""+!
$#+%(#(%2*5%%(%'#(% (<"#
9)
Relay
Condition NO/NC
) &>)&? .>)&--?
,#$
&>,#$
##
8'(9?
.>,#$ #
8'(9?
2*/# &>2*( %
6#$+? .>2*( %/#?
-(%'#(% "#(%+(%"##$()(#$##(% $)%(%
9!%(%'#(% #$+(%"##(%"%#/0(%(#(%!
-<"(2*5##$)##$(%(#(%#$&,0#(%
$9"%#(%(##/0#%#)*""+!
$#+%(#(%2*5(%'#(% (<"#
9)
Relay Condition NO/NC
Time Distribution Rack - 4




Operator’s Manual
  4
) &>)&--? .>)&?
,#$
&>,#$
#8'(9?
.>,#$ #
#8'(9?
2*/# &>2*( %
/#?
.>2*( %
6#$+?
Note:$+2*5)#9+1.+%"#
(%!$<#%('#9#5%)$(%%#(% +(%"#
#(%#%+2*5!
4.3 Panel Switching Logic
83.
0-
#9'"*F>83?@G0-.@
*F %(##"#
*F %(##"#
HF%@#
,$I,$%+("%(#(%( (!
8)&%A  )&%A
3,#$ A 0,#$ A
.2*/#A  -2*/#A
-0<"(%$(%"#83%.# (%"#('+%%%
$(%"#0%-# (%#$7#(%*F>83?@G0-.@)(#(%
%#$#$%"##%)(9)##"#!
       
 H H H H H H  
 H H H H H H  
 H H H H H H  
 H H H H H H  
 H H H H H H  
 H H H H H H  
        
        
Time Distribution Rack - 4




Operator’s Manual
  
5.0 COMMUNICATION DETAIL
5.1 The 1PPS Signal
$(('+("#%##((% ( %!#
( #$ / ' " )(#$  )(#$ 
 (# #"# (%   #$
2* ('! $( * ( %%# #
#$3.%%#%#$"%!
5.2 The Event Signal
$ ( % ( % (# '%# #"#
#$ $  ##( + %##! $(
( % ( %%# # #)  #$
#(%#$4)+9(#("%#$
 "%  #$ %#%#! $ '%#
( ( %  (# '%#J #$
7%+  #$( '%# % 9
%(   2* ('  
(%#$!$")(#$#$
'%#(%!
 $ ((#+  #5(%   0'%#
(%"#! $  #) 0'%# (%"#
#(% #    %
010 % 010  %
% ((+  010 %
010%!
5.3 The IRIG-B Signal
$ 23 # (  ( #
9 %     " %
)$($ ( .(%# )(#$ #$
+%$%(K * #( #"# "!
$  #) #%#('  
#"#   ' $(# #"# % 
# #"#! $ #(%
7%+(;6K!
- $   #"# #$  #$
#"#
!8%5
9!8 (
!8 (
- 23 $ %  #$  (
  %  )$($ (  +  #$
# #! $  
"(9 "#(  #$ $
%#   #$  ! $ 
7% ( $)% (% 9  % #$
)' $)% (% -(  ! $ +
%9 ## #  % #$ (# 
C%+!
$ #"# '#   #$ #
)' (  1"5 # "5 (%#  
$ ! $  ' #"# ( /
#% % #$ ((%     #$
" ( L&% (L!  56K #
23( %(%%##3.%#$
 "%  #$ '(! 23 /
' ( % ( %%# #  3.
%%# % #$  "%  #$
'(!
Position
Type Item Digit
Position
Type Item Digit
0 Reference Mark 27 to 28 Logical 0
1 Signal Seconds
1 29 Reference Mark
2 Signal Seconds
2 30 Signal Day 1
3 Signal Seconds
4 31 Signal Day 2
4 Signal Seconds
8 32 Signal Day 4
5 Logical 0 33 Signal Day 8
6 Signal Seconds
10 34 Logical 0
7 Signal Seconds
20 35 Signal Day 10
8 Signal Seconds
40 36 Signal Day 20
9 Reference Mark 37 Signal Day 40
10 Signal Minutes 1 38 Signal Day 80
11 Signal Minutes 2 39 Reference Mark
12 Signal Minutes 4 40 Signal Day 100
13 Signal Minutes 8 41 Signal Day 200
14 Logical 0 42 to 48
Logical 0
Time Distribution Rack - 4




Operator’s Manual
  
15 Signal Minutes 10 49 Reference Mark
16 Signal Minutes 20 50 to 58 Logical 0
17 Signal Minutes 40 59 Reference Mark
18 Logical 0 60 to 68
Logical 0
19 Reference Mark 69 Reference Mark
20 Signal Hours 1 70 to 78 Logical 0
21 Signal Hours 2 79 Reference Mark
22 Signal Hours 4 80 to 88 Logical 0
23 Signal Hours 8 89 Reference Mark
24 Logical 0 90 to 98 Logical 0
25 Signal Hours 10 99 Reference Mark
26 Signal Hours 20
Table 2 – IRIG B Code Sequence
Figure 6: IRIG B Modulated Signal
5.4 RS-232/RS-485 Outputs
$  #) * ( "#
7("" )(#$(% #$ '(! $ #)
( "#  #) "# $( $
"% $(" # # #(
(#(%! 0$ ( ( % $ (# )%
##$#((% #(% <"
08>M2.?#(2*
#('(9!
- #$ #(  
(# &#"#  %# )$($
 )(#$ #9 (#$ *
#"#*4#"#!
Time Distribution Rack - 4




Operator’s Manual
  
#*&#"#5
*,<*,<*,<*)(#$&D
#$)(#$!
,$<F"#('&"#!
#*4&#"#5
*,<*,<*,<)(#$&D
#$)(#$&--!
,$<F"#('&"#
NMEA Format
RMC RECORD FORMAT
$M2.%#%%#(%#(%
#  "(#(% (< " % 
(%#(%! $ )(%  <"
$) #$ %#%#   #+"( .
%#%
$ ##(%   #$( ( # (
44!
$  #    #$( #
$%(##()
Field Example Comments
Sentence ID
$GPRMC,
UTC Time 130525.00, hhmmss.ss,
Status A, A = Valid/V = Invalid,
Latitude 4250.5589, ddmm.mmmm,
N/S Indicator S, N = North/S = South,
Longitude 14518.5084, dddmm.mmmm,
E/W Indicator E, E = East/W = West,
Speed over ground 000.1, Knots,
Course over ground 245.0, Degrees,
UTC Date 291206, DDMMYY,
Magnetic variation , Degrees,
Magnetic variation , E = East/W = West,
Checksum *25 *CC
Terminator <CR><LF> Non-printing characters
Table 3: RMC Record Selection
NGTS Format
$ ##(%   #$( # 
" 9!$# 
2*#$%(#"(%#9
$# %  %(%  ./- 
)
Description Number of
Characters
Character
Position
Range of
Value/Information
.%#((#(%   ."(#
N(%.%#+   #
%#$   #
+%#$  E #
+,5  4 #E
6   #
(%#   #
25   
1((#+5   
./-   %"(%#(% 
$#
Table 4: NGTS Format
$#%((%7%$9
#$ . %#((#(% $#
#$ $ # #$ ./- )(#$ #$ #
( %((%#( (#9(% #%(##(#!
Time Distribution Rack - 4




Operator’s Manual
  
$ $9##(+
'(9#%%"(##$5
(%#"$!
T-Format
$ ##(%   #$( # 
" 9!$# 
# $ %(#   "(%#9
$# )(#$  %(%  ./- 
)
Description Number of
Characters
Character
Position
Range of
Value/Information
.%#((#(%   ."(#
('(   
N(%.%#+   #
('(   
%#$  E #
('(  4 
+%#$   #
('(   
+,5   #E
('(   
6   #
('(   
(%#  E4 #
('(   
25   
1((#+5   
./-   %"(%#(% $#
Table 5: T- Format
Pin Connection Information:
1) RS-485 O/P: (%#( 3.%%#( ('%9)!
(%.
  (%H
  (%HG
  (%*G
  (%*
8#$"(%.!
2) RS-232 O/P: (%#(3.%%#( ('%9)!
  (%.
  (%.
  (%H
  (%*
  (%2
8#$(%.!
Time Distribution Rack - 4




Operator’s Manual
  
5.5 NTP Outputs
>#)5#("#?(
%#$+%$%(K#(%
$)5(%% 9
%#)5!$#)"5 (
%("%##(%#$#'(%
O(P9%#$"((#(%
-.>(#+
&0*?
 "5# (%'' #$ #(#"
'(% #=.>=%('(?
#(!
#)5(#()(+#
+%$%(K#$#(%#%#$#
#%%(+'(#
.(%#=%('(>=.?
((%#9+%#(%#%
9#(!
#)5#("#(#%(##'(
C%%#%=+>-.E4?
#9"%%#"%!
-( E$)#$<"
"5##%(##%#(%(% (%#
"#!
Figure 7: Network Time Protocol
5.5.1 NTP Packet format

 
Figure 8: NTP Message Header
Time Distribution Rack - 4




Operator’s Manual
  
89'( $)#$"5#$#!
-)(% (#$("#(%$"#(%5#
• Leap:9(#(%# )%(% %("%(% "%#9(%#
#(%#$#(%##$%#%#$)
0%)%(%
1#(%##$+$%
2#(%##$+$%
3%(#(%>#$5$%'9%+%$%(K?
• Version9(#(%# "%#(% #$'(%%9!
• Mode:9(#(%# "%#(% #$)(#$'(%)4'
• Peer clock stratum:49(#(%# "%#(% #$##)(#$'(%
)
0%"(((%'(
1"(+'>! !7("")(#$2*('?
2%+'>'(?
• Polling interval:49(#( %(%# "%#(% #$<((%#'9#)%
*(' !
• Clock precision:49(#( %(%# "%#(% #$"((%#$+#5!
($'(% 5"((%>(%F!?
• Root Delay:#%#("+##$%5(%$##!
• Root Dispersion:#("(%##$%5(%$##!
• Reference clock id:9(#(%#(+(% #$"#('%5!
GPS29(#(%(% *+#
• Reference clock update time:()$%#$+#5)##
#(%#(#"#!
• Originate timestamp: (##$(%#)$%#$7#"##$
'(%#(#"#!
• Receive timestamp:(##$')$%#$7#('#$(%#
(%#(#"#!
• Transmit timestamp:(##$')$%#$"%##$(%#(%
#(#"#
Time Distribution Rack - 4




Operator’s Manual
  
Figure 9: NTP Time Formats
Important Note:
? 1(%'(%"5#(#+#!
9? #)5 IP, Subnet Mask % Gateway   % 9 $% 
#$ $ #)5*##(%    (%  . ,(%)0/0 .(%#!
%#m03/om/101_Appendix A.
?  %# m05/om/101-3 Appendix C  %( (%  ,(%)
H..(%#!
?  %# m05/om/101-5 Appendix F  %( (%  * (%
!
? %#m03/om/101_Appendix A##)5*##(% 
!
6.0 SPECIFICATION
6.1 COMMON FEATURES
$ (9 2* ( % (#(9#
"((D(#(9#(%##"#
%%##(#(!
• $ 7("%# ( $ (% 
"# @@ = 5 %#
"5 
• 6( $ (%#%(#+ /0  # %
#$ %#  # $) #$
7("%###
• 8 .% /0  ") ""+
&(%(#(%
• 8 .% /0  8/8
##(%  * ( % %
(%#%#
• 8 #$ (%"#  % #$  (
%  #$ #"# ( % 
# % #$ %#  #$
7("%#!
• 6#*)""9!
• .%"#(%,O<P!
• $ 7("%# #5 ") 
#$ (% > 1 8.? 9+ 8(
#%%%#)(#$(#
% &%& )(#$! %#%# (
((##)(#$#$"'((%
(# 1 . ""+ % %
9+#!
6.2 INDIVIDUAL SPECIFICATION
6.2.1 POWER SUPPLY CARD
Time Distribution Rack - 4




Operator’s Manual
  
• %"# *""+ %  4   18.
>)(% ?E1.
• -7%+E6K
• %$ %# Q48 "5 R
18. Q 8 "5 R 18.
##RS.
• %"# %# !8 <! >*? R
18.
• 0((%+ET#+"(#
• *#+ % 5  %#
Q!8R6KJ18.(%"#
• <("),%'#(%J
4, )(#$ .-  (
8:#%# %   GT
(%(
• 6" #(  R , 
18.%(%(%
• &' "##(% *$# ((#
"##(%%#"#!
• ."(%-...3.*
.30.
3104E4.3
• #(%18.3#)%)
%%"#(%418.""+
% !
6.2.2 1PPS / IRIG B TTL Card
• 1 / (%"# ' % 3. U
%%#!
• %91/(##"#
'%3.U%%#!
•  % /0 # $) #$ ##
$#"#!
• $(%"#"((#(9#)(#$#
%+$% (%"(#+#(%!
• <((#%#
• Isolation of 1.5KV AC between Power to
Output, Input to Output and Output to Output.
1PPS/IRIG-B TTL CARD
1 PPS / IRIG B
TTL Input Buffer and
Distribution Circuit Isolator Circuit
Isolator Circuit
Isolator Circuit
Isolator Circuit
1 PPS1/
IRIGB
TTL 1
1 PPS2/
IRIGB
TTL 2
1 PPS3/
IRIGB
TTL 3
1 PPS4/
IRIGB
TTL 4
Figure 10: Block Diagram of 1PPS / IRIG B TTL Card
-( ! $) #$ 95 (   #$ *23 / ! $ (%"#  #$  (
99+#$9%#$%(##"#"'(!
6.2.3 IRIG B MODULATION CARD
• ( . 8"(( % (#(9#
"'( %  2 3  %+ #$
# (  "((#(% %
(#(9#(%! $ #(  
9 %   56K "(#
#>?(%)'(!
• % (%"# #$ 7("%# (' %
%  ( %  % <#% 2
3!
• ,$% ##(%  % (%"# ( % #$
Time Distribution Rack - 4




Operator’s Manual
  E
/0*28/#%&!$"((
( %((#%(#(9#'
#$#"##$7("%#!
• 0$  #$  (# #"#
9:#!$##(% 
#$ (%$#"#"((!
• $ (%$"(((:#
9+  (# "#%#(#
(9%#!
• $ #"# ' ( (%"%%#+
##$#+"#"#!
•
The analog time code signal
connector is a base female BNC.
The input circuit impedance is more
than 600 Ω.
• ;6K8*( %
• #(%#(
• &#"#"%(#$%
EV
• #(%!;18.9#)%)
#&#"#%"##&#"#%
&#"##&#"#!
IRIG B Modulation Card
IRIGB Modulated
Input Amplifier Circuit Isolator Circuit
Isolator Circuit
Isolator Circuit
Isolator Circuit
Amplifier Circuit
Amplifier Circuit
Amplifier Circuit
Amplifier Circuit
IRIGB
Modulati
on 1
IRIGB
Modulati
on 2
IRIGB
Modulati
on 3
IRIGB
Modulati
on 4
Gain
Control 1
Gain
Control 2
Gain
Control 3
Gain
Control 4
Figure 11: Block Diagram of IRIG B Modulation Card
-( !$)#$95( #$23#(%.!%"##$((#
"(( 9+ #$ "(( ((# #$% (# ( ('( (% #  (# #"# )(#$ (%
%#((#!
6.2.4 RS-232/RS-485 CARD
• $ (  (#(9# )
8*.  (#(9#(% %  (
#5 (% "(% )(#$ *
#%!
• 8 %# ( &% /0 $) #$#
")""+(&!
• $#"##()(#$#$
 $#(#(  #$ '(9
(%"##!
• % " "(#+  %9 
#9(#%@#9$% !
• (%"##(##"#!
• *  *4 &#"# 
)(#$#9!
• $ (%"# D &#"# %%# 
*=3W"(%#+"!
• #(%!;18.9#)%)
#&#"#%"##&#"#%
&#"##&#"#!
• 3-.%%#!
Time Distribution Rack - 4




Operator’s Manual
  4
RS-232/RS-485 Card
Figure 12: Block Diagram of RS 232/Rs-485 Card
-( ! $) #$ 95 (   #$ **4 .! %"#  #$  ( (#
%'#(%/'#$%(#(('((%#(##"#%#$%(#(%'#
(%#**4##"#!
6.2.5 EVENT CARD
• (%"##"#!
• -"#%#(+#"#
'(9%#$%#(#$
!
• /0'(9)$($$)#$
##$'%#!
• &%")/0$)###$
")#$!
• %'#'%# (#"#!>
:"##(% ?
• 18.8<(
• #(%V#1.
9#)%)#&#"#%"##
&#"#%&#"##&#"#
EVENT Card
EVENT Input
Selection Circuit
for Inverted or
Noninverted
EVENT
Isolator Relay
Output
Isolator Relay
Output
Isolator Relay
Output
Isolator Relay
Output
EVENT 1
EVENT 2
EVENT 3
EVENT 4
Figure 13: Block Diagram of EVENT Card
Time Distribution Rack - 4




Operator’s Manual
  
-( !$)#$95( #$010.!%"##$((# ('%#
#(%%(%'#((##$%#"##$(95(('((%#(#
#"#!
6.2.6 NTP CARD
NMEA Input with
1pps Isolator Circuit
Isolator Circuit
Isolator Circuit
Isolator Circuit
NMEA to NTP
conversion
NMEA to NTP
conversion
NMEA to NTP
conversion
NMEA to NTP
conversion
NTP1
NTP2
NTP3
NTP4
Figure 14: Block Diagram of NTP Card
-( !$)#$95( #$.!%"##$((# ('%#
(#%#$%9((##$%08(%'#(%##"##$(95(
('((%#(##"#!
/