@Z_BOXTEXT = LI

@Z_BOXTEXT = VN

@Z_BOXTEXT = Mode

@Z_BOXTEXT = Precision

@Z_BOXTEXT = Root Delay (32)

@Z_BOXTEXT = Poll Interval

@Z_BOXTEXT = Root Dispersion (32)

@Z_BOXTEXT = Transmit Timestamp (64)

@Z_BOXTEXT = Reference Timestamp (64)

@Z_BOXTEXT = Originate Timestamp (64)

@Z_BOXTEXT = Receive Timestamp (64)

@Z_BOXTEXT = Stratum

@Z_BOXTEXT = Reference Identifier (32)

@Z_BOXTEXT = 0

@Z_BOXTEXT = 31

@Z_BOXTEXT = 8

@Z_BOXTEXT = 16

@Z_BOXTEXT = 24

@Z_BOXTEXT = Authenticator (optional) (96)



@Z_CAPTION = 

@Z_BOXTEXT = 00

@Z_BOXTEXT = VN

@Z_BOXTEXT = 6

@Z_BOXTEXT = Sequence 

@Z_BOXTEXT = Status

@Z_BOXTEXT = Op

@Z_BOXTEXT = Data (468 octets max)<R>


@Z_BOXTEXT = REM

@Z_BOXTEXT = Authenticator (optional) (96)

@Z_BOXTEXT = Association ID

@Z_BOXTEXT = 0

@Z_BOXTEXT = 31

@Z_BOXTEXT = 8

@Z_BOXTEXT = 16

@Z_BOXTEXT = 24

@Z_BOXTEXT = Offset

@Z_BOXTEXT = Count

@Z_BOXTEXT = Padding (zeros)



@Z_CAPTION = 

@Z_BOXTEXT = LI

@Z_BOXTEXT = Peer Status

@Z_BOXTEXT = Clock Status

@Z_BOXTEXT = Error Code

@Z_BOXTEXT = Count

@Z_BOXTEXT = Count

@Z_BOXTEXT = Reserved

@Z_BOXTEXT = System Status Word

@Z_BOXTEXT = Peer Status Word

@Z_BOXTEXT = Radio Status Word

@Z_BOXTEXT = Error Status Word

@Z_BOXTEXT = Code

@Z_BOXTEXT = Code

@Z_BOXTEXT = Code

@Z_BOXTEXT = Clock Source 

@Z_BOXTEXT = Sel

@Z_BOXTEXT = 0

@Z_BOXTEXT = 6

@Z_BOXTEXT = 8

@Z_BOXTEXT = 12

@Z_BOXTEXT = 15

@Z_BOXTEXT = 0

@Z_BOXTEXT = 2

@Z_BOXTEXT = 8

@Z_BOXTEXT = 12

@Z_BOXTEXT = 15

@Z_BOXTEXT = 0

@Z_BOXTEXT = 8

@Z_BOXTEXT = 15

@Z_BOXTEXT = 0

@Z_BOXTEXT = 8

@Z_BOXTEXT = 15



@Z_CAPTION = 

@Z_BOXTEXT = Crypto-Checksum (64)

@Z_BOXTEXT = 0

@Z_BOXTEXT = 31

@Z_BOXTEXT = 8

@Z_BOXTEXT = 16

@Z_BOXTEXT = 24

@Z_BOXTEXT = Key Identifier (32)



@Z_CAPTION = 

@Z_TBL_BEG = COLUMNS(3), DIMENSION(IN), COLWIDTHS(E3,E3,E2), WIDTH(5.5000), 
HGUTTER(.1670), BOX(Z_SINGLE), KEEP(OFF), ALIGN(CT), RULE(First Head,R1C0..R1C3)

@Z_TBL_BODY = TABLE HEADER, TABLE HEADER, TABLE HEADER

Oscillator type, Stability (per day), Drift /Aging (per day)

@Z_TBL_BODY = TABLE TEXT, TABLE TEXT, TABLE TEXT

Hydrogen maser, 2 x 10<M^>-14<D>, 1 x 10<M^>-12<D>/yr

Cesium beam,  3 x 10<M^>-13<D>, 3 x 10<M^>-12<D>/yr

Rubidium gas cell, 5 x 10<M^>-12<D>, 3 x 10<M^>-11<D>/mo

Oven-controlled crystal, 1 x 10<M^>-9<D> 0-50 deg C, 1 x 10<M^>-10<D>

Digital-comp crystal, 5 x 10<M^>-8<D>  0-60 deg C, 1 x 10<M^>-9<D>

Temp-compensated crystal, 5 x 10<M^>-7<D> 0-60 deg C, 3 x 10<M^>-9<D>

@Z_TBL_BODY = TABLE HEADER, TABLE HEADER, TABLE HEADER

Uncompensated crystal, ~1 x 10<M^>-6<D> per deg C, don't ask

@Z_TBL_END = 



@Z_CAPTION = 

@Z_TBL_BEG = COLUMNS(4), DIMENSION(IN), COLWIDTHS(E4,E4,E4,E4), WIDTH(5.0000), 
HGUTTER(.1670), BOX(Z_SINGLE), KEEP(OFF), ALIGN(CT), RULE(Z_SEC1,R1C0..R1C4)

@Z_TBL_BODY = TABLE CENTER, TABLE CENTER, TABLE HEADER, TABLE CENTER

UTC Date, MJD, NTP Time, Offset

@Z_TBL_BODY = TABLE CENTER, TABLE CENTER, TABLE TEXT, TABLE CENTER

01 Jan 72, 41,318, 2,272,060,800, 0

31 Jun 72, 41,500, 2,287,872,000, 1

31 Dec 72, 41,683, 2,303,683,200, 2

31 Dec 73, 42,048, 2,335,219,200, 3

31 Dec 74, 42,413, 2,366,755,200, 4

31 Dec 75, 42,778, 2,398,291,200, 5

31 Dec 76, 43,144, 2,429,913,600, 6

31 Dec 77, 43,509, 2,461,449,600, 7

31 Dec 78, 43,874, 2,492,985,600, 8

31 Dec 79, 44,239, 2,524,521,600, 9

31 Jun 81, 44,787, 2,571,868,800, 10

31 Jun 82, 45,152, 2,603,404,800, 11

31 Jun 83, 45,517, 2,634,940,800, 12

31 Jun 85, 46,248, 2,698,099,200, 13

31 Dec 87, 47,161, 2,776,982,400, 14

31 Dec 89, 47,892, 2,840,140,800, 15

@Z_TBL_BODY = TABLE CENTER, TABLE CENTER, TABLE HEADER, TABLE CENTER

31 Dec 90, 48,257, 2,871,590,400, 16

@Z_TBL_END = 



@Z_CAPTION = 

@Z_BOXTEXT = UTC

@Z_BOXTEXT = NTP

@Z_BOXTEXT = seconds

@Z_BOXTEXT = hours

@Z_BOXTEXT = kiloseconds

@Z_BOXTEXT = seconds

@Z_BOXTEXT = ,799 +

@Z_BOXTEXT = ,801

@Z_BOXTEXT = ,800

@Z_BOXTEXT = ,800 +

@Z_BOXTEXT = 2,840,140

@Z_BOXTEXT = 2,840,140

@Z_BOXTEXT = 2,840,140

@Z_BOXTEXT = 2,840,140

@Z_BOXTEXT = :59

@Z_BOXTEXT = :01

@Z_BOXTEXT = :00

@Z_BOXTEXT = :60

@Z_BOXTEXT = 23:59

@Z_BOXTEXT = 00:00

@Z_BOXTEXT = 00:00

@Z_BOXTEXT = 23:59

@Z_BOXTEXT = 31 Dec 89

@Z_BOXTEXT = 1 Jan 90

@Z_BOXTEXT = (leap)



@Z_CAPTION = 

@Z_TBL_BEG = COLUMNS(2), DIMENSION(IN), COLWIDTHS(E1,E5), WIDTH(5.6700), 
HGUTTER(.1670), BOX(Z_SINGLE), KEEP(OFF), ALIGN(CT), L1(R1C0..R1C2)

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER

Variable, Description

@Z_TBL_BODY = TABLE CENTER, TABLE TEXT

<$EX sub i (t)>, estimated time offset of clock <MI>i<D> at time <MI>t<D>

<$EY sub i (t)>, estimated frequency offset of clock <MI>i<D> at time 
<MI>t

<$EX sub {i,j} (t)>, measured time difference between clocks <MI>i<D> 
and <MI>j<D> at time <MI>t<D>

<$Ew sub i ( tau )>, weight factor for clock <MI>i<D> over the interval 
<$Etau>

<$Em sub i>, time constant of exponential filter to estimate frequency 
offset

<$EN sub tau>, time constant of exponential filter to estimate mean 
squared error

<$EK sub i>, constant used to correct estimates due to inclusion of 
all clocks

<$Eepsilon sub i ( tau )>,  error in estimated time offset of clock 
<MI>i<D> over the interval <$Etau>

<$E<< epsilon sub i sup 2 ( tau ) >> sub t>, total mean squared error 
in estimated time offset of clock <MI>i<D> including the interval 
<$Etau> ending at time <MI>t<D>

<$Etau>, time interval between measurements

<$En>, number of clocks in the ensemble

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER

<$Etau sub mini>, value of <$Etau> at minimum <$Esigma sub y sub i 
( tau )> on Allan variance curve for clock <MI>i<D>

@Z_TBL_END = 



@Z_CAPTION = 

@Z_BOXTEXT = Clock Filter

@Z_BOXTEXT = Clock Filter

@Z_BOXTEXT = Clock Filter

@Z_BOXTEXT = Peer Selection

@Z_BOXTEXT = Clock<R>
Combining

@Z_BOXTEXT = Loop Filter

@Z_BOXTEXT = VCO

@Z_BOXTEXT = Network

@Z_BOXTEXT = Phase-Locked Oscillator



@Z_CAPTION = 

@Z_BOXTEXT = VCO 

@Z_BOXTEXT = <$Etheta sub r ~+>

@Z_BOXTEXT = e<MV>i<D>

@Z_BOXTEXT = d<MV>i<D>

@Z_BOXTEXT = Osc

@Z_BOXTEXT = <$Etheta sub o ~->

@Z_BOXTEXT = Clock Filter

@Z_BOXTEXT = Loop Filter

@Z_BOXTEXT = <$EV sub s>

@Z_BOXTEXT = <$EV sub c>

@Z_BOXTEXT = PD

@Z_BOXTEXT = <$EV sub d>



@Z_CAPTION = 

@Z_TBL_BEG = COLUMNS(2), DIMENSION(IN), COLWIDTHS(E1,E2), WIDTH(3.3300), 
HGUTTER(.1670), BOX(Z_SINGLE), KEEP(OFF), ALIGN(CT), L1(R1C0..R1C2)

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER

Variable, Description

@Z_TBL_BODY = TABLE CENTER, TABLE TEXT

<$EV sub d>, phase detector output

<$EV sub s>, clock filter output

<MI><$EV sub c>, loop filter output<D>

<$Etheta sub r>, reference phase

<$Etheta sub o>,  VCO phase

<$Eomega sub c>, PLL crossover frequency

<$Eomega sub z>, PLL corner frequency

<$Etau>, PLL time constant

<$Emu>, update interval

<$Erho>, poll interval

<$Ef>, frequency error

<$Eg>, phase error

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER

<$Eh>, compliance<F128>

@Z_TBL_END = 



@Z_CAPTION = 

@Z_TBL_BEG = COLUMNS(3), DIMENSION(IN), COLWIDTHS(E1,E1,E2), WIDTH(3.6700), 
HGUTTER(.1670), BOX(Z_SINGLE), KEEP(OFF), ALIGN(CT), L1(R1C0..R1C3)

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER, TABLE HEADER

Parameter, Value, Description

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER, TABLE TEXT

<$Esigma>, 4 sec, adjustment interval

<MI>T<D>, 2<M^>9<D> sec, clock-filter delay

<MI>K<MIV>f<D>, 2<M^>22<D>, frequency weight

<MI>K<MIV>g<D>, 2<M^>8<D>, phase weight

<MI>K<MIV>h<D>, 2<M^>13<D>, compliance weight

<MI>K<MIV>s<D>, 2<M^>4<D>, compliance max

<MI>K<MIV>t<D>, 2<M^>14<D>, compliance multiplier

@Z_TBL_BODY = TABLE CENTER, TABLE TEXT, TABLE HEADER

<MI>K<MIV>u<D>, 2<M^>6<D> sec, update interval min

@Z_TBL_END = 



@Z_CAPTION = 

@Z_BOXTEXT = <$Et(i~-~1)>

@Z_BOXTEXT = <$Et(i)>

@Z_BOXTEXT = <$Et(i~+~1)>

@Z_BOXTEXT = <$Emu (i~+~1)>

@Z_BOXTEXT = <$Emu (i)>

@Z_BOXTEXT = time



@Z_CAPTION = 

@Z_TBL_BEG = COLUMNS(2), DIMENSION(IN), COLWIDTHS(E1,E2), WIDTH(3.3300), 
HGUTTER(.1670), BOX(Z_SINGLE), KEEP(OFF), ALIGN(CT), L1(R1C0..R1C2)

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER

Variable, Description

@Z_TBL_BODY = TABLE CENTER, TABLE TEXT

<$Er>, reading error

<$Erho>, max reading error

<MI><$Ef>, <D>frequency error

<$Ephi>, max frequency error

<$Etheta ,~THETA>, clock offset

<$Edelta ,~DELTA>, roundtrip delay

<$Eepsilon ,~EPSILON>, error/dispersion

<$Et>, time

<$Etau>, time interval

<$ET>, NTP timestamp

<$Es>, clock divider increment

@Z_TBL_BODY = TABLE CENTER, TABLE HEADER

<$Ef sub c>, clock oscillator frequency

@Z_TBL_END = 



@Z_CAPTION = 

@Z_BOXTEXT = <$Etheta sub 0>

@Z_BOXTEXT = <$ET sub 1>

@Z_BOXTEXT = <$ET sub 4>

@Z_BOXTEXT = <$ET sub 2>

@Z_BOXTEXT = <$ET sub 3>

@Z_BOXTEXT = A

@Z_BOXTEXT = B

@Z_CAPTION = 

@Z_BOXTEXT = <$E1 / 2 [(T sub 2~-~T sub 1 )~+~(T sub 3~-~T sub 4 )]>

@Z_BOXTEXT = <$E(T sub 4~-~T sub 1 )~-~(T sub 3~-~T sub 2 )>

@Z_BOXTEXT = rootdelay <$EDELTA prime>

@Z_BOXTEXT = <$Erho~+~phi (T sub 4~-~T sub 1 )>

@Z_BOXTEXT = rootdispersion<R>
<$EEPSILON prime~+~rho prime~+~phi prime tau prime>  

@Z_BOXTEXT = Peer Variables<R>
peer.-

@Z_BOXTEXT = System Variables<R>
sys.-

@Z_BOXTEXT = <$ESIGMA>

@Z_BOXTEXT = <$ESIGMA>

@Z_BOXTEXT = Filter<R>


@Z_BOXTEXT = clock offset = <$ETHETA>

@Z_BOXTEXT = <$Etheta sub i>

@Z_BOXTEXT = rootdelay <$EDELTA> = <$Edelta~+~DELTA prime>

@Z_BOXTEXT = <$Edelta sub i>

@Z_BOXTEXT = offset = <$Etheta>

@Z_BOXTEXT = <$Eepsilon~+~phi tau sub i>

@Z_BOXTEXT = delay = <$Edelta>

@Z_BOXTEXT = Packet Variables<R>
pkt.-

@Z_BOXTEXT = dispersion =<R>
<$Eepsilon~+~phi tau~+~epsilon sub sigma>

@Z_BOXTEXT = rootdispersion  <$EEPSILON> =<R>
<$Eepsilon~+~phi tau~+~epsilon sub sigma~+~epsilon sub xi~+><R>
<$EEPSILON prime~+~rho prime~+~phi prime tau prime~+~| THETA |>



@Z_CAPTION = 

@Z_BOXTEXT = <$EI sub 1>

@Z_BOXTEXT = 1

@Z_BOXTEXT = Correct DTS

@Z_BOXTEXT = Correct NTP

@Z_BOXTEXT = D<R>
<F128M><141><F255D>

@Z_BOXTEXT = A<R>
<F128M><141><F255D>

@Z_BOXTEXT = B<R>
<F128M><141><F255D>

@Z_BOXTEXT = C<R>
<F128M><141><F255D>



@Z_CAPTION =