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Time code (optional), Principle of operation, Block diagram time code – Meinberg GPS170LCD-MP User Manual

Page 50: Time code, Optional)

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50

Time code

(optional)

Principle of Operation

The Board GPS170 has been designed for the generation of IRIG, AFNOR and

IEEE1344 standard time codes. Apart from the digitally generated amplitude-modula-
ted code, it also provides the unmodulated DC-Level shift code. The modulated sine
wave carrier and the board´s internal time pattern are derived from the radio clock´s
disciplined oscillator.

Block Diagram Time code

mi

cr

oc

o

n

tr

ol

le

r

m

odu

la

to

r

EPL

D

D

/A

c

onve

rt

er

dr

iv

er

50

u

nba

la

n

c

ed

Ω

d

ig

ita

l

si

n

ew

av

e

ge

n

e

ra

to

r

tim

ec

od

e

10 M

H

z

m

o

du

la

te

d

ti

m

ec

o

d

e

un

m

o

d

u

la

te

d

ti

mec

o

des

hi

gh

- an

d

lo

w-

ac

ti

v

e

PP

S

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