EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE

Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk

SYNCHRONOUS TIMING MODULES

TMB SERIES SYNCHRONOUS TIMING MODULES

8kHz Inputs, LVPECL outputs <622.080MHz

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AUTO

RESET

ENABLE

A/B

SELECT

REF A

REF B

FR

FR

STATUS

ALARM

Q

Q

NOTE

0

1

0

X

X

X

X

1

X

X

X

FR

0

X

1

X

X

X

X

X

X

0

1

0

0

0

X

X

X

1

1

X

X

X

FR

0

0

0

0

A

A

0

0

0

X

X

RA

0

0

0

1

A

A

0

0

0

X

X

RB

0

0

0

0

NA

A

0

0

1

X

X

NL

0

0

0

1

NA

A

0

0

0

X

X

RB

0

0

0

1

A

NA

0

0

1

X

X

NL

0

0

0

0

A

NA

0

0

0

X

X

RA

0

0

0

X

NA

NA

0

1

1

X

X

FR

1

0

0

X

A

A

0

0

0

X

X

RA*

1

0

0

X

A

NA

0

0

0

X

X

RA*

1

0

0

X

NA

A

0

0

0

X

X

RB**

1

0

0

X

NA

NA

0

1

1

X

X

FR

KEY

A: ACTIVE

FR: FREE RUN MODE

RA: LOCKED TO A

RB: LOCKED TO B

NA: NOT ACTIVE

NL: NOT LOCKED

X: DON’T CARE

PAD CONNECTION DESCRIPTION

1

ENABLE

VCXO Enable (0=Enable, 1= Disable)

2

NC

Not connected

3

NC

Not connected

4

REF A

Reference Input A

5

A/B SEL

Reference Select (0=Input A, 1=Input B)

6

RESET

Reset (Reset = 1)

7

REF B

Reference Inpt B

8

GRN

Ground

9

FR STATUS

Free Run Status (Unit on Free Run = 1)

10

Vcc

Supply Voltage (+3.3VDC)

11

AUTO

Automatic Function

12

ALARM

Loss of Reference (Alarm = 1)

13

FR

Force Free Run (Free Run = 1)

14

NC

Not connected

15

NC

Not connected

16

Q

LVPECL Complimentary Output

17

GRN

Ground

18

Q

LVPECL Output

Pad No. Pad Name

Description of Function

INPUT SELECTION AND OUTPUT RESPONSE

* If AUTO is on (1) the system will lock to REF A

** If REF A is lost the system will lock to REF B automatically; if both References are lost the unit go into FREE RUN.