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INSTRUCTION MANUAL

MODEL 2099-42 CLOCK GENERATOR

Data, drawings, and other material contained herein are proprietary to Cross Technologies, 
Inc., but may be reproduced or duplicated without the prior permission of Cross 
Technologies, Inc. for purposes of operating the equipment.

When ordering parts from Cross Technologies, Inc., be sure to include the equipment 
model number, equipment serial number, and a description of the part.

First Edition

October 2005

Rev A 10/27/05

  

    

C

ROSS 

T

ECHNOLOGIES, INC.

6170 SHILOH ROAD

ALPHARETTA, GEORGIA 30005

(770) 886-8005 (PHONE)

(770) 886-7964 (FAX)

1-888-900-5588 (TOLL FREE)

www.crosstechnologies.com 

info@crosstechnologies.com

2099-42 manual Rev. A

Page 1

10/27/2005

Summary of Contents for 2099-42

Page 1: ...oses of operating the equipment When ordering parts from Cross Technologies Inc be sure to include the equipment model number equipment serial number and a description of the part First Edition Octobe...

Page 2: ...rials and workmanship for a period of one year after shipment to customer Cross Technologies Inc s obligation under this warranty is limited to repairing or at Cross Technologies Inc s option replacin...

Page 3: ...manually selects internal or external lock to 10 MHz control of the VCXO Diodes on the DC inputs allow operation from redundant power supplies An open collector indicates Manual operation and relay c...

Page 4: ...or AUTO select Int Freq Adjusts frequency of internal VCXO when not locked to external 10 MHz INT EXT LED LED lights RED if VCXO controlled internally Green if locked to external 10 MHz MAN LED LED li...

Page 5: ...nput Output Signals Figure 2 3 shows the input and output signals to the 2099 42 Table 2 1 is a description of the connectors and J4 pin functions 2 4 Jumper Settings Figure 2 4 and Table 2 2 show jum...

Page 6: ...moved the PLL will lose lock and will force the internal VCXO to have the frequency set by front panel potentiometer R20 R20 DOES control the VCXO in this mode if it has automatically switched to Inte...

Page 7: ...ll light occasionally depending on how far off in frequency the VCXO is set from locking to it DS3 EXTERNAL REFERENCE PRESENT LED Lights GREEN when 10 MHz external reference is present and RED if belo...

Page 8: ...RS422 Clock A output 6 NOT USED 7 NOT USED 8 15 VDC Backup In 180 ma max 9 15 VOLTS 180 ma max from J2 Main Power Supply 10 MAJOR Alarm relay output Open or short selectable to pin 12 if PLL alarm or...

Page 9: ...EQUENCY N A N A N A JUMPER POSITION SELECTS 64 TO 256 CLOCK FREQUENCY CH A JP5 CLOCK A FREQUENCY N A N A N A JUMPER POSITION SELECTS 64 TO 256 CLOCK FREQUENCY CH B TABLE 2 2 JUMPER DESCRIPTIONS K1 R20...

Page 10: ...and clock B RS422 outputs The external 10 MHz reference frequency also goes to buffer amplifier U7 which drives peak detector CR8 and then goes to op amp U8 the output of which provides a 5 signal if...

Page 11: ...T MANUAL ALARM UP U3 INT EXT CLOCK PIN 2 PIN 3 VCXO INT FREQ R20 12 288 MHZ VCXO 5V REG VR3 15 A 15B 15 A 15B 12 12 5 12V REG VR1 12V REG VR2 U10 U5 U6 Q2 256 128 64 192 96 INT EXT CLOCK RED GREEN REF...

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