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MODEL 2083-914A Frequency Translator

1.0  General

1.1  Equipment Description
The 2083-914A Frequency Translator converts a 95 MHz signal to 140 MHz or a 140 MHz signal to 95 MHz 
with no spectrum inversion, low group delay, and flat frequency response. The 140 MHz end center frequency 
is adjustable from 110 to 170 MHz in 1 MHz steps. The 95 MHz or 140 MHz IF input is mixed with 
synthesized local oscillator (LO) signals, first to 1750 MHz and finally to 140 MHz or 95 MHz. Multi-function 
push button switches select the translation, gain, and the 140 MHz end center frequency (adjustable from 110 to 
170 MHz). Frequency translation and gain (-10 to 0 dB, adjustable in 1 dB steps) settings appear on the LCD 
display. Front panel LEDs light when DC power is applied (green), a PLL alarm occurs (red), the signal is 
muted (yellow), or remote control is active (yellow). A 10 MHz input allows for connection of an external 10 
MHz reference. The 10 MHz output contains the 10 MHz reference signal (be it internal or external). 
Connectors are BNC female for the IF and 10 MHz input and output. The 2083-914A Translator is housed in a 
1 3/4” X 19” X 16” deep rack mount chassis. Option -H provides a 0.01 ppm high stability reference.
 

MENU

EXECUTE

MODEL 2083

C

ROSS 

T

ECHNOLOGIES INC.

95 > 140

MUTE

POWER

ALARM

TRANSLATOR

REMOTE

ATN=00   REF=INT

FRONT PANEL

AC

GND

J4

J3

J10

J18

10 MHZ REF

10 MHZ

IF IN

AND

MONITOR

EXT REF

CONTROL

J1

IF OUT

OUTPUT

INPUT

1

5 2

3

4

6

7

8

9

REAR PANEL

FIGURE 1.1 Model 2083-914A Front and Rear Panels

110 to 170

MHz Fc

or

95 MHz

OUT

95 MHz

or

110 to 170

MHz Fc

IN

CONTROLLER

95 > 145
ATN=00  REF=INT

1750 MHz

BP

1845

or

1860 to 1920

MHz

1860 to 1920

or

1845

MHz

200 MHz

LP

EXT

10MHz

INT

10MHz

FIGURE 1.2 Model 2083-914A Translator Block Diagram

2083-914A Manual 

 

 

 Page 3

    

    9/27/10

Содержание 2083-914A

Страница 1: ...es 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 inc...

Страница 2: ...ent to customer Cross Technologies Inc s obligation under this warranty is limited to repairing or at Cross Technologies Inc s option replacing parts subassemblies or entire assemblies Cross Technolog...

Страница 3: ...the signal is muted yellow or remote control is active yellow A 10 MHz input allows for connection of an external 10 MHz reference The 10 MHz output contains the 10 MHz reference signal be it interna...

Страница 4: ...Characteristics Frequency Accuracy 70 Hz max over temp 1 0 ppm internal ref 0 01 ppm option H Reference 10 MHz Internal or External selectable 10 MHz level In and Out 3 dBm 3 dB 50 or 75 ohms Step Siz...

Страница 5: ...2083 914A Manual Page 5 9 27 10...

Страница 6: ...arm Relay Normally Closed B Status Requests Table 1 1 lists the status requests for the 2083 914A and briefly describes them TABLE 1 1 2083 914A Status s Requests Status Requests TABLE 1 1 2083 914A S...

Страница 7: ...command stop byte TABLE 1 2 2083 914A Command ds Commands Command Syntax Description Set Frequency Translation Mode C1x where x 0 for 140 to 95 Mode x 1 for 95 to 140 Mode Set 140 MHz End Center Freq...

Страница 8: ...s A switching 12 24 5 VDC power supply provides power for the assemblies The 2083 914A can be secured to a rack using the 4 holes on the front panel but must be supported by a bracket on the bottom Fi...

Страница 9: ...Male Protocol RS 232C 9600 baud rate no parity 8 data bits 1 start bit 1 stop bit 2 3 Front Panel Controls and Indicators The following are the front panel controls and indicators MENU EXECUTE 70 145...

Страница 10: ...l used 10 to 20 dBm See Section 2 5 Menu Settings 7 Set the attenuation for 0 to 10 dB See Section 2 5 Menu Settings 8 Be sure DS6 green POWER is on and DS2 red ALARM is off Figure 2 2 9 AC Fuse The f...

Страница 11: ...u Execute switch and must also end with the operation of the Menu Execute switch verified by the Save Settings Menu If this sequence is not followed none of the changes will take effect If programming...

Страница 12: ...m will return to the normal operating mode or scroll to R and push the MENU EXECUTE switch and select NO in the SAVE SETTINGS window To change the Frequency Translation 1 Operate the Menu Execute swit...

Страница 13: ...window To change the Frequency Translation 140 95 TRANSLATION MODE 140 MHZ END CENTER FREQUENCY CHANGES To change the 140 MHz end frequency push the Menu Execute switch until you get to IF IN 140 MHz...

Страница 14: ...have the desired frequency NOTE CHANGES DO NOT TAKE PLACE ON FREQUENCY UNTIL YOU GO TO THE SAVE MENU AND INDICATE YOU WANT TO SAVE THE CHANGES THE CARRIER IS MUTED WHEN FREQUENCY IS CHANGED When the d...

Страница 15: ...thing for approximately 30 seconds and the system will return to the normal operating mode To change the translator attenuation push the Menu Execute switch until you get to the ATTN setting ATTN 00 R...

Страница 16: ...Up Normal Display Menu 1 Frequency Translation Mode Menu 2 140 Center Freq 110 to 170 Menu 3 Input Level 20 to 10 Menu 4 Attenuation 00 to 10 Menu 5 Mute Menu 6 Select External 10MHz Reference Menu 7...

Страница 17: ...he equipment is not compromised Additional space between unit may be required E Circuit Overloading Consideration should be given to the connection of the equipment to the supply circuit and the effec...

Страница 18: ...IES INC 6170 Shiloh Road Alpharetta Georgia 30005 770 886 8005 FAX 770 886 7964 Toll Free 888 900 5588 WEB www crosstechnologies com E MAIL info crosstechnologies com Printed in USA 2083 914A Manual P...

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