MODEL 2083-714A Frequency Translator
1.0 General
1.1 Equipment Description
The 2083-714A Frequency Translator converts a 70 MHz signal to 140 MHz or a 140 MHz signal to 70 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 70 MHz or 140 MHz IF input is mixed with
synthesized local oscillator (LO) signals, first to 1750 MHz and finally to 140 MHz or 70 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 2083-714A 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.
70 > 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
J5
IF OUT
OUTPUT
INPUT
1
5 2
3
4
6
7
8
9
REAR PANEL
FIGURE 1.1 Model 2083-714A Front and Rear Panels
70
or
140
MHz
IN
140
or
70
MHz
OUT
10 MHz
Reference
1750 MHz
1820
or
1890
MHz
200 MHz
LP Filter
1890
or
1820
MHz
FIGURE 1.2 Model 2083-714A Translator Block Diagram
2083-714A Manual, Rev. E
Page 3
06/13/12
