Model 2017-74 Up/Downconverter
1.0 General
1.1 Equipment Description
The 2017-74 C-band Up/Downconverter converts 70 MHz to 6.7 - 7.025
GHz (Up) and 4.5 - 4.8 GHz to 70
MHz (Down) in 0.125 MHz steps with low group delay and flat frequency response. A common synthesized
local oscillator (LO) provides frequency selection for the Up and Down converter simultaneously. Multi-
function push button switches select the RF frequency, gain, and other parameters. Front panel LEDs provide
indication of DC power (green), PLL alarm for up and downconverters (red), remote operation (yellow), and
Upconverter mute (yellow). Gain can be manually controlled over a 0 to +30 dB range for the upconverter and
over a +30 to +50 dB range for the downconverter as adjusted by the front panel multi-function push-button
switches. Remote operation allows selection of frequency and gain. Parameter selection and frequency and gain
settings appear on the LCD display. Connectors are BNC female for IF and the optional external reference input
and output, and N female for RF. A high stability (±0.01ppm) option is also available. It is powered by a 100-
240 ± 10% VAC power supply and housed in a 1.75” X 19” X 16” 1RU chassis.
MENU
EXECUTE
MODEL 2017
C
ROSS
T
ECHNOLOGIES INC.
U F=6850.000 G=+10
D F=4600.000 G=+30
MUTE
UPCONVERTER
DOWNCONVERTER
REMOTE
ALARM POWER
ALARM
UP/DOWNCONVERTER
FRONT PANEL
AC
UPCONVERTER
GND
DOWNCONVERTER
J4
J3
J18
10 MHZ REF
10 MHZ
IF IN
EXT REF
J1
IF OUT
OUTPUT
INPUT
J10
AND
MONITOR
CONTROL
1
5 2
3
4
6
7
8
9
RF OUT
RF IN
J5
J2
REAR PANEL
Figure 1.1 Front and Rear Panels
70
MHz
OUT
4.5
to
4.8
GHz
IN
CONTROLLER
U F=6850.000 G=+10
D F=4600.000 G=+30
70
MHz
IN
6.7
to
7.025
GHz
OUT
REF
REF
REF
TO UP
VCOS
var
atten
EXT
10MHz*
*OPTIONAL
var
atten
var
atten
INT
10MHz
Figure 1.2 Block Diagram
2017-74 Manual, Rev. B
Page 3
10/27/10
