MODELS 2005-02 and 2005-03 Agile Upconverters
1.0 General
1.1 Equipment Description
The 2005 Upconverters are typically used to loop 70 or 140 MHz IF modulators to L-band receivers.
These IF signals must be “clean”(contain only the desired 70 or 140 MHz signal).
The 2005-02P4, for loop-back applications, converts a 70 MHz signal to a 950-2050 MHz output signal range in
1 MHz steps utilizing a high-side LO (C-band) that ranges from 1020 to 2120 MHz. The 2005-02 can also
operate over a limited output frequency range converting a 70 MHz signal to 1090-2050 MHz utilizing a low-side
LO (Ku-band), a 140 MHz signal to 950-1980 MHz utilizing a high-side LO, and a 140 MHz signal to 1160-2050
MHz utilizing a low-side LO.
The 2005-03P4, for loop-back applications, converts a 70 or 140 MHz signal to the full 950-1450 MHz output
signal range in 1 MHz steps with either a high-side LO (C-band) or a low-side LO (Ku-band). The LO frequency
ranges from 810 to 1590 MHz.
Featuring low phase noise, these units are used to loop 70 or 140 MHz modulators to L-band receivers in uplinks.
The 70 or 140 MHz carrier input is mixed with a synthesized local oscillator (LO) signal. The output frequency is
selected with four BCD switches which control the synthesized LO. Front panel LEDs light when DC power is
applied (green) and when a PLL alarm occurs (red). The mixer output is applied to the output attenuator providing
a nominal gain of -10 dB (high gain) or -30 dB (low gain). Power is provided by the LNB voltage from the
receiver under test and connectors are BNC (female) for the IF input and type F (female) for the RF output. The
2005 can be powered by an external wall mount power supply -P4. The 2005 can be mounted on a 1 3/4”x
19”rack mount panel (option -R).
DC POWER
RF OUT
IF IN
GAIN
HI LOW
J1
J3
J2
C
ROSS
T
ECHNOLOGIES, INC.
+DC IN
+15V, 600 ma
2005 TEST UPCONVERTER
C
ROSS
T
ECHNOLOGIES, INC.
DC
100MHz
FREQUENCY
10MHz 1MHz
GHz
LO
IF
C
KU
70 140
ALARM
FIGURE 1.1 Front and Rear Panels
70 or 140
MHZ
INPUT
950 - 2050 MHz (-02)
950 - 1450 MHz (-03)
1.0 - 2.1 GHz (-02)
0.8 - 1.6 GHz (-03)
ATTEN
1
3
8
3
CONTROLLER
FIGURE 1.2 Block Diagram
2005-02/03 Manual, Rev. J
Page 3
08/14/2019
