Model 2416-x25
Multi Channel Downconverter
2416-425 Four Channel • 2416-325 Three Channel • 2416-225 Two Channel • 2416-125 One Channel
1.0 General
1.1 Equipment Description
The 2416-425 Downconverter has four individual channels, each one converts 2000 to 2500 MHz to 70 MHz in
125 kHz steps using PLL in “exact frequency mode” with low group delay and flat frequency response.
Synthesized local oscillators (LO) provide frequency selection. Multi-function push button switches select the
input frequency, gain, and other parameters. Front panel LEDs provide indication of DC power, PLL alarm or
Remote operation. Gain is adjustable manually over a 0 to +30 dB range. The frequency and gain of each
channel are also remotely selectable. Parameter selection and frequency and gain settings appear on the LCD
display. Connectors are BNC female for the RF IN, and BNC female for the RF OUT and external 10 MHz
reference input and output. The table below shows available options. The 2416-425 is powered by a 100-240
±10% VAC, 47-63 Hz power supply, and is contained in a 1 3/4” X 19” X 16” rack mount chassis.
* 2416-425, Four (4) Channels, 2416-325, Three (3) Channels, 2416-225, Two (2) Channels, 2416-125, One (1) Channel.
MENU
EXECUTE
MODEL 2416
C
ROSS
T
ECHNOLOGIES INC.
DOWNCONVERTER
REMOTE POWER
ALARMS
2001.125 2110.500
2210.000 2301.750
------ CH 1 -------- ------ CH 2 --------
1
2
3
4
------ CH 3 -------- ------ CH 4 --------
FRONT PANEL (2416-425 - Four Channel show)
AC
GND
J11
J12
AND
MONITOR
CONTROL
1
5
2
3
4
6
7
8
9
CHANNEL 4
RF
IN
J10
VDC
on
RF
J9
RF
OUT
CHANNEL 3
RF
IN
J8
VDC
on
RF
J7
RF
OUT
CHANNEL 1
RF
IN
J2
VDC
on
RF
J1
RF
OUT
10 MHZ EXT
REF IN
10 MHZ IN/OUT
J4
J3
10 MHZ
REF OUT
CHANNEL 2
RF
IN
J6
VDC
on
RF
J5
RF
OUT
REAR PANEL (2416-425 - Four Channel show with optional Ethernet)
FIGURE 1.1 Model 2416-x25 Front and Rear Panels
SW,PLL,ATT,
10M CONTROL
M&C
CONTROLLER
EXT
10MHz
INT 10MHz
10MHz
TO
VCOs
2416-425
Block
Diagram
2000 to 2500 BP
1750 MHz BP
3.75 to
4.25 GHz
var
atten
70
MHz
OUT
1820
MHz
200 MHz LP
2.00
to
2.50
GHz
IN
SAME FOR FREQUENCY CHANNEL 2
SAME FOR FREQUENCY CHANNEL 3
SAME FOR FREQUENCY CHANNEL 4
2001.125 2110.500
2210.000 2301.750
------ CH 1 -------- ------ CH 2 --------
------ CH 3 -------- ------ CH 4 --------
FIGURE 1.2 Model 2416-x25 Downconverter Block Diagram
(Block Diagram applies to Models 2416-125, 225, 325 & 425)
2416-425 Manual
Page 3
11/17/21
