Cross Technologies 2016-8085 User manual

Instruction Manual Model 2016-8085
Downconverter
May 2022, Rev. 0
MENU
EXECUTE
MODEL 2016
CROSS TECHNOLOGIES INC.
REMOTE
POWER
ALARM
DOWNCONVERTER
F=8150.125 G=30
REF=INT
Data, drawings, and other material contained herein are proprietary to Cross Technologies, 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 include the equipment model number,
equipment serial number, and a description of the part.
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
[phone]
FAX [phone]
Toll Free 888-900-5588
WEB www.crosstechnologies.com
E-MAIL [email protected]

INSTRUCTION MANUAL
MODEL 2016-8085 Downconverter
TABLE OF CONTENTS PAGE
Warranty 2
1.0 General 3
1.1 Equipment Description 3
1.2 Technical Characteristics 4
1.3 Monitor & Control Interface 6
1.4 Environmental Use Information 10
2.0 Installation 11
2.1 Mechanical 11
2.2 Rear Panel Inputs & Outputs 12
2.3 Front Panel Controls & Indicators 12
2.4 Operation 13
2.5 Menu Settings 14
WARRANTY - The following warranty applies to all Cross Technologies, Inc. products.
All Cross Technologies, Inc. products are warranted against defective materials and
workmanship for a period of one year after shipment 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 Technologies, Inc. shall
not be liable for any special, indirect, or consequential damages. This warranty does not
cover parts or equipment which have been subject to misuse, negligence, or accident by the
customer during use. All shipping costs for warranty repairs will be prepaid by the
customer. There are not other warranties, express or implied, except as stated herein.
CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
[phone]
FAX [phone]
Toll Free 888-900-5588
WEB www.crosstechnologies.com
E-MAIL [email protected]
2016-8085 Manual_Rev. 0 Page 2 05/10/22

MODEL 2016-8085 Downconverter
1.0 General
1.1 Equipment Description
The 2016-8085 Downconverter converts 8.0 to 8.5 GHz to 70 ± 18 MHz in 125 kHz steps (1 kHz steps, option
X1006) with low group delay and flat frequency response. Synthesized local oscillators (LO) provide low phase
noise and ±0.01 ppm stability frequency selection. Multi-function push button switches select the RF
frequency, gain, and other parameters. Front panel LEDs provide indication of DC power (green), PLL alarm
(red), and remote operation (yellow). Gain is adjustable manually over a +30 to +50 dB range 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 output and the 10MHz reference input and output, and Type N (female) for the RF input. External 10
MHz is standard. A 10 MHz output connector contains either the internal or external 10 MHz reference signal.
It is powered by a 100-240 ±10% VAC power supply, and in a 1 3/4” X 19“ X 16” rack mount chassis.
MENU
EXECUTE
MODEL 2016
CROSS TECHNOLOGIES INC.
REMOTE
POWER
ALARM
DOWNCONVERTER
F=8150.125 G=30
REF=INT
FRONT
AC
GND
J3
J10
J18
J2
RF IN
10 MHZ REF
OUTPUT
10 MHZ
EXT REF
INPUT
MONITOR
AND
CONTROL
J1
IF OUT
1
5
2
3
4
6
7
8
9
J20
REAR
FIGURE 1.1 Model 2016-8085 Front and Rear Panels
8.0
to
8.5
GHz
IN
70
MHz
OUT
CONTROLLER
F=8150.125 G=30
REF=INT
VAR
ATT
EXT
10 MHz
VAR
ATT
INT
10 MHz
Block Diagram
FIGURE 1.2 Model 2016-8085 Downconverter Block Diagram
2016-8085 Manual_Rev. 0 Page 3 05/10/22

1.2 Technical Characteristics
Technical Characteristics continued on page 5...
2016-8085 Manual_Rev. 0 Page 4 05/10/22
Other
100-24 ±10% VAC, 47-63 Hz, 45 watts maximum
Power
19 inch, 1 RU Standard Chassis 1.75” high X 16.0” deep
Size
DB9 - NO or NC Contact Closure on Alarm
Alarm/Remote Connector
BNC (female), 75Ω, works with 50 or 75 ohms
10 MHz Connectors
RF Type N (female), 50Ω/RF - BNC (female), 75Ω
RF Connectors
TABLE 1.0 2016-8085 Downconverter Specifications*
15 dB (maximum gain)
Nosie Figure, maximum
-70 to -40 dBm
Level Range
8.0 to 8.5 GHz
Frequency
+10 dBm
1dB Compression
-20 to 0 dBm
Level Range
Output Characteristics (IF)
Input Characteristics (RF)
70 ±18 MHz
Frequency
75Ω/ 20 dB minimm, 18 dB minimum
Impedance / Return Loss
50Ω/ 20 dB typical; 18 dB minimum
Impedance / Return Loss

Technical Characteristics continued from page 4...
2016-8085 Manual_Rev. 0 Page 5 05/10/22
- W7 RF/IF Monitor Ports (Front)
- W31 Extended Temperatue 0C to +50C
- W1006 1 kHz fequency step
-50ΩType N (RF), 75ΩBNC (IF)
- STD
Ethernet with TCP/IP, Telnet®
- W28
50ΩSMA (RF), 75ΩBNC (IF)
- S7
50ΩSMA (RF), 50ΩBNC (IF)
- S
50ΩType N (RF), 50ΩBNC (IF)
- M
Contact Cross for other options.
Connectors/Impedance
Ethernet with Web Browser & SNMP
- W18
Ethernet with Web Browser
- W8
Ethernet with W18 + W28
- W828
RS-485/422
- Q
Remote M&C Interfaces
Available Options
*10˚C to 40˚C; Specifications subject to change without notice ® 2022 Cross Technologies, Inc.

1.3 Monitor and Control Interface
A) Remote serial interface
Protocol: RS-232C, 9600 baud rate, no parity, 8 data bits, 1 start bit, and 1 stop bit.
(RS-232C, RS-422, or RS-485 - option -Q)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Female DB-9
PC Com Port
Male DB-9
2015/16/17 M&M&C
Port
M&C Cable Diagram - Cross Technologies Frequency Converters
Connector: Rear panel, DB-9 female
J10 Pinouts (RS-232C/422/485)
J10 Pinouts (RS-232C/422/485)
Pin Function
1 Rx-
2 Rx+ (RS-232C)
3 Tx+ (RS-232C)
4Tx-
5GND
6 Alarm Relay: Common
7 Alarm Relay: Normally Open
8 Not Used
9 Alarm Relay: Normally Closed
2016-8085 Manual_Rev. 0 Page 6 05/10/22

B) Status Requests
Table 1.1 lists the status requests for the 2016-8085 and briefly describes them.
*PLEASE NOTE: The two character {aa}(00-31) prefix, in the table below,
should be used ONLY when RS-485, (OPTION-Q), is selected.
TABLE 1.1 2016-8085 Status Requests/Inquires
TABLE 1.1 2016-8085 Status Requests/Inquires
TABLE 1.1 2016-8085 Status Requests/Inquires
Command Syntax* Description
Frequency Inquiry {aaSF} Returns: {aaSFxxxxxxx}
Where:
• aa = unit address, range = 00 to 31, only used if
interface is RS485, otherwise omit
• F = command code
• xxxxxxx = frequency in kHz
The unit will append the '>' character if the command
is sucessfully processed.
Gain Inquiry {aaSG} Returns: {aaSGxx}
Where:
• aa = unit address, range = 00 to 31, only used
if interface is RS485, otherwise omit.
• G = command code
• xx = unit's gain setting in dB
The unit will append the '>' character if the
command is sucessfully processed.
Reference Mode Inquiry {aaSE} Returns: {aaSEx}
Where:
• aa = unit address, range = 00 to 31, only used if
interface is RS485, otherwise omit.
• E = command code
• x = 0 if reference mode is internal,
x = 1 if external, x = 2 if auto
The unit will append the '>' character if the command is
sucessfully processed.
Alarm Inquiry {aaSA} Returns: {aaSAx}
Where:
• aa = unit address, range = 00 to 31, only used if
interface is RS485, otherwise omit
• A = command code
• x = 0 if alarm is off, x = 1 if alarm is on.
The unit will append the '>' character if the
command is sucessfully processed.
2016-8085 Manual_Rev. 0 Page 7 05/10/22

C) Commands - Table 1.1 lists the commands for the 2016-8085 and briefly describes them. After a
command is sent, the 2016-8085 sends a return “>” indicating the command has been received and executed.
General Command Format - The general command format is {aaCND...}, where:
{ = start byte
aa = address (RS-485 only - option -Q)
C = 1 character, either C (command) or S (status)
N = 1 character command or status request
D = 1 character or more of data (depends on command)
} = stop byte
*PLEASE NOTE: The two character {aa}(00-31) prefix, in the table below,
should be used ONLY when RS-485, (OPTION-Q), is selected.
Table 1.2 2016-8085 Commands
Table 1.2 2016-8085 Commands
Command Syntax* Description
Set Frequency {aaCFxxxxxxx} Where:
• aa = unit address, range = 00 to 31, only used if
interface is RS485, otherwise omit
• F = command code
• xxxxxxx=frequency in kHz, range = 8000000 to 8500000
(8000.000 to 8500.000 MHz, 0.125 MHz steps)
example: {CF8175125}
Will set the unit's frequency to 8175.125 MHz
The unit will reply with the '>' character if the command
is sucessfully processed.
Set Gain {aaCGxx} Where:
• aa = unit address, range = 00 to 31, only used if interface
is RS485, otherwise omit.
• G = command code
• xx = gain in dB, range = 30 to 50 in 1.0 dB steps.
example: {CG34}
Will set the unit's gain to 34.0 dB
The unit will reply with the '>' character if the
command is sucessfully processed.
Set Reference Mode {aaCEx} Where:
• aa = unit address, range = 00 to 31, only used if
interface is RS485, otherwise omit
• E = command code
• x = 0 to set to internal reference,
• x = 1 to set to external reference
example: {CE1}
Will set the reference mode to External.
The unit will reply with the '>' character
if the command is sucessfully processed.
(Continued on page 9)...
2016-8085 Manual_Rev. 0 Page 8 05/10/22

(Continued from page 8)...
Table 1.2 2016-8085 Commands, (continued)...
Table 1.2 2016-8085 Commands, (continued)...
Table 1.2 2016-8085 Commands, (continued)...
Command Syntax* Description
Set Remote Off {aaCR0} Where:
• aa = unit address, range = 00 to 31, only used if
interface is RS485, otherwise omit.
• R = command code
• 0, ascii number zero.
example: {CR0}
Will disable the unit's serial M&C port.
The unit will reply with the '>' character if the
command is sucessfully processed.
(Note: this command only affects the serial M&C port,
the ethernet port is always on and will not be affected).
Set Remote On # Just the ascii pound sign, (0x23)
Will enable the unit's serial M&C port.
The unit will reply with the '>' character if
the command is sucessfully processed.
(Note: this command only affects the serial M&C port,
the ethernet port is always on and will not be affected).
2016-8085 Manual_Rev. 0 Page 9 05/10/22

1.4 Environmental Use Information
A.Rack-Mounting - To mount this equipment in a rack, please refer to the installation instructions
located in the user manual furnished by the manufacturer of your equipment rack.
B. Mechanical loading - Mounting of equipment in a rack should be such that a hazardous condition
does not exist due to uneven weight distribution.
C.Elevated operating ambient temperature - If installed in a closed or multiunit rack assembly,
the operating ambient temperature of the rack may be greater than room ambient temperature.
Therefore, consideration should be given to Tmra (Maximum Recommended Ambient Temperature).
D. Reduced air flow - Installation of the equipment in a rack should be such that the amount of air flow
required for safe operation of the equipment is not compromised. Additional space between units
may be required.
E. Circuit Overloading - Consideration should be given to the connection of the equipment to the supply
circuit and the effect that overloading of circuits could have on over current protection and supply wiring.
Appropriate consideration of equipment name plate rating should be used, when addressing this concern.
F. Reliable Earthing - Reliable earthing of rack-mounted equipment should be maintained. Particular
attention should be given to supply connections other than direct connection to the Branch
(use of power strips).
G. Top Cover - There are no serviceable parts inside the product so, the Top Cover should not be removed.
If the Top Cover is removed the ground strap and associated screw MUST BE REINSTALLED
prior to Top Cover screw replacement. FAILURE TO DO this may cause INGRESS and/or EGRESS
emission problems.
2016-8085 Manual_Rev. 0 Page 10 05/10/22

2.0 Installation
2.1 Mechanical
The 2016-8085 consists of one RF/Controller PCB housed in a 1 RU (1 3/4 inch high) by 16 inch deep chassis.
A switching, ±12, +24, +5 VDC power supply provides power for the assemblies. The 2016-8085 can be
secured to a rack using the 4 holes on the front panel. Figure 2.1 shows how the 2016-8085 is assembled.
POWER
SUPPLY
FIGURE 2.1 2016-8085 Mechanical Assembly
2016-8085 Manual_Rev. 0 Page 11 05/10/22

2.2 Rear Panel Input/Output Signals
Figure 2.2 shows the input and output connectors on the rear panel.
J3 - 10 MHz EXT REF INPUT
+3 dBm ± 3 dB, 10 MHz external
reference input.
50/75 ΩBNC (female)
AC - POWER IN
AC input for switching power supply.
100-240 ±10% VAC, 47-63 Hz.
J2 - RF IN
8.0 to 8.5 GHz,
-70 to -40 dBm input signal.
Type N (female) see Table 2.2.
J1 - IF OUT
70 MHz (±18 MHz BW) ;
-20 to 0 dBm output signal.
BNC (female) see Table
2.2.
J10 - MONITOR AND CONTROL
DB9 (female) - see Table 2.1
J18 - 10 MHz REF OUTPUT
+3 dBm ± 3 dB, 10 MHz reference
output. 50/75 ΩBNC (female).
J20 - ETHERNET
CONNECTOR
(option W8/W18/ W28/W828)
AC
GND
J3
J10
J18
J2
RF IN
10 MHZ REF
OUTPUT
10 MHZ
EXT REF
INPUT
MONITOR
AND
CONTROL
J1
IF OUT
1
5
2
3
4
6
7
8
9
J20
FIGURE 2.2 2016-8085 Rear Panel I/Os
TABLE 2.1 J10 Pinouts (RS-232C*)
TABLE 2.1 J10 Pinouts (RS-232C*)
Pin Function
1 Not Used
2 Rx+ (RS-232C)
3 Tx+ (RS-232C)
4 Not Used
5GND
6 Alarm Relay: Common
7 Alarm Relay: Normally Closed
8 Not Used
9 Alarm Relay: Normally Open
TABLE 2.2 RF Connector Options
TABLE 2.2 RF Connector Options
TABLE 2.2 RF Connector Options
Option RF RF
MBNC, 50ΩType N, 50Ω
NBNC, 75ΩType N, 50Ω
SBNC, 50ΩSMA, 50Ω
SS SMA, 50ΩSMA, 50Ω
*Remote Serial Interface
Interface: DB-9 Female
Protocol: RS-232C, 9600 baud rate, no parity,
8 data bits, 1 start bit, 1 stop bit
2.3 Front Panel Controls and Indicators
Figure 2.3 shows the front panel controls and indicators.
MENU
EXECUTE
REMOTE
ALARM
POWER
LCD DISPLAY
Display shows Downconverter
frequency in MHz and Gain in dB
S1 - MENU/EXECUTE BUTTON
Press this to get into Program mode
and to execute any changes.
DS3 - ALARM LED
Red LED indicates
downconverter alarm.
DS6 - POWER LED
Green LED indicates
presence of DC power.
DS1 - REMOTE LED
Yellow LED indicates
remote operation.
S2 - VERT. TOGGLE
Vertical toggle switch that controls values in the
Menu items when in program mode. Does not
function in the normal display mode
S3 - HORIZ. TOGGLE
Horizontal toggle switch that controls
which values are being adjusted. Does
not function in the normal display mode
F=8150.125 G=30
REF = INT
FIGURE 2.3 2016-8085 Front Panel Controls and Indicators
2016-8085 Manual_Rev. 0 Page 12 05/10/22

2.4 Operation
2.4.1 Installing and Operating the 2016-8085 Downconverter
1. Connect a -70 dBm to -40 dBm signal to RF IN, J2 (Figure 2.2)
2. Connect the IF OUT, J1, to the external equipment
3. Connect 100- 240 ± 10% VAC, 47 - 63 Hz to AC on the back panel.
4. Set the input frequency (See Section 2.5 Menu Settings).
5. Set the gain for +30 to +50 dB (See Section 2.5 Menu Settings).
6. Be sure DS6 (green, DC Power) is on and DS3 (red, Alarm) is off (Figure 2.3).
7. AC Fuse - The fuse is a 5 mm X 20 mm, 2 amp slow blow (Type T) and is inserted in the far slot in
the drawer below the AC input as shown in Figure 2.4. There is a spare fuse in the near slot. If a fuse
continues to open, the power supply is most likely defective.
AC Fuse - 2 amp slow blow (Type T),
5 mm X 20 mm
FUSE DRAWER
SPARE FUSE
~
INPUT
100-240± 10%VAC
47-63 Hz
2A MAX
FUSE
TYPE T 2A GDC
250 VOLT
FOR 100 - 240 V~
~
FIGURE 2.4 Fuse Location and Spare Fuse
2016-8085 Manual_Rev. 0 Page 13 05/10/22

2.5 Menu Settings
2.5.1 Functions
This section describes operation of the front panel controls. There are three operator switches, the
LCD display and alarm indicator LEDs. All functions for the equipment are controlled by these components.
The functions are (see Figure 2.5):
Power Up
Normal Display
Menu 1 Frequency in kHz
Menu 2 Gain (+30 to +50)
Menu 3 Set Unit to Remote Operation
Menu 4 Select Reference Mode
Menu 5 Set Remote Mode (option Q)
Menu 6 Set RS-485 Address (option Q)
Save Menu When “R” is selected in any above menu or at the end of the menu options.
Alarm indications appear on the LEDs (see figure 2.3).
All program changes must start with the operation of the Menu/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 is initiated and no operator action takes place for
approximately 30 seconds (before the final press of the Menu/Execute switch) the display will revert to its
previous status and you will need to start over.
2016-8085 Manual_Rev. 0 Page 14 05/10/22

2.5.2 Power On Settings
NOTE: THE LAST STATUS OF A UNIT IS RETAINED EVEN WHEN POWER IS REMOVED.
WHEN POWER IS RESTORED, THE UNIT WILL RETURN TO ITS PREVIOUS SETTINGS.
When power is first applied, the LCD display goes through three steps.
1. The LCD goes black to show all segments are functioning.
2. The software version will be displayed.
REV 1.00
3. The presnt frequency and gain of the downconverter is shown.
F = 8150.125 G=30
REF = INT
The unit is now operational and ready for any changes the operator may desire.
2.5.3 Control Switches
1. Menu/Execute - Any change to the programming of the unit must be initiated by
pressing the Menu/Execute switch and completed by pressing the Menu/Execute switch.
2. Horizontal Switch - This switch is mounted so its movement is horizontal and moves the cursor
left or right.
3. Vertical Switch - This switch is mounted so its movement is vertical and has two functions:
a. During frequency, gain changes, the vertical movement will raise or lower the
number in the direction of the arrows.
b. For other functions such Mute on/off, the vertical switch will alternately turn
the function on or off regardless of the direction operated.
2016-8085 Manual_Rev. 0 Page 15 05/10/22

2.5.4 Frequency Changes
At any time during the modification process, if you have made a mistake and do not wish to save the changes
you have made, do not press the Menu/Execute switch; simply do nothing for approximately 30 seconds,
and the system 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:
Operate the Menu/Execute switch until you get to the menu item you want to change see Figure 2.5
for the sequence of menu options. The following display is for changing the downconverter frequency:
F = 8100.000
R
Pressing the Up/Down switch down will toggle the display to:
F = 8200.000
R
By using the horizontal rocker switch the cursor can be moved left or right .
F = 8200.000
R
NOTE: CHANGES DO NOT TAKE PLACE ON FREQUENCY UNTIL YOU GO TO
THE SAVE MENU AND INDICATE YOU WANT TO SAVE THE CHANGES.
When the display indicates the value desired you can push the Menu/Execute switch to get to the next item:
G = +30
R
OR you can scroll to “R”, push the Menu/Execute switch to get to:
SAVE SETTINGS?
YN
Selecting Ywill save the new settings. Selecting Nwill revert to the previous settings.
Pushing the Menu/Execute switch then takes you to this:
F = 8150.125 G=30
REF = INT
Figure 2.5 gives the menu items and how to make changes.
2016-8085 Manual_Rev. 0 Page 16 05/10/22

2.5.5 Gain Changes
When you get to this menu note that the gain changes will be made as you make them but if you do not wish to
save the changes you have made, scroll to “R” and push the Menu/Execute switch and select “NO” in the
“SAVE SETTINGS?” window or do not press the Menu/Execute switch; simply do nothing for
approximately 30 seconds, and the system will return to the normal operating mode.
To change the GAIN:
Push the Menu/Execute switch to get to the gain setting (See Figure 2.5 for the sequence of menu options):
G = +30
R
Pressing the Up/Down switch will change the gain in 1 or 10 dB steps depending on the cursor location:
G = +40
R
By using the horizontal rocker switch the cursor can be moved left or right.
Pressing the Up/Down switch will toggle the display digit selected until you have the desired gain.
G = +40
R
NOTE: THE GAIN WILL BE CHANGED AS YOU ADJUST THE NUMBERS. HOWEVER, THE
VALUE WILL NOT BE STORED UNTIL YOU INDICATE YES IN THE SAVE SETTINGS
WINDOW.
When the display indicates the value desired you can push the Menu/Execute switch to get to the next item:
REMOTE OFF
R
OR you can scroll to “R” and push the Menu/Execute switch to get to:
SAVE SETTINGS?
YN
Selecting Ywill save the new settings. Selecting Nwill revert to the previous settings.
Pushing the Menu/Execute switch then takes you to this:
F = 8150.125 G=30
REF = INT
Figure 2.5 gives the menu items and how to make changes.
2016-8085 Manual_Rev. 0 Page 17 05/10/22

2.5.5 Alarm Indications
An alarm condition for will occur if any local oscillator phase lock loop (PLL) comes out of lock.
The Mute LED will light if you select Mute and the Remote LED will light when you select the Remote mode.
ON POWER UP
NORMAL DISPLAY
PUSHING MENU/EXECUTE SEQUENCE
REV 1.00
F = 8150.125 G=30
REF=INT
PUSH BUTTON
Power Up
Normal Display
Menu 1 Set Frequency
Menu 2 Set Gain (+30 to +50)
Menu 3 Set Unit to
Remote Operation
Menu 4 Select External
10 MHz Reference
Menu 5 Set Remote Mode
(option -Q ONLY)
Menu 6 Set RS-485 Address
(option -Q ONLY)
Save Settings? At the end or
when “R” is selected from any of
the above menus
SAVE SETTINGS? YN
SCROLL <> PUSH BUTTON
F = 8150.125
SCROLL <>
SCROLL
PUSH BUTTON
R
G = +30
R
REMOTE OFF
SCROLL <>
SCROLL PUSH BUTTON
R
RS 485
SCROLL <>
SCROLL PUSH BUTTON
R
PUSH BUTTON
ADDRESS = 00
SCROLL <>
SCROLL PUSH BUTTON
R
REF MODE INT
SCROLL <>
SCROLL PUSH BUTTON
R
SCROLL <>
SCROLL PUSH BUTTON
FIGURE 2.5 Menu Display and Sequence
2016-8085 Manual_Rev. 0 Page 18 05/10/22

2.5.6 Alarm Indications
An alarm condition will occur if any local oscillator phase lock loop (PLL) comes out of lock.
The Remote LED will light when you select the Remote mode.
2.5.7 10 MHz Reference Mode Operation
Internal Mode: The unit uses its own built-in 10 MHz OCXO. The Internal Reference is present on the
Reference Output Connector, J18. REF = INT appears on the front panel display.
External Mode: The unit uses a 10 MHz Reference that is connected to the External Reference Input, J3.
REF = EXT appears on the front panel display. The External 10 MHz Reference level
must be +3, +/-3 dBm. If the External 10 MHz signal does not meet the unit’s
specified parameters then the unit will not function properly. The External Reference
is present on the Reference Output connector, J18.
2016-8085 Manual_Rev. 0 Page 19 05/10/22

CROSS TECHNOLOGIES, INC.
6170 Shiloh Road
Alpharetta, Georgia 30005
[phone]
FAX [phone]
Toll Free 888-900-5588
WEB www.crosstechnologies.com
E-MAIL [email protected]
2016-8085 Manual_Rev. 0 Page 20 05/10/22