Novus NS2310D-R User manual

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
1 of 39
www.novuspower.com
ND2310D
10 Channel Distribution Amplifier w/SNMP
All information provide herein is the property of Novus Power Products LLC The
information included may be reproduced without the permission of Novus Power
Products LLC for the purpose of operating the equipment.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
2 of 39
www.novuspower.com
Contents
1.0 Summary ........................................................................................................3
2.0 Controls and Indicators –Front Panel.............................................................5
2.1 Channel Status............................................................................................6
2.2 Status LEDs ................................................................................................7
2.3 Input Status.................................................................................................7
2.4 Power Supply Status...................................................................................8
2.6 Alert Threshold............................................................................................9
2.7 Input Threshold .........................................................................................13
2.8 Input Select ...............................................................................................14
2.9 Latch Channel Values...............................................................................15
2.9 Save Configuration....................................................................................15
2.10 Fault Status.............................................................................................16
2.11 Power Switch...........................................................................................17
2.12 RS232 DB9 Port......................................................................................18
3.0 Rear Panel....................................................................................................19
3.1 Channel Outputs - BNC.............................................................................19
3.2 Status LEDs ..............................................................................................19
3.3 Signal Input A/B.........................................................................................20
3.4 24VDC Input..............................................................................................20
3.5 AC Input ....................................................................................................21
3.6 RS232 DB9 ...............................................................................................21
4.0 Functional Description ..................................................................................22
4.1 Bandwidth..................................................................................................23
4.2 Phase Noise..............................................................................................23
4.3 Outputs......................................................................................................24
4.4 Built in Test................................................................................................24
4.5 Power Supplies .........................................................................................24
5.0 Programming Guide (RS232 Port: Front and Rear)......................................25
5.1 RS232 Commands....................................................................................27
5.2 Status String ($GPNVS,1) Channel Measurements..................................30
5.3 Status String ($GPNVS,2) Power Supply Measurements .........................31
5.4 Status String ($GPNVS,3) Status Bytes....................................................32
5.5 Status Byte Key.........................................................................................33
5.6 Calibration Factors....................................................................................36
6.0 Technical Specification.................................................................................37
6.1 Technical specifications ............................................................................37
6.2 Environmental and Mechanical .................................................................37
7.0 LIMITED HARDWARE WARRANTY ............................................................38

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
3 of 39
www.novuspower.com
1.0 Summary
The ND2310D is a ten channel wide bandwidth distribution amplifier.
While primarily used for 10 MHz reference distribution, it has a functional
bandwidth from DC to 12 MHz but is filtered for the lowest phase noise
10MHz signal.
The amplifier is a low phase noise design to preserve the integrity of the
reference signal. All outputs are transient and fault-protected. The unit is
set up with ten outputs and dual inputs A and B. Gain is factory set for 0
dB.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
4 of 39
www.novuspower.com
The amplifier can also be optionally redundantly powered. The
redundancy feature adds a second power supply which may be AC or DC.
The dual input design monitors the input signals and selects the active
signal or the prioritized signal. Each output channel is monitored against a
defined set of thresholds. If a fault is detected, monitoring will report the
fault serially,
The unit features extensive reporting via the rear panel RS232 port -
equipment status, output voltage on each channel and redundancy status.
By being able to monitor the output voltage, the user can detect cabling
issues that cause an impedance change and replace cabling before it
completely fails. Reporting is also easily accessible via the front panel
display.
SNMP is also available for remote monitoring and control. Appendix D
details the capability and features.
Nominal power is global AC power but a DC power option can be ordered
that acts as the back-up power supply. Nominally 24 Vdc, this port is used
for power when AC power fails. Switching between power sources is
automatic and there is no transient power outage at the equipment level.
The primary power supply is followed by low noise linear converter
assemblies.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
5 of 39
www.novuspower.com
2.0 Controls and Indicators – Front Panel
This section describes the functionality of the front panel controls and
indicators. Two buttons above the status LEDs provide navigation through
the menus.
In general, the NEXT button advances through the menus to the next
screen, while the SELECT button chooses between the available values
on a menu.
Menus that allow selectable adjustments are the Input Threshold, Alert
Threshold, and the Attenuation setting. To adjust these values from the
front panel, hold down both buttons for two seconds, until the value begins
to flash. To leave the menu with the new value, hold down both buttons
until the value is solid.
Screen Saver: After 1 hour, the OLED display will turn off, unless
activated by a fault condition, or by a user input, such as pressing the
NEXT or SELECT buttons.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
6 of 39
www.novuspower.com
2.1 Channel Status
The channel status can be determined by reading the actual RMS value
on the output of each stage. This is compared to a threshold limit that is
set by the user as a percentage variation from a saved value. The default
variation value is set at ±25% percent from the current state of the
amplifier and is user-programmable in 5% increments from ±10% to ±60%.
The range of acceptable channel amplitude can be narrowed around a
connected balanced line, so that a channel status below the alert
threshold indicates a shorted line, while a channel status above the alert
threshold window indicates a potential disconnected cable.
The threshold value at which a channel alert is triggered can be
programmed on the alert threshold screen, or programmed via the RS232
port. Once set, the unit would continue to monitor each channel and a
deviation beyond the set limits would be reported as a failure on the front
panel and via RS232.
The channel status feature can quickly detect a cabling failure. Any
change in the load impedance will change the output voltage with respect
to the divider formed by the output impedance of the amplifier and the load
impedance. Failing cables and connectors can be detected early.
The current threshold limits are displayed in addition to the actual
measured value. These values reflect the percentage threshold defined in
the alert threshold settings. If the output value is too low to give a valid
reading, the display will read “LOW.”
The status is displayed on the front panel and is accessible over the
RS232 serial bus via DB9. Channel statuses can be cycled into view or
can remain on a single channel. This feature can be accessed via the
NEXT button, by advancing to the channel status screen. To cycle
through channels in sequence, press the SELECT button.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
7 of 39
www.novuspower.com
2.2 Status LEDs
There are three status LEDs which provide a quick indication of valid unit
operation.
Alert LED: The alert LED will illuminate flashing red to indicate an input
failure or a power supply failure. The alert LED will not flash red if any
valid input signal is present.
Oven LED (OCXO option only): The oven LED will illuminate red to
indicate an oven failure.
Fault LED: The fault LED will illuminate flashing red to indicate a channel
fault, when any single channel is outside the user-defined threshold.
2.3 Input Status
The status of either input (A or B) can be monitored from the input status
screen. The input values a displayed in Vrms. When an input is selected,
an arrow appears next to the value indicating that the source on that input
is relayed to the output channels.
If no input is present, or the input selection priority does not have an input
value which is above the input threshold, the alert LED flashes red, and
the screen indicates “Connect Source.” The error is also noted in the fifth
field of the $GPNVS string, with the following values:
0 = At least one valid input is available and is relayed to the channel
outputs.
1 = Input A is selected and is below the input threshold.
2 = Input B is selected and is below the input threshold.
For details on the status strings, see section 5.0 Programmer’s Guide.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
8 of 39
www.novuspower.com
2.4 Power Supply Status
The power supply status screen provides DC voltage values of the two
available power supply sources. The 90-250V AC input is internally
connected to an internal 24V AC-DC convertor which powers the internal
supplies with 24V. This is diode-connected with the external 24V DC
input, which can be used in addition to, or in place of, the AC input.
The values of both DC supplies are measured internally to validate
connections. The measured values of the AC/DC convertor and the DC
input are reported in the third and fourth fields of the second $GPNVS
status string.
For details on the status strings, see section 5.0 Programmer’s Guide.
In addition to direct value measurements, each redundant system has a
power supply status byte which is reported in the third $GPNVS status
string, in the seventh and eighth fields respectively.
Any measurement of the power supply which results in an alert condition
will be reported in the power supply status byte.
0x80 = External AC not connected.
0x40 = External DC not connected.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
9 of 39
www.novuspower.com
Redundant power supplies operate on either the AC input or DC input,
and function independently. All functionality and reporting for an individual
power supply and amplifier is independent of its redundant copy.
2.6 Alert Threshold
The alert threshold screen allows the user to adjust the tolerance from the
reference voltage which, if exceeded in either direction, the output
channels will report a fault status. The default threshold value is set at
±25% percent from the current state of the amplifier, and is user-
programmable in 5% increments, from ±10% to ±60%.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
10 of 39
www.novuspower.com
Each channel has a reference voltage which can be set, all at once, by
latching the channel’s current value in the latch channel average screen.
Each channel’s reference voltage can be set individually by writing the
value serially with the $SET command. After saving the current
configuration on a channel, any subsequent deviation on that channel
which exceeds the alert threshold percentage will trigger an alert.
Steps to ensure correct alert configuration:
1. Connect source input(s) to channel A and/or B.
2. Connect distribution cabling to channels 1 through 16.
3. Set alert threshold to desired range.
4. Save current channel voltages with the latch channel values
screen.
5. Save current settings on the save configuration screen.
Note: Alert threshold can be different for Input A and Input B, allowing for
variation in the input source. To accommodate both inputs, set alert
threshold for Input A and Input B.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
11 of 39
www.novuspower.com
The alert threshold can be optimized so that a channel short or an
impedance change will cause an alert.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
12 of 39
www.novuspower.com
Example:
The output of channel 1 is connected to a high impedance input and
reports 1.25Vrms at the output. The output of channel 2 is connected to a
50 Ohm terminated input, and reports 0.90Vrms at the output.
Input A is connected to a ~0.95V 10MHz source.
Alert threshold for input A is set to +/-20%.
The current state is saved in the save configuration screen.
The Channel 1 alert will report when:
-The Channel 1 output is higher than 1.50Vrms
-The Channel 1 output is lower than 1.00Vrms
-
The Channel 2 Alert will report when:
-The Channel 2 output is higher than 1.08Vrms
-The Channel 2 output is lower than 0.72Vrms
Pressing the SELECT button toggles the view between the A and B input
alert threshold settings.
To adjust the alert threshold from the front panel, hold the NEXT and
SELECT buttons down simultaneously for two seconds. The percentage
value will begin flashing. To increase the value, press the SELECT
button. To decrease the value, press the NEXT button.
When the desired value is reached, press the NEXT and SELECT button
simultaneously to leave the settings mode.
The alert threshold settings can be modified via the RS232 serial port with
the $FLTTHRA and $FLTTHRB commands.
For details on the alert threshold, see section 5.0 Programmer’s Guide.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
13 of 39
www.novuspower.com
2.7 Input Threshold
The input threshold screen allows the user to monitor and set the
threshold at which the input is regarded as invalid or faulted.
The input threshold value is the absolute voltage (user programmable
between 0.1Vrms and 1Vrms) below which the input fault will occur, and
the auto input select will consider the signal invalid. The default minimum
value is set to 0.3Vrms.
Pressing the SELECT button toggles the view between the A and B input
threshold settings.
To adjust the input threshold from the front panel, hold the NEXT and
SELECT buttons down simultaneously for two seconds. The percentage
value will begin flashing. To increase the value, press the SELECT
button. To decrease the value, press the NEXT button.
When the desired value is reached, press the NEXT and SELECT button
simultaneously to leave the settings mode.
The input threshold settings can be modified via the RS232 serial port with
the $INPTHRA and $ INPTHRB commands.
For details on the input threshold, see section 5.0 Programmer’s Guide.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
14 of 39
www.novuspower.com
2.8 Input Select
The input select screen allows the user to monitor and select the input priority
for inputs A and B. Pressing the SELECT button with advance through the
following settings:
-Input A Select
-Input B Select
-Auto Select (Priority A)
-Auto Select (Priority B)
Example: Input select is set to Auto(A). Input A threshold is set to 0.5Vrms.
Input B threshold is set to 0.5Vrms.
Input A
Input B
Selection
0.90V
0.4V
A
0.90V
No Connection
A
No Connection
0.6V
B
0.4V
0.6V
B
No Connection
No Connection
Last Selected
The default setting is Auto (A). Input A select and Input B select will select
only A or B respectively.
Input select priority can also be programmed via the RS232 port with the
$INP command:
-$INP=0: Input A Select
-$INP=1: Input B Select
-$INP=2: Auto Select (Priority A)
-$INP=3: Auto Select (Priority B)
For details on the input priority programming, see section 5.0
Programmer’s Guide.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
15 of 39
www.novuspower.com
2.9 Latch Channel Values
The latch channel values screen allows the user to save the current
channel output values for use as the reference value for alert settings.
A channel alert is triggered when a channel output voltage exceeds or falls
below a percentage of the reference value. This reference value is
1.10Vrms as a default, but can be set by the user.
There are two ways to set the reference voltage. The RS232 serial port
allows for setting an individual channel’s reference voltage with the $SET
command. The user can also use the latch channel values to take a
snapshot of all current outputs, and use these as the reference values.
All channel reference values are with respect to the active Input (A or B).
If Input A and input B are both present, this allows for setting references
on both inputs to accommodate variation in amplitude between the two
inputs.
2.9 Save Configuration
The save configuration screen allows the user to save the current settings
for alert threshold, input threshold, attenuation, input select, reference
voltage and any other settings that have been modified via the RS232
port.
To save the current settings, press the SELECT button twice.
The save configuration action is equivalent to the $SAVEFL command on
the serial port.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
16 of 39
www.novuspower.com
2.10 Fault Status
The fault status screen allows a quick overview of any channel faults from
the front panel. The total fault count is listed, as well as a visual flashing
indication of any channels that are beyond the threshold values.
Press SELECT to advance to the system fault screen.
The system fault screen indicates any failures in the primary system or the
redundant backup system. All internal power supplies are monitored
(24V, +8V, -8V, 5V) on both the primary and backup systems. A failure on
one of these supplies will be indicated with a “PS FAIL” fail warning for
either system. A communication failure would be indicated by a “Com
FAIL” indicator. Either of these fault statuses will result in the change of
the primary to the backup system. The individual statuses of the internal
power supplies are also available via the RS232 serial port.
The presence of a valid DC input voltage is indicated on this screen, as
well as a valid AC power input. If either of these supplies are not present,
a “FL” indication will be shown next to the appropriate input.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
17 of 39
www.novuspower.com
2.11 Power Switch
The rear panel power switch controls AC power input to the unit. If the
optional DC input is provided with 24V, or a valid DC supply, the unit will
operate. If the unit is powered with the DC Option, the rear panel switch
does not remove DC power.
The AC and DC input option provides a redundant and automatic backup
source in the case of failure of either input.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
18 of 39
www.novuspower.com
2.12 RS232 DB9 Port
The front panel RS232 port allows convenient setup of the unit in addition
to the rear panel RS232 which may be connected to a more permanent
instrumentation setup.
The front panel RS232 port will respond to the same commands as the
rear panel, and any changes made will be reported on both serial ports.
To receive the status strings on the front panel port, the command
$ACTFRP=1 is input.
See complete list of functionality in the Programmer’s Guide Section 5.0.
The default Baudrate for the front panel serial port is 115200 baud, 8 bits,
1 stop bit, no parity.
RS232 Serial Port: Front Panel Pin Connections
Pin
Function
I/O
1
NC
2
Command Port TX
O
3
Command Port RX
I
4
NC
5
GND
GND
6
NC
7
NC
8
NC
9
NC
RS232 programming functionality is described in detail in Section 5.0.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
19 of 39
www.novuspower.com
3.0 Rear Panel
3.1 Channel Outputs - BNC
There are ten outputs across the left hand side of the rear panel. They are
labeled 1 through 10. Nominally the outputs are 50 Ohm impedance.
3.2 Status LEDs
There is an LED to the right of each BNC. A continuous green indication is
for normal operation. Flashing green channel indicates that the channel
has been detected to be in an out-of-tolerance state that can be caused by
the RMS value being above or below the specified tolerance.

USERS MANUAL
ND2310D
REVISION
A
DATE
1/12/20
Page #:
20 of 39
www.novuspower.com
3.3 Signal Input A/B
Signal input. Standard impedance is 50 ohms. Maximum signal input is
1.5 Vrms. By default, Auto(A) priority is selected, meaning Signal A is
considered primary, and B is used if A is detected as being out of
tolerance. The user can change the Signal Input priority via the Front
Panel Input Select screen, or via RS232, based on a need for, or the
presence of, a particular source.
3.4 24VDC Input
The DC input connector is a 3 pin Amphenol circular connector, P/N
DL3102A10SL-3P. The mating connector is available as P/N
DL3106A10SL-3S.
The default DC input voltage is 24Vdc. Custom voltage ranges can be
provided from -60Vdc to +60Vdc.
Pin A goes to the most negative voltage of the DC source. For a 24V
source input this would be the ground or return output from the DC source.
Pin B goes to the most positive DC voltage of the DC source. For a 24V
source input this would be the positive output from the DC source.
Pin C goes to the Earth ground of the DC source.