SDI HPDA-15RMi-CW User manual

HPDA-15RMi-CW
1-100 MHz ISOLATION AMPLIFIER
OPERATING MANUAL
SPECTRADYNAMICS, INC • 1849 Cherry St. Unit 2 • Louisville, CO 80027
Phone: [phone] • Fax: [phone]
www.spectradynamics.com
SPECTRADYNAMICS, INC

HPDA-15RMi-CW 1-100 MHz Isolation Amplifier Operating Manual
Copyright © 2022 SpectraDynamics, Inc. All rights reserved.
HPDA-15RMi-CW:R02-2022-MD/FA

Contents
1.0 Introduction …………………………………………………………………….... 1
2.0 Safety and preparation for use ………………………………..……….…….. 2
2.1 Electrical ……………….…………………………………………….……. 2
2.2 Instrument ……..…………….………………………………….….…….. 3
3.0 Front panel description …….…………………………………………….…… 4
4.0 Back panel description ………………………………………………….……. 5
5.0 Installation ……………………………………………………………….…….. 6
6.0 Operation ……………………………………………………………………… 7
7.0 Troubleshooting ………………………………………………………………. 8
8.0 Specifications …………………………………………………………………. 9
9.0 Warranty and service ………………………………………………………… 10

1.0 Introduction
Page 1
The HPDA-15RMi-CW is a High Performance Distribution and Isolation Amplifier designed
to distribute state-of-the-art atomic frequency standards. This wide range model with a
frequency bandwidth of 1 to 100 MHz offers low additive phase noise, making it ideal for
use without concern in time scale applications where phase stability is of paramount
importance.
The amplifier is designed for maximum flexibility in system configuration in a 19 inch
rackmount, 1U enclosure, and may contain up to three RF signal distribution modules.
Each module takes a signal from 1 to 100 MHz and provides five buffered and isolated
outputs. All the output power levels are monitored and compared to a preset threshold If
the signal level on any output drops below this threshold, the monitor LED for the
corresponding module will turn off indicating a fault condition.
The HPDA-15RMi-CW is designed to be powered by a 100 to 240 VAC mains source
and/or by a +12 to +36 VDC power source. The DC power may be used as a main power
source for the instrument or in conjunction with the AC power as a backup power supply
in case of loss of the main AC power. The instrument is designed to automatically switch
from AC to DC supply operation using a Schottky diode network and charge storage
capacitors to avoid any glitches and ensure uninterrupted continuous operation.
HPDA-15RMi-CW Options:
Part Number Number of
Independent Inputs
Number
of Outputs
HPDA-15RMi-CW 3 15
(five per input)
HPDA-15RMi-C1W 1
10
HPDA-15RMi-C2W 2 10
(five per input)
HPDA-15RMi-C3W 1
15

2.0 Safety and Preparation for Use
Page 2
The HPDA-15RMi-CW was designed for indoor use only and is not intended for operation
outdoors or in a wet environment. The instrument may be mounted in a standard 19-inch
instrumentation rack or may be used on a laboratory bench.
Inspect the instrument and power cords for damage before first use.
2.1 Electrical Safety and Preparation for Use
Voltages capable of causing injury or death are present in this instrument. Use extreme
caution whenever the instrument cover is removed.
Line Voltage
This instrument is designed to operate with a 100 to 240 VAC, 47 to 63 Hz power source.
DC operation with +12 to + 36 VDC, + 2 Amperes is also possible.
Fuse
A 1.0 Ampere 250 V 5X10 mm slow-blow fuse is used for 100 to 240 VAC operation.
A 2.0 Ampere 250 V 5X10 mm slow-blow fuse is used for the DC power protection.
Only replace fuse with the same type and specifications.
AC Power
The instrument has a detachable three wire power cord for connection to a grounded AC
power source. The enclosure of the unit is directly connected to the outlet ground to protect
against electrical shock. Always use an outlet with a protective ground and do not disable
this safety mechanism. Detaching the AC power cord is the only option of disconnecting
the unit from the AC mains supply. Make sure you have access to the rear panel or provide
an external accessible AC disconnect means for the HPDA-15RMi-CW.
DC Power
The instrument has a RM12BRD-6PH(71) DC connector on the back panel with the
following configuration:
Pin 1 NC
Pin 2 NC
Pin 3 NC
Pin 4 +12 to +36 VDC power return
Pin 5 +12 to +36 VDC power
Pin 6 Chassis GND /Earth GND
Please note that the power return (pin 4) is NOT connected to the instrument case ground
internally, however both ground connections pin 4) and pin 6) are available at the DC
power connector and may be connected together at this point.

2.0 Safety and Preparation for Use
Page 3
Requirements for the external DC power supply
The following specifications should be used to ensure the optimum performance:
DC Supply voltage +12 to +36 VDC, 2 Amps
Line regulation +/- 0.05 % for a 10 % line change
Load regulation +/- 0.05 % for a 50 % load change
Output ripple < 5 mV peak-to-peak
Pin configuration Same as RM12BRD-6PH(71) DC connector on the back panel
Verify that the connector of the DC power supply has the correct pin configuration. Do not
apply AC voltage to the DC power connector. Failure to follow these directions may cause
injury or death to personnel, cause irreparable damage to the instrument and voids all
warranties.
2.2 Instrument Safety and Preparation for Use
The HPDA-15RMi-CW is designed to distribute RF signals with a frequency of 1 to 100
MHz. The recommended level for the RF input signal is 0 dBm to +15 dB.
Input signals must be kept below +20 dBm as greater power levels will damage the unit
and void all warranties. The HPDA-15RMi-CW RF outputs are DC isolated from the
chassis ground to prevent ground loops. These outputs are rated to a maximum of 50 V.
Absolute Maximum Ratings
Input RF Power +20 dBm Maximum
Reverse RF Power +20 dBm Maximum
Voltage at the RF Input +50 V Maximum
Voltage at the RF Output +50 V Maximum
Storage Temperature -10 to +75 ºC
Operation Environment 0 to +50 ºC

3.0 Front Panel Description
Page 4
AC Power LED
The AC Power LED turns on when AC power is applied to unit.
DC Power LED
The DC Power LED is on when DC power is applied to unit.
Monitor 1, 2, 3, LEDs
The HPDA-15RMi-CW may contain up to three RF distribution modules, each module is
monitored by the corresponding MONITOR LED labeled 1, 2 and 3.
All options of HPDA-15RMi-CW have three MONITOR LEDs installed on the front panel,
only HPDA-15RMi-CW and HPDA-15RMi-C3W come with three functioning monitor LEDs,
the other options will have a non-working monitor LED installed.
The monitor LEDs will turn on if the RF outputs of the corresponding module are greater
than the threshold of 0 dBm, for 5 MHz and 10 MHz signals, and a threshold of +5 dBm for
100 MHz signals. RF signal levels less than the threshold will trigger a fault condition and
the monitor LED will not light up. However the HPDA-15RMi-CW will still provide five
buffered copies per distribution module of the RF input signal on the back panel.

4.0 Back Panel Description
Page 5
AC Power
The HPDA-15RMi-CW is configured to operate on 100 to 240 VAC.
DC Power
This instrument may also operate on DC power from +12 to +36 VDC as the main power
supply. When the HPDA-15RMi-CW is set up to operate with both AC and DC power sources
at the same time the DC power is used as backup power in case of AC power outages.
INPUT
A RF Signal within the range of 1 MHz to 100 MHz may be connected to the SMA connector
labeled INPUT.
Part number HPDA-15RMi-CW includes three independent RF distribution modules, each SMA
input provides five buffered copies of the input signal as shown on the picture above.
Other configurations are available and may be selected by the part numbers shown below.
OUTPUTS
The number of available OUTPUTS per RF input are determined by the part number below.
Any HPDA-15RMi-CW output may be used to drive the input of another distribution amplifier.
HPDA-15RMi-C1W
HPDA-15RMi-C2W
HPDA-15RMi-C3W

5.0 Installation
Page 6
5.1 Connecting power
The HPDA-15RMi-CW may be mounted in a standard 19-inch instrument rack or may be
operated on a laboratory bench.
The instrument ships with a standard North American, European, or Chinese IEC power
cord and a RM12BPE-6S(81) DC connector.
The DC connector may be used to prepare a cable to supply the unit with a DC voltage.
The connector configuration is shown on page 2.
Once the HPDA-15RMi-CW has been placed in the desired location, locate the AC power
entry module on the rear of the enclosure, connect the AC power cord to the instrument
and plug the power cord into an appropriate AC power outlet. If a DC power cable was
prepared, it can also be connected to the instrument and supplied with the correct DC
voltage.

6.0 Operation
Page 7
Once the amplifier has been installed it is ready for operation. A power indicator LED,
located on the front panel, will light up for each of the voltages that power the instrument.
The HPDA-15RMi-CW is designed to distribute signals from 1 MHz to 100 MHz. The RF
input has a 50 ohm input impedance. Provide a signal within the mentioned frequency
range to the any of the SMA connectors available on the back panel labeled INPUT. The
monitor LEDs will turn on if the RF outputs of the corresponding module are greater than
the threshold of 0 dBm for 5 and 10 MHz signals and +5 dBm for 100 MHz signals. RF
signal levels less than the threshold will trigger a fault condition and the monitor LED will
not light up. However the HPDA-15RMi-CW will still provide five buffered copies per
distribution module of the RF input signal on the back panel.
The instrument threshold setting can be adjusted for each set of 5 channels by adjusting a
potentiometer on the board. Remove the top lid of the instrument. Each distribution
module will have a blue potentiometer on the board. Connect a signal to the distribution
amplifier input with the signal power set to the desired threshold value. Carefully adjust
this potentiometer until the corresponding led turns on and then go in the reverse direction
until the led turns off again. Replace the lid of the amplifier once the desired setting has
been reached. The threshold varies about 5 dB over the frequency range of 1 MHz to 100
MHz due to the non-linear nature of the detector.
Five buffered copies, per distribution module, of the RF signal(s) will be available on the
SMA connectors labeled OUTPUTS located on the back panel. All outputs are AC
coupled and the grounds are DC isolated to reduce the effect of ground loops. Make sure
that the amplifier ground does not float to a potential greater than 50 VDC from the
chassis ground. An output ground potential greater than 50 VDC will damage the amplifier
and could cause injury or death to personnel.

7.0 Troubleshooting
Page 8
Do not attempt to service or adjust the instrument unless another person, capable of
providing first aid or resuscitation, is present. If there are problems that cannot be
resolved by the troubleshooting steps below please contact technical support.
Technical Support
Tel: [phone] , Fax: [phone]
[email protected]m, www.spectradynamics.com
AC and/or DC Power LED does not turn on.
Disconnect the power cords and remove the top cover. Check the main AC and/or DC
power fuse and power cords. If any fuse is blown replace with same type and rating.
Please contact SDI if the any of the fuses blow again or if the event that caused the fuse to
blow is not known.
Monitor LEDs are off.
Check to see if the RF signal provided to the instrument is greater than 0 dBm.
Check to see if a signal is present at all outputs of the signal distribution module.
The Monitor LED will remain off with a power lever under 0 dBm, but will still provide
buffered copies of the RF input signal. If the instrument is providing the copies of the input
signals you may continue using the HPDA-15RMi-CW.
If the power level of the RF signal provided is greater than 0 dBm and the Monitor LEDs
remain off, the instrument will have to be returned for repair.

8.0 Specifications
Page 9
All tests done at 10 MHz and +13 dBm input unless otherwise specified.
Rackmount chassis: 1U H, 19“ W, 14” D, Weight: 4.5 kg, (10 lbs)
AC Input voltage range: 90 to 264 VAC, 22 W, 47 to 63 Hz
DC Input voltage range: 12 to 36 VDC, 13 W
Operation environment: 0 to +50 ºC, Humidity: 5% to 95% Non-condensing.
Storage Temp: -10 to +75 ºC
HPDA-15RMi-CW
HPDA-15RMi-C2W
HPDA-15RMi-C1W
HPDA-15RMi-C3W
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Bandwidth +/- 1 dB 1 - 100 - 1 - 100 - MHz
Impedance Input
Output
-
-
50
50
-
-
-
-
50
50
-
-
Ohms
Gain @ 10 MHz 0 0.2 0.5 0 0.2 0.5 dB
Output level
@ 10 MHz
1 dB compression 17 18 - 17 18 - dBm
Return loss
@ 10 MHz
Input (S11)
Output (S22)
-
-
-35
-35
-30
-30
-
-
-35
-35
-30
-30
dB
Distortion
@ 10 MHz
+13 dBm
+17 dBm
-
-
-48
-42
-45
-40
-
-
-45
-42
-40
-40
dBc
Isolation
@ 10 MHz
Output to output
Output to input
130
140
140
145
-
-
130
140
140
145
-
-
dB
Phase noise
At 10 MHz
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
-
-
-
-
-
-155
-165
-167
-170
-171
-150
-160
-166
-170
-170
-
-
-
-
-
-150
-160
-166
-169
-169
-147
-157
-165
-167
-167
dBc/Hz
Gain @ 100 MHz -1 -0.5 0.5 -1 -0.5 0.5 dB
Output level
@ 100 MHz
1 dB compression 16 17 - 16 17 - dBm
Return loss
@ 100 MHz
Input (S11)
Output (S22)
-
-
-13
-25
-10
-20
-
-
-13
-25
-10
-20
dB
Distortion
@ 100 MHz
+10 dBm
+13 dBm
-
-
-33
-30
-31
-28
-
-
-33
-30
-31
-28
dBc
Isolation
@ 100 MHz
Output to output
Output to input
80
80
90
90
-
-
80
80
90
90
-
-
dB
Phase noise
@ 100 MHz
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
-
-
-
-
-
-136
-146
-154
-160
-161
-133
-143
-152
-158
-159
-
-
-
-
-
-136
-146
-154
-159
-160
-133
-143
-151
-156
-157
dBc/Hz
Allan
Deviation
Averaging Time (s)
1
10
100
1000
10000
-
-
-
-
-
4 x 10-14
5 x 10-15
2 x 10-15
6 x 10-16
4 x 10-16
5 x 10-14
7 x 10-15
3 x 10-15
1 x 10-15
5 x 10-16
-
-
-
-
-
4 x 10-14
5 x 10-15
2 x 10-15
6 x 10-16
4 x 10-16
5 x 10-14
7 x 10-15
3 x 10-15
1 x 10-15
5 x 10-16

Page 10
Warranty
The HPDA-15RMi-CW is warranted to be free of defects under normal operating
conditions, as specified, for one year from date of original shipment from
SpectraDynamics, Inc. (SDI). SDI’s obligation and liability under this warranty is
expressly limited to repairing or replacing, at SDI’s option, any product not meeting the
said specifications. This warranty shall be in effect for one (1) year from the date a HPDA-
15RMi-CW is sold by SDI. SDI makes no other warranty, express or implied, and makes
no warranty of the fitness for any particular purpose. SDI’s obligation under this warranty
shall not include any transportation charges or costs of installation or any liability for direct,
indirect, or consequential damages or delay. Any improper use, operation beyond
capacity, substitution of parts not approved by SDI, or any alteration or repair by others in
such manner as in SDI’s reasonable judgement affects the product materially and
adversely shall void this warranty. No employee or representative of SDI is authorized to
change this warranty in any way or grant any other warranty.
Service
Do not attempt to service or adjust the instrument unless another person, capable of
providing first aid or resuscitation, is present. Please remember that any alteration or repair
may void the warranty. Contact SDI with any questions or to request an RMA if a repair is
needed.
SpectraDynamics, Inc.
1849 Cherry Street Unit 2.
Louisville, CO 80027
USA
Tel: [phone]
Fax: [phone]
[email protected]
www.spectradynamics.com
9.0 Warranty and Service

Page 11
EC Declaration of Conformity
All options of FS-100RM-10 Low Noise Frequency Multiplier has been designed and
manufactured in accordance with the below referenced Standards and complies with all
essential requirements of the Directives listed below.
Directives:
2014/35/EU of the European Parliament and of the Council of 26 February 2014 on
the harmonization of the laws of the Member States relating to the making available on the
market of electrical equipment designed for use within certain voltage limits.
2014/30/EU The Electromagnetic Compatibility Directive and its amending directives.
2011/65/EU of the European Parliament and of the Council of 8 June 2011 on the
restriction of the use of certain hazardous substances in electrical and electronic
equipment.
Standards:
EN 55011:2009+A1:2010, Product family standard for Industrial, Scientific and
Medical (ISM) equipment.
EN 61010-1:2010+A1:2019, Safety Requirements for Electrical Equipment for
Measurement, Control and Laboratory Use – Part 1: General Requirements
EN 61326-1:2013 Electrical Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use – Part 1: General Requirements