SDI PD5-RM-B User manual

SDI
SPECTRADYNAMICS, INC.
PULSE DISTRIBUTION AMPLIFIER
PD5-RM-B
OPERATING MANUAL
SPECTRADYNAMICS, INC •1849 Cherry St. Unit 2. •Louisville, CO 80027
Phone: [phone] •Fax: [phone]
www.spectradynamics.com

Copyright © SpectraDynamics, Inc. 2010
1
The PD5-RM-B is a TTL pulse distribution amplifier that accepts one input and provides
five outputs. The outputs are designed to drive low impedance loads and long 50 or
75-ohm cables. The propagation delay through the amplifier is typically 10 ns. The
channel-to-channel delay differences are less than 1 ns. The small propagation delay
characteristics and low temperature coefficient of delay are essential for the distribution
of high quality timing signals. The instrument is available in a 1.72” X 19” X 14“ rack
mountable enclosure.
Description
SDI
SPECTRADYNAMICS,INC • 1848 Cherry St Unit 2. •Louisville, CO 80027 •Phone: [phone] •Fax: [phone]
Se habla español

Copyright © SpectraDynamics, Inc. 2010
2
CAUTION!
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 may be setup to operate on 100-120 or 220-240 VAC and a line
frequency of 50 to 60 Hz. The setup voltage for this PD5-RM-B is specified on
page 4.
Fuse
A 0.50 Ampere 250V slow-blow fuse is used for 100-120 VAC operation.
A 0.25 Ampere 250V slow-blow fuse is used for 220-240 VAC operation.
Only replace fuses with the same type and specifications.
Line Cord
The instrument has a detachable, three wire power cord for connection to a grounded
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.
Service
Do not attempt to service or adjust the instrument unless another person, capable of
providing first aid or resuscitation, is present. Contact SDI for any questions or repairs.
SpectraDynamics, Inc.
1849 Cherry Street Unit 2.
Louisville, CO 80027
USA
Tel: [phone]
Fax: [phone]
[e-mail]
www.spectradynamics.com
Safety and Preparation for Use
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Copyright © SpectraDynamics, Inc. 2010
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AC Power LED
The AC POWER LED will turn on when AC power is applied to unit and the unit is
operating properly.
DC Power LED
If the PD5-RM-B was manufactured with the battery backup option the DC POWER
LED should be on when DC power is applied and the unit is operating properly. If the
PD5-RM-B is not equipped with the battery backup option, the DC POWER LED will not
be connected but will still be on the front panel.
1 PPS LED
The 1 PPS LED will flash on the falling edge of the 1 PPS output signal.
The Front Panel
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The Front Panel
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AC POWER ENTRY MODULE
The PD5-RM-B is configured to operate on:
100-120 VAC
220-240 VAC
DC POWER ENTRY MODULE
Optional Battery Backup Connector for +24 VDC Backup power source.
SMA INPUT
1 PPS input. The input signal should conform to TTL levels.
SMA OUTPUTS
Distribution amplifier outputs. The five outputs are designed to drive 50 ohm cables.
The outputs provide a 2 Volt peak-to-peak signal in a 50 ohm load.
The Back Panel
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The Back Panel
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Copyright © SpectraDynamics, Inc. 2010
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Description
If you acquired the optional battery backup module for your PD5-RM-B you will be able
to power your instrument with an external +24 VDC power source. In case of loss of the
main AC power this module will automatically power the unit. The switch from AC to DC
supply operation is affected by a Schottky diode network and charge storage capacitors
to ensure glitch free operation. The +24 VDC power source connector is located on the
back panel of the instrument. The +24 VDC ground is not connected to the instrument
case ground internally, however both ground connections are available at the DC power
connector and may be connected together at this point.
DC Voltage
The +24 VDC may be used as backup power to prevent loss of signal during power
outages. The DC power supply should be able to provide +24 VDC at 2A. For
optimum performance the following specifications should be used for the power supply.
DC Supply +24 VDC, 2 A
Line regulation +/- 0.05% for a 10% line change
Load regulation +/- 0.05% for a 50% load change
Output ripple < 5mV peak-to-peak
DC Fuse 2.0 Ampere 250V slow-blow
Fuse
A 2.0 Ampere 250V slow-blow fuse is used for +24 VDC operation.
Replace fuses with the same type and specifications
Service
Do not attempt to service or adjust the instrument unless another person, capable of
providing first aid or resuscitation, is present. Contact SDI for any questions or repairs.
Operation
To operate the unit on DC power, locate the DC power entry connector on the rear
panel and connect the power cable. When DC power is applied to the unit, the LED
located on the front panel labeled DC POWER should light up. Connection of the
+24 VDC supply is optional.
Battery Backup Module
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Copyright © SpectraDynamics, Inc. 2010
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WARNING!
DO NOT APPLY AC VOLTAGE TO THIS UNIT THROUGH THE 6 PIN CONNECTOR
ON THE REAR OF THE UNIT!
Failure to follow these directions will cause injury or death to personnel, cause
irreparable damage to the instrument and void all warranties.
WARNING!
DO NOT REVERSE THE POLARITY OF THE SUPPLY VOLTAGE!
Reversing the polarity of the power supply will cause damage to the unit and void
all warranties.
WARNING!
The chassis of the instrument is internally connected to DC ground.
The +24 VDC connector is wired as follows:
Pin 1 NC
Pin 2 NC
Pin 3 NC
Pin 4 +24 VDC GND return
Pin 5 +24 VDC power
Pin 6 Chassis GND / Earth GND
DC Connector
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DC Connector
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Copyright © SpectraDynamics, Inc. 2010
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This unit is designed to operate only with the specified voltage on page 4. For
conversion to a different voltage of operation contact SDI.
To operate the unit, locate the AC power entry module on the rear of the enclosure.
Make sure that the line voltage selection is correct and connect the power cord. Plug
the unit into an appropriate power outlet. The AC POWER LED on the front panel will
turn on. If you acquired the unit with battery backup option, you may connect the DC
connector as well and plug it into a +24 VDC, 2A outlet. Attach a cable with the
signal to be distributed to the rear panel connector labeled INPUT. The 1PPS LED
on the front panel will flash on the falling edge of each output pulse.
Although the device was designed to distribute precision one pulse per second signals,
it may be used to distribute pulses up to a frequency of 100 MHz. The propagation
delay is under 12 ns, and the channel-to-channel delay difference is less than 1 ns.
Absolute Maximum Ratings
High-Level Input Voltage 7 VDC Maximum
Low-Level Input Voltage -1.2 VDC Minimum
DC Voltage Applied at Output 7 VDC Maximum
Storage Temperature -10 to +75 ºC
Operation Environment 0 to +50 ºC
Rack Mount Chassis 1U H, 19“ W, 14” D
Operation
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Copyright © SpectraDynamics, Inc. 2010
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PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Rise time
10 - 90 %
-
3
4
ns
Fall time
10 - 90 %
-
3
4
ns
Propagation delay
50 ohm load
-
10
12
ns
Differential delay
Channel - Channel
-
200
500
ps
Impedance
input
output
-
-
50
10
-
-
Ohms
Input High Level
Input Low Level
Input signal into 50 ohm load
Input signal into 50 ohm load
2
-0.7
-
-
5
0.8
V
Output High Level
Output Low Level
50 ohm load
50 ohm load
2
-
2.4
0.4
-
0.5
V
Temperature-delay
Coefficient
0 - 50 ºC
25 - 35 ºC
-
-
3
3
5
-
ps/ºC
The rise and fall times were tested with a TTL input signal at 100 kHz.
Specifications
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Copyright © SpectraDynamics, Inc. 2010
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The PD5-RM-B 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 PD5-RM-B 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.
SDI
Warranty
SDI
SPECTRADYNAMICS,INC •1849 Cherry St. Unit 2. •Louisville, CO 80027 •Phone: [phone] •Fax: [phone]
Se habla español

PD5-RM-B:1I-5O/R02