HP 58516A User manual

HEWLETT'
PACKARD
HP
58516A
GPS
L1
DISTRIBUTION
AMPLIFIER
INFORMATION
NOTE
Figure
1.
Hewlett-Packard
58516A
Distribu-
tion Amplifier
1.
INTRODUCTION
1.1.
The HP 58516A GPS L1 Distribution
Amplifier is one component of a complete line
of GPS accessories for your GPS antenna sys-
tem available from Hewlett-Packard. These
accessories are designed to deliver precise GPS
signals over a wide temperature range and
in
harsh environmental conditions.
1.2.
The
distribution amplifier is required
if
you wish to distribute the signal from a single
antenna to asmany asfour GPSreceivers.
2.
DESCRIPTION
2.1.
The HP 58516A consists of a broadband,
unity
gain
amplifier and a 1:4 signal splitter.
Designed for use with GPS antennas, the
~u,lt
features
s
high degree of isolation
to
eliminate
feedback and interaction between any GPS
systems connected to it.
ternal power option allows the use of a power
source separate from any of the connected
GPS receivers. A unit with Option 05Q does
not receivepower through Port 1.
3.
USEWITH HP AND NON-HP SYSTEMS
3.1.
Although designed for use with HP GPS
frequency and time receivers, the HP 58516A
can be used with other GPS receiver and
an-
tenna systems.
3.2.
The HP 58516A operates over a voltage
range of +4.5 Vdc to +30 Vdc. Voltage is sup-
plied via the connecting cable (the center con-
ductor is positive with respect to the shield) to
Port
1
of a standard unit, or through an exter-
nal dc power input on a unit with Option 05Q.
Caution:
Power to the HP 58516A will
be passed
to
the rest of the antenna sys-
tem. For example,
if
a +30 Vdc supply is
used to power the HP 58516A, the
+30 Vdc
will
be passed through to the
antenna. When using the HP58516A
with an HP 58504A GPS antenna, the
maximum voltage should be no greater
than +5.5Vdc.
4.
INSIF
..
;'HIS INFORMATION NOTE
4.1.
This note provides information on the
followingtopics:
Distribution amplifier description.
Installation, including mounting distri-
bution amplifiers.
He,
ammended maintenance.
Waml;y.
List (ifspecifications.
2.2.
Power to the standard
unit
is supplied by
the GPS timing receiver 'connected to Port 1.
An
optional external dc power input (Option
05Q) is available, in which power is supplied
instead through an SMC connector. This ex-

5. CONSIDERATIONS FOR LONG CABLE
RUNS
5.1.
Due to process variations in the fabrica-
tion of the HP58516A, the gain through the
device can vary fi-om
+3
dB
to -3
dB.
Assume
the worst case loss of the HP58516A when
determining if line amplifiers are necessary
in
your GPS antenna system.
5.2.
The assumed worst case loss through the
HP58516Ais equal to:
18meters (60
R)
of cablelength when
using
LMR
400 cable
8 meters (25
ft)
of cable lengthwhen
us-
ing
RG-213cable.
5.3.
Use this procedure to determine
if
line
amplifiers arerequired:
1. First, calculate the distance fi-om the an-
te~ato themost distant receiver.
2. Add the assumed worst case loss through
the HP 58516A
in
terms of cablelength.
3. Compare theresult to the requirements
for line amplifiers below. Ifline amplifi-
ers are required, they should be added as
closeto the GPS antenna aspossible
(within
10meters133feet).
6.
REQUIREMENTS FOR LINE AMPLIFIERS
6.1.
This section provides information that
will help you determine if line amplifiers are
required for your GPS antenna system instal-
lation.
For LMR
400
cable:
6.2.
If the estimated cable length between the
antenna and the most distant GPS receiver is
(include the assumed worst case loss through
theHP 58516A):
Less than 115meters(377feet),no line
amplifierisnecessary.
More than 115meters (377feet)and less
than240 meters (787feet),you need
1
line amplifier.
More
than
240 meters (787feet)and less
than 360 meters (1181feet),you need
2
line amplifiers.
More than 360 meters (1181feet),contact
HPfor assistance.
For RG-213 cable:
6.3.
If the estimated cable length between the
antenna and the most distant GPS receiver is
(include the assumed worst case loss through
the HP 58516A):
Less than 53meters (174feet),no line
amplifier
is
necessary.
More than 53meters (174feet)and less
than 105meters (345feet),you need
1
line amplifier.
More than 105meters (345feet)and less
than
158meters (518feet), you need
2
line amplifiers.
More than 158meters (518feet),contact
HPfor assistance.
7.
INSTALLATION
7.1.
This section provides information on
mounting the distribution amplifier.
PartsRequired
7.2.
Having the items listed below on hand
will help savetime duringinstallation.
Customer Supplied:
-
If the distribution amplifier
will
be
mounted
to
a surface,
a
mounting
bracket isneeded. Option AUB pro-
vides
a
mounting bracket and 4
screws. Otherwise, order
(1)
HPp/n
58516-00002 (mountingbracket)
AND
(4)p/n 0515-0372 (screws).
-
Use fastenersno larger than
6.35 mm (0.25
in)
diameterwith the
mounting bracket.
Tools Required
TORX T-10 screwdriver for bracket
screws.
Drill
andbits asrequired if you intend to
mount the amplifier to a surface.

Mounting DistributionAmplifier
7.3. The HP 58516A Distribution Amplifier
can be mounted in
any
indoor locationwhere it
will
not be exposed to excessive humidity or
standing water. It should be placed between
the GPS receivers and any installed line
am-
plifiers, and/or lightning arresters.
7.4. Refer
to
Figure 2. Amounting bracket
(1)
is available for the HP 58516A distribution
amplifier (2). Four screws (3) attach the
bracket to the amplifier. For ordering informa-
tion, see"Parts Required," above.
7.6. The HP 58516A DistributionAmplifier is
intended for indoor use only. It can be
mounted to anyflat surface.
Attaching the Bracketto the Amplifier
7.7. The distribution amplifier has four
"blind" screw holes located on the back of the
case (see Figure 2). Position the distribution
amplifier so that the four blind holes in the
amplifier case line up with the four mounting
holes at the edges of the mounting bracket.
Fasten the distribution amplifier to the
bracket usingthe four screws.
7.5. The bracket has four oval-shaped slots
for mounting the amplifier
to
a surface. These
slotsare 6.35 mm (0.25in)by 15.87mm (0.625
in).
Figure
2.
DistributionAmplifier and Mounting Bracket

Mountingto a Surface
face using fasteners (3)no more than 6.35 mm
(0.25in)in diameter.
7.8. The amplifier assembly can be mounted
to anyflat surface. Refer to Figure 3. 7.10. For masonry mounting, drill four holes
using the bracket as a guide with a masonry
7.9. For wood mounting,
drill
four holes using drill,The diameter of the holes
will
depend on
the bracket
as
a guide. Fasten the the diameter of the masonry anchors you use.
Select anchors that accept fasteners no more
brackevamplifier assembly (1
&
2) to the sur- than 6.35(0.25 in)
in
diameter.
Installation
Figure
3.
Surface Mountingthe DistributionAmplifier
using non-HP components or accessories in
your system.
7.11. Connect the cable from the GPS an-
tenna
to
the antenna input connector. 8.
MAINTENANCE
7.12. Connect the initial GPS receiver to the 8.1. There is no periodic maintenance re-
Tort 1" connector. The receiver at this port quired for the distribution amplifier. However,
provides dc power to the distribution amplifier it is recommended that all components of the
and the GPS antenna. Additional receivers antenna system be checked periodically and
can be connected to any of the other port con- replaced,
if
necessary, asspecified in company
nectors. procedures.
Note:
Option 05Q Only
-
An
external dc
supply must be connected to the SMC
9.
WARRANTY
connector marked
"EXT
DC" or
ANT
PWR".
The supply must be capable of 9.1. This Hewlett-Packard product is war-
providing +4.5 Vdc to +5.5 Vdc, at least ranted against defects in material and work-
60
mA,
lessthan 1%ripple.* The positive manship for a period of eighteen months from
voltage should be connected to the SMC date of shipment. During the warranty period,
Hewlett-Packard Company will, at its option,
center pin.
All
port connectors are dc- either repair or replace products which prove
blocked, and receivers can be attached to
to
be defective.
anyport connector without priority.
*
See the Caution under the section entitled,
TJse with HP and Non-HP Systems," when

NOTICE
diated energy from a lightning strike
in
the
near vicinity.
DAMAGE OF THIS
Lightning strikes are a natural occurrence.
NATURE IS NOT COVERED
BY
Any antenna system is susceptible to dam-
HEWLETT-PACKARD'S
WARRANTY.
age
from
a direct lightning strike or the ra-
10.1.
Thefollowingtable presents the specificationsfor the
HP58516A
Distribution Amplifier.
DC Power(Port 1 or optional ex-
ternal powerconnector)
Operatingvoltage
Damagelevel
Operatingcurrent
Table 1. HP 58516A
Specifications/Characteristics
Maximuminput current
FrequencyBandwidth(3 dB)
Gain (antennato output)
Noise Figure
VSWR
Isolation
Note:
Ports 2 through 4 are termi-
natedwith a 200 resistorto
simulate the load of a GPS an-
tenna.
1575.42 MHz
2
20 MHz
0 dB
+_
3 dB
Q
1575.42 MHz
<
7.0 dB (5.0 dB typical)
Q
1575.42 MHz
<
2.5:1 (1.5:1 typical)
Q
1575.42 MHz
>
40 dB
Q
1575.42 MHz (L1)
AC Input Level (antenna signal)
lmpedance
Maximumoperating
Damagelevel
+4.5 Vdc to +30 Vdc
*
>
30 Vdc, either polarity
10mA
50
a,
nominal
-25 dBm
+13 dBm
I
Operating Environment
I
0°C to +55"C
I
AC (output ports)
Impedance 50
a,
nominal
OperatingHumidity
Dimensions(includingconnectors)
I
Weight
1
0.5 kg
I
40%to 85% (non-condensing)
88.4 mm (3.5 in) W x 121mm(4.76 in) L x 30.7 mm
(1.2 in) H
Connectors
*
When using the
HP 58516A
with an
HP 58504A GPS
antenna, the maximum voltage
shouldbe no greater than
+5.5
Vdc.
Female N-Typeconnectors
I

DECLARATIONOF CONFORMITY
to
ISOflEC
Oulds
Z
md
EN
45014
Manufacturer's Name: Hewlett-PackaidCompany
Manufacturer's Address: Santa Clara Division
5301
SlevensCreek Boulevard
Santa Clara. California
95052-8059
U.
S.
A.
dedares, that the pmduct
System
Name:
Accessolles.
GPSmmeand FrequencyReceiver
Component
58-A
Antenna
58514A
BandpassFilter
ModelNumberand
58505AfB
Lightning
Arrest.
58515A 1:2
DAlSplier
Pmduct
Namc:
58509AIF
LineAmplifier
58516A 1:4
DAlSpliier
58512A 1:2
DAlSplitter
58517A 1:8
DAtSpliier
5851%
Antenna Assembly
ProductOptions: This declarationccversall optionsof the produd.
conformsto the followingProductSpeafications:
EMC: CISPR
22:
1993
I
EN
55022: 1994
ClassB
IEC
801-2: 1991
1
EN
50082-1: 1992 4
kV CD,
8
kV
AD
IEC
801-3: 1984
1
EN
50082-1: 1992 3
Vlm.
1kM80%
AM.
27-1WOMM
IEC
8014: 1988
1
EN
50082-1:1992 0.5
kVSignalLines
L
DC PowerPort
IEC
1000-3-2: 1995IEN6100&t2:1995
Harmonics.Class
A
IEC
lM10.3-3: 1994 IEN6100Qt3:1995
Flicker
SupplementaryInformatiin:
The produdmodels liedabove comply withthe requiremeritsof the
Low
Vohage Directive73R3/EECand the EMC Diredive
891336IEEC
and carriesthe
CE markingawrdingly.
Santa Clara. Caliiomia, June
19.1996
,&-&A
Eump.~
Contke
Ywr
Mm-Pxhd
Wead
Ssrula
Orrrr
or
Hnrbn-Rdord
OmbH.
bpr
ZQ/St&r&ds
Eump.
Hnnnbrper
SmBs
1JD.
D71034
Wblinpan
(FAX:
+4S-Xa1-143143)
PartNumber: 58516-90001
Printed
in
U.SA
OCTOBER
1996
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