Novatel 600 User Information - page 2
of the antenna itself. Screw the bottom of the adapter onto a range pole, tribrach, tripod or
other equivalent mount. Attach coaxial cable from the antenna connector to the antenna
port on your receiver.
Caution: Over tightening the metal adaptor into the plastic baseplate will damage
the baseplate.
The maximum directivity at 90
°
elevation angle (antenna boresight) is typically 8 to 10
Decibels (dB). This is on average 5 dB more than a typical patch antenna. In addition
the pattern roll-off from boresight to antenna horizon (0
°
elevation angle) is in the order
of 15 to 20 dB. This roll-off compares well to a patch antenna roll-off mounted on a
large choke ring ground plane. This antenna has a major advantage above the choke ring
ground plane antenna – it is lighter by several pounds and much smaller.
There is no difference in phase center location between the L1 and L2 channels. This is a
very important feature of the antenna. Base stations with very long GPS baselines
normally use a choke ring type antenna that has a physical vertical offset (z-axis) between
the L1 and L2 channels in the order of 20 mm. The vertical phase center offset then has
to be corrected because the choke ring antenna sees a different GPS satellite
constellation. The GPS 600 then is very suitable for long baseline applications such as
tectonic plate movement monitoring or telescope alignment. The phase center in the x
and y-axis is located in the center of the antenna for both channels due to its inherent
symmetry and co-centric type design.
– ELECTRICAL TECHNICAL SPECIFICATIONS –
3 dB pass band:
L1:
1575
±
8 MHz
L2:
1228
±
10 MHz
Out-of-band rejection:
f
c
± 30 MHz:
25 (typical)
f
c
± 50 MHz:
30 (typical)
f
c
± 100 MHz:
50 (typical)
Antenna elev. pattern:
θ
= 90
°
:
7.5 dBic (L1 min.), 6.5 dBic (L2 min.)
(90
°
= zenith)
20
°
≤ θ
°
:
-1.5 dBic (L1 min.), -1.5 dBic (L2 min.)
5
°
≤ θ
°
:
-5.5 dBic (L1 min.), -3.5 dBic (L2 min.)
0
°
≤ θ
°
:
-7.0 dBic (L1 min.), -5.0 dBic (L2 min.)
LNA gain:
L1: 27 dB (typical)
L2: 27 dB (typical)
Polarization:
Right-hand
circular
Noise figure:
2
.5 dB (typical)
L1-L2 differential
propagation delay:
1.5 nsec (typical)
Axial ratio:
0
°
≤
θ ≤
90
°
:
5 dB max. (L1), 3 dB max. (L2)
(90
°
= zenith)
Nominal impedance:
50
Ω
VSWR:
≤ 2.0:1
Power requirements:
≤
50 mA @ +4.5 to +18 VDC,
40
mA (typical) @ 5 VDC
– MECHANICAL & ENVIRONMENTAL SPECIFICATIONS –
Finish:
Weatherable polymer
Weight:
≈
730 g (25.75 oz)
Altitude:
3000 m (9842.5
ft
)
Temperature: -55
°
C to +85
°
C (-67
°
F to +185
°
F)
– MECHANICAL DRAWINGS –
71&)(0$/(
&211(&725
3+$6(&(17(5/$%(/
81&$'$3725
,OOXVWUDWLRQRQO\PD\FKDQJH
&211(&725
&29(5
3+$6(&(17(5
7$3(0($685(
7,3+2/'(5
$OOGLPHQVLRQVDUHLQPLOOLPHWHUVPP
ZKHUHLQFK PP
1DPHSODWH
$'$37(5
%RWWRP9LHZ
7RS9LHZ
6LGH9LHZ
H/W Rev: A
P/N: xxxxxxxx
MADE IN CANADA
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
XXXXXXXXXXX
&/