Lindsay LHA Series Instruction Manual

LHA Series CATV Distribution Amplifiers
Model
LHA41RM-1GHz (42/54)
LHA41RM-1GHz (65/85)
LHA series CATV Distribution Amplifiers with active return are broadband indoor GaAs-PushPull, high output level
distribution amplifiers designed for RF distribution systems such as those in Cable Television Apartments, Hotels,
Hospitals and other applications where a high quality low noise figure amplifier is necessary to amplify the signals in
both the forward and return paths.
The LHA41RM fills out the selection of 1GHz Distribution Amplifiers giving you extra reach and higher output.
Designed with flat operational gain of 41 dB in the forward band and 18 dB in the reverse band. The LHA41RM has
sockets for JXP style plug-in controls, including input pad and equalizer and interstage equalizer for forward bandwidth
for balancing, and input pad plus output pad and equalizer for reverse path balancing.
The amplifiers are self powered and compatible with 117 and 230V systems
FEATURES
• GaAs-Fet Push Pull
for high output
levels with low
distortions
• Active reverse,
• JXP style plug-in
controls,
• RFI housing,
• Surge protection on
all ports,
• Diecast aluminum
housing for heat
dissipation,
• 117/ 230 Volt
powering.
Bandwidth
5-42 MHz / 54-1000 MHz
5-65 MHz / 85-1000 MHz
SPECIFICATIONS(Typical)
Typical, for T = 20degC, Zin = Zout = 75 ohms
Parameter Notes
Bandwidth
Technology
Min Full Gain
Flatness
Return Loss, IN/OUT
Test Points, IN/OUT
directional coupler
Gain Control
JXP plug-in
Slope Control
JXP plug-in
Forward Distortions:
40/50dBmV (54/1000MHz) output level, 79 NTSC channels, digital at -6dB after 550MHz
CTB
on ch78
CSO
on ch78
Xmod
on ch2
Forward Distortions:
36/46dBmV (54/1000MHz) output level, 79 NTSC channels, digital at -6dB after 550MHz
CTB
on ch78
CSO
on ch78
Xmod
on ch2
Reverse Distortions:
52dBmV flat output, 4 ch
3rd on T10
2nd on T9
Xmod on T10
Noise Figure
with 0dB jumpers
Group Delay
ch2
41-42MHz
5-6MHz
Hum Modulation
RFI Isolation
Surge Withstand
IN / OUT
Powering
Power Consumption
Temperature
Enclosure
Weight
Dimensions
* Noise Figure at 5MHz is max.8dB
Instruction Manual
LHA Series 1 GHz
Powering
90-240VAC
90-240VAC
Forward Reverse
54/85-1000 5-42/65
GaAs GaAs
41 18
+/-1 +/-1
-16 -16
-20 -20
in in / out
in / mid out
-70
-72
-73
-83
-74
-80
-68
-65
-64
6 7 (*)
<40
<35
<40
-80
-100
IEEEC62.41 Cat.A3(6kV,200A)
Mains, 90-240
15
-10 to +55
IP54 Category, Diecast Aluminium
2.8 (6.2)
21 x 17 x 9 (7-5/8 x 5-3/8 x 3)
Units
MHz
dB
"
"
"
0 to 20dB, 2dB steps
Forward : 3 to 13dB
Reverse: 2 to 10dB in 2dB
steps
dBc
"
"
dBc
"
"
"
"
"
dB
nsec
"
"
dBc
"
Vac
Watts
degC
kg (lb)
cm(in)
LHA41RM_V1 July09