LMDA3726 Series 1.2 GHz Compact MDU Amplifiers
Installation Manual
Page 2 of 3
SPECIFICATIONS
Parameter
Specification
Forward
Reverse
Bandwidth
(1)
54-1220 MHz
5-42 MHz
102-1220 MHz
5-85 MHz
258-1220 MHz
5-204 MHz
Technology
GaAs
Average Full Gain
37 dB
26 dB
Flatness
< ± 1 dB
Return Loss
In
-16 dB (< 1 GHz)
-14 dB
Out
-14 dB (1-1.2 GHz)
-14 dB
Test Points
Fwd In/Rev Out (bi-directional)
-20 dB
Fwd Out/Rev In (bi-directional)
-20 dB
Gain Control
Variable Attenuator
(2)
0-20 dB In/Mid
0-20 dB In/Out
Slope Control
Variable Attenuator
(2)(3)(4)
0-18 dB In/Mid
0-15 dB In/Out
Forward Distortions: 33/48 dBmV output level (72 NTSC analog channels plus 111 equivalent digital 256 QAM channels, 102-1220 MHz)
(5)(6)
CTB
On CH 78
-67 dBc
CSO
On CH 78
-70 dBc
Reverse Distortions: 52 dBmV flat output, 13 & 19 MHz carriers according to ANSI SCTE 1152019
(6)
DTO @ 7 & 25 MHz
-68 dBc
DSO @ 6 & 32 MHz
-75 dBc
Noise Figure
With 0 dB Jumpers
8 dB
6 dB
Recommended RF Input Level
9 dBmV (single)
13 dBmV (cascaded)
Group Delay
CH 2 (55, 25-58.83 MHz)
< 35 ns
CH 98 (109, 25-112.83 MHz)
< 35 ns
CH 15 (259, 25-263.08 MHz)
< 35 ns
204-203 MHz / 84-85 MHz / 42-54 MHz / 5-6 MHz
< 30 ns
Power, Environmental & Physical
Hum Modulation
-70 dBc
RFI Isolation
-100 dBc
Surge Withstand
IEEE C62.41-Cat B3, Combination Wave, 6 kV, 3 kA
Powering
24 VDC / 40-90 VAC / 100-240 VAC / HFC 40-90 VAC
Power Consumption
10 W
Enclosure
IP54 category, diecast aluminum
Operating Temperature
-30°C to +55°C (-22°F to +131°F)
Dimensions (H x W x D)
6.4”H x 6.6”W x 2.5”D (16.2H x 16.7W x 6.3D cm)
Weight
2.7 lb (1.2 kg)
NOTES:
(1)
Band selection by factory, arranged on board diplexers
(2)
Variable attenuators & equalizers. Potentiometer & digital signal attenuator combination
(3)
Onboard EQ circuit on forward path. Slope (dB) is selected via variable attenuators
(4)
Onboard EQ circuit on return path. Slope (dB) is selected via variable attenuators
(5)
0.5 dB maximum roll off at 105 & 258 MHz
(6)
NTSC or virtual level, digital levels are 6 dB lower
LMDA3726-A-81
(front angled view)
