Lek2110 Training

8/3/2019 Lek2110 Training

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LEK-2110 Line Extender

Trans Electric Co.Ltd


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Order Information

LEK 2110 /37 42/54

Line

Extender

K=KS

2=2 IC

1111=1 output

37=Gain

Band split

10=1002MHz


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Product Feature (Housing)

1.5GHz Platform,15A Power passing capacity.

Die-cast housing with fin design and with

painted coating provide good environmental

protection and heat dissipating.RFI gasket with silicon rubber and mesh alloy,

provide good RFI shielding.

Water-proof gasket and con-cav mechanical

design provide the good water-proof.Data log sticker for normal operation.


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Feature ( Housing)

1.Input Port( Power/RF )

2.Socket for amplifier module

3.Pin fixation screws

4.Data Log

5.Pin length marker

(37mm~44mm)6.DIMENSION(LxWxH)

262190114 mm

5

1

2 3

4


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Feature (Housing)

1.Screws for closing the Upper and Lower

housing (spec 1/4)

2.Screws for hinge of upper and lower

housing

3.Screws for cable messenger mechanism

(distance 150mm,spec 1/4)4.Pedestral and cabinet mounting hole

(distance 37.6mm,1/420 pitches)

5.Sustain point for wall mount

2

34

5

1


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Feature (Amplifier Module)

2 stages GaAs hybrids IC. Provide higher

output level and better performance

Plug-in diplexer, it is easy to upgrade thesystem band-split without change the amplifier

Plug-in EQ,ATT,AGC, provide the stable

performance for high frequency operation.

All the test point with coupler type, stable andaccurate

AGC module (option)

Module can be 180 degree turn for convenient

installation

15A current passing,25A transient current

GAS tube surge arrestor


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Feature (Forward Path)

1.Forward input T.P.(Coupler,-20dB)

2.Forward Input ATT(AT-*M)3.Forward EQ(EQ-1G-*)

4.Inter-stage ATT(AT-*M)

5.Inter-stage EQ(EQ-1G-18WC)

6.AGC module(AGC-425)

7.AGC ATT(AT-*M)

8.Forward Output T.P.(Coupler,-20dB)

3 4 6

8

5

1

2 7


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Product (Return /Powering Path)

1.Return Input T.P.(Coupler,-20dB)

2.Return Input ATT(AT-*M)

3.Return Output ATT(AT-*M)

4.Return Output EQ(REQ-*M)

5.Return Output T.P.(Coupler,-20dB)

6.PORT1 Powering Fuse(25A)

7.PORT2 Powering Fuse(25A)

8.T.P. DC 24V

9.Working Indication (Green LED)

5

4 3 2

1

6 9 78


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SpecificationItem Forward Return unit

Frequency Range 42/54Bandsplit 54~1002MHz 5~42MHz MHz

Amplifier Technology Power Doubling Push-Pull

Flatness 0.75 0.75 dB

Gain 37 19 dB

Internal Slope 14.51.0 N/A dB

Return Loss(54~870/870~1002MHz) 16/14 16 dB

T.P. Input/output -201.0 dB

Input Level 15 21 dBmV

Output Level(54/550/750/870/1002) 37.5/45/48/50/52 40 dBmV

Channel Loading (NTSC) 79 112 6 CH

Noise Figure 12 8 dB

CSO

AGC/ without AGC

-71/-73 -64/-66 -81 dBCTBAGC/Without AGC -68/-70 -58/-61 -80 dB

X-MODAGC/without AGC -68/-70 -59/-61 -70 dB

HUM(15A) -65 -60 dB


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Functional Diagram


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Open and close the housing

1.Open the housing: Loosing the screws

sequentially as

2.Close the hosing:

a.Use bare hand to close the screws

sequentially.

b.Then use screw driver to close tightly

3.Screw spec:5/16

3 1 5

6 2 4


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LEK-2110 torque requirement


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Forward installation and operation (Normal)

1.Make sure the powering direction, plug and unplug

the powering fuse.

2.Check the +24VDC3. Choose the suitable input ATT

actual level - 15dBmV(in the whole band) =ATT value

(20 15 = 5 ie.AT-5M)

4.Choose suitable EQ

6.Choose the inter-stage ATT(default with ATT-2

Output level designed Level = ATT value

51 50 = 1 (must add 2dB, the value is AT-3M)

7. Output Level

37.5/45/48/50/52dBmV(54/550/750/870/1002MHz)

8765432AT-*M

46474849505152Outputlevel

@1002MHz

5.Set the Auto Level to medium


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1.Make the suitable length(37mm~44mm)

Make the cable connector

2.Loosing the screw on pin seizure

mechanism (counter-clock direction)

3.Tight the connector into housing

Before After4.Tightening the screw on pin seizure

mechanism (clock direction)


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Forward installation and Operation (recommended)

1.Select proper Input ATT

Input level - 15dBmV(lowest @whole band ) = ATT value

(20 15 = 5, AT-5M is the proper one)

2.Select proper input EQ

If the input is reverse tilt (Lower channel is higher than

higher, choose EQ(EQ-1G-*)

if the input is tilt( higher channel is higher than lower

channel , choose cable simulator(EQ-1G-C*)

4.Select inter-stage ATT: Factory default is AT-2M

Actual output level designed level = ATT value

49(750MHz)48(750MHz) = 1 dB but you need to add 2 db so

the AT should be AT-3M

The output level37.5/48/50(54/750/870MHz)

3.Set the Auto Level knob to proper position

Factory default is set to lowest (min gain)

please turn it at center position


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Input Level of LEK-2110

Inputlevel(dBmv)

Inputlevel

(dBmv)

Freq

(MHz)54 550 750870

Negativeslope

15dBmv

1002MHz

1002

Freq(MHz)

54 550 750

870

Positiveslope

15dBmv

54MHz

1002

Inputlevel

(dBmv)

Freq

(MHz)54 550 750870

15dBmv

Any point

1002


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Installation and Operation of AGC

1.AGC module installation(1)unplug the AC powering fuse

(2)Take out the jumper wire form AGC location

(3)Push the AGC module into AGC position

and install the AGC-ATT (AT-7M)

(4)screw the ground pad of AGC module on

face plate

(5)plug the AC Powering Fuse

2.Choose inter-stage ATTif you use AGC module, you need to change the

inter-stage ATT from 2dB to 0dB

4.Change AGC ATT to the proper output level (2LEDs of AGC module will be dimmed)

3.AUTO LEVEL knob must set to central


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Procedure for AGC Alignment

Step 5

Step 4

Step 3

Step 2

Step 1

Change AGC-ATT to

lower value

Check the LED if green is

on then output level is toohigh

Change AGC-ATT tohigher value

Check the LED if red is onthen output level is too low

Pre-installed ATT is AT-

4M

Choose proper AGC-ATTValue

Turn the knob into center

position

Auto Level adjust knob

Change to AT-0Inter-stage ATT


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Flow chart for AGC alignment

Install AGC module

Plug Poweringfuse

AGC Setup Finish

2 LEDsdimmed

Change lower value

ATT

AGC indication

AGC-ATT value AT-4M

Auto Level knob at center

Decrease inter-stageATT value by 2dB

Change higher ATT

Higher Output (Green LED) Lower Output (Red LED)

Desired output


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Operation AGC

+2dBmV

-2dBmV

10dBmV5dBmV

AT-7M

AT-8M

+2dBmV

5dBmV

-2dBmV

AT-6M

+2dBmV

5dBmV

-2dBmV

+2dBmV

-2dBmV

11dBmV5dBmV

AT-7M

+2dBmV

-2dBmV

9dBmV5dBmV

AT-7M

Input level + AGC Gain-AGC AT

10+2-7=5

Input Level + AGC Gain AGC A

11+1-7=5(AGC -1dB Gain)11+2-8=5

Input Level + AGC Gain AGC A

9+3-7=5(AGC +1dB Gain)

9+2-6=5


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Special notice for AGC module

Specification of AGC

Notice for AGC module operation

(1) The pilot channel for AGC module are CH57 and CH58

(2) Before install the AGC module, you need to remove the jumper

of AGC location(If you do not want the AGC module and jumper is removed,

please plug the jumper into original position.

dBmV2dBLevel adjustment range

CH57,58Pilot channelmA80Current consumption

V240.5Voltage

-40~+60Operating Temperature

UnitspecItem


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Return Path Alignment-- Unity Gain

1.Choose output ATT

Value=(output levelloss of passive

previous)-input level of return IC

2.Choose Return EQ

3.Using Equipment for alignment,

Injection at Return injection

point( Forward output T.P.)

injection level=input level of return IC

+return path loss+Coupler loss of T.P.+Return ATT

I.E.: IC input level 10dBmV,injection

level=10+2+20+5 = 37 dBmV.

Return injectionForward output signalorward input signal


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The loss at different location of amplifier

-2dB-2dB

-2.5dB

20dB


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Return Alignment

-25dB +15 dB +0 dB

source (TX) 37dBmV

Source (TX) 34dBmV

PAD= X

Source (TX) 37dBmV

LE

PAD=4dBPAD=0dB

PAD= X dB

2

1

2

1

+3 dB


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Configuration of accessories

AT-*M1AT-2Minter-stage ATT

AT-*M1BlankAGC-ATT

3JumperReturn Input ATT

Optional

REQ-*M1JumperReturn Output EQ

AT-*M1JumperReturn Output ATT

EQ-1G-*1JumperForward Input EQ

AT-*M1blankForward input ATT

Must install

1EQ-1G-18Output EQ

AGC-4251JumperAGC module

Pre-installed

Model noQtyModel no (pre-installed)

Item


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Plug-in Accessories

ATT: AT-0M~AT-19M,Step1dB

Forward EQ: EQ-0dB

EQ-1G-2~EQ-1G-20,Step 1dB

EQ-1G-C1~EQ-1G-C12,Step1dB

Return EQ: REQ-01M~REQ-09M,Step 1dB


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Forward EQ

1.52.94.87.17.99.512.418.720.0EQ-1G-20M

1.42.84.57.07.89.412.117.719.0EQ-1G-19M

1.22.44.56.37.08.711.416.818EQ-1G-18M

1.83.14.56.47.08.410.91617EQ-1G-17M

1.32.53.95.86.58.010.31516EQ-1G-16M1.32.53.95.66.27.59.71415EQ-1G-15M

1.52.63.95.66.27.49.413.214EQ-1G-14M

1.42.43.65.15.76.88.51213EQ-1G-13M

1.52.23.24.65.16.17.811.312EQ-1G-12M

1.72.33.24.55.05.97.410.311EQ-1G-11M

1.52.12.94.14.65.36.59.310EQ-1G-10M

1.52.12.83.84.256.18.59EQ-1G-09M

1.31.72.23.13.44.25.47.68EQ-1G-08M

1.21.72.33.23.54.04.96.77EQ-1G-07M

1.21.51.92.72.93.54.25.76EQ-1G-06M

1.11.51.92.52.73.13.74.85EQ-1G-05M

1.21.41.51.92.12.53.03.84EQ-1G-04M

111.21.51.61.92.22.53EQ-1G-03M

0.80.91.11.21.31.31.41.82EQ-1G-02M

0.330.270.250.20.180.140.100EQ-1G-0M

10028707506005504503008554

Frequency (MHz)Model No


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Cable Simulator EQ

12.010.910.339.248.547.545.722.672.06EQ-1G-C12M

11.010.09.628.828.087.175.442.592.02EQ-1G-C11M

10.09.308.818.037.446.554.932.281.75EQ-1G-C10M

9.08.397.827.006.545.814.371.921.43EQ-1G-C9M

8.07.376.846.325.835.233.981.831.40EQ-1G-C8M

7.06.596.015.505.004.453.351.501.13EQ-1G-C7M

6.05.645.244.804.413.892.891.190.85EQ-1G-C6M

5.04.384.003.643.342.972.170.870.61EQ-1G-C5M

4.03.463.162.892.672.401.770.660.45EQ-1G-C4M

3.02.402.161.971.821.631.150.290.13EQ-1G-C3M

2.01.521.281.100.930.780.510.110.03EQ-1G-C2M

10028707506005504503008554

Frequency (MHz)Model No


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Return EQ

0.440.680.862.055.206.40REQ-09M

0.270.700.871.934.835.93REQ-08M

0.170.690.821.724.235.34REQ-07M

0.070.550.651.363.654.60REQ-06M

0.130.710.811.423.284.02REQ-05M

0.200.720.801.312.843.43REQ-04M

0.080.480.550.992.062.50REQ-03M

0.050.430.480.781.461.80REQ-02M

0.270.640.670.871.191.37REQ-01M

65MHz42MHz40MHz30MHz10MHz5MHzModel no


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Level at different frequency

1

2

3

4

5

6

7

8

9

10

1112

13

14

15

16

17

54 100 200 300 400 500 600 700 800 900 100(MHz)

Slope 17.5dB Slope 14.5dB Slope 12.5dB

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