LE1G
Line Extender – for 1 GHz HFC Applications – with 1 or 2 RF ports
LE1G Datasheet
产品简介
The PBN LE1G line extender is designed to provide a very cost-effective, superior performance solution for the end-of-line forward-path HFC application.
The LE1G is an economical method for minimizing in-field HFC distribution nodes and allows for longer distances between the customer and node. This is an excellent system solution when subscribers are spread across large distances. It is also suitable for small systems, for boosting the RF level.
The superior frequency response, of up to 1000 MHz, allows crystalclear reception of analog and digital cable television channels in NTSC, PAL, DVB-C, DVB-T, and HD (High Definition) television standards.
The LE1G is IP67 rated and suitable for outdoor and indoor applications. The unit is available with one RF output port or with two amplified RF output ports.
The LE1G employs advanced scalable technology to provide a costeffective and flexible solution for expanding network architectures.
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| RF Performance | |||
| RF bandwidth | Return path (1) | Forward path (2) | |
| Option [Y] = 3045 | 5 MHz to 30 MHz | 45 MHz to 1000 MHz | |
| Option [Y] = 4254 | 5 MHz to 42 MHz | 54 MHz to 1003 MHz | |
| Option [Y] = 5570 | 5 MHz to 55 MHz | 70 MHz to 1003 MHz | |
| Option [Y] = 6585 | 5 MHz to 65 MHz | 85 MHz to 1003 MHz | |
| Amplifier type | GaN | GaAs | |
| 1 x RF port model | 2 x RF port model | ||
| RF gain | Forward path | ≥35 dB | ≥32 dB |
| Return path | ≥24 dB | ≥22 dB | |
| RF flatness | ± 0.75 dB | ± 0.75 dB | |
| RF impedance | 75 Ω | 75 Ω | |
| RF return loss | ≥ 16 dB @ 5 MHz to 1000 MHz | ≥ 16 dB @ 5 MHz to 1000 MHz | |
| Hum modulation @ 12 A | 70 dB | 70 dB | |
| Hum modulation @ 15 A | 65 dB | 65 dB | |
| RF input test point | -20 dB ± 1 dB | -20 dB ± 1 dB | |
| RF output test point | -20 dB ± 1 dB | -20 dB ± 1 dB | |
| Link Performance | ||
| Cross modulation | > 65 dB | > 65 dB |
| Noise figure | < 10 dB | < 10 dB |
| CNR | > 62 dB | > 62 dB |
| CSO | < -70 dBc | < -70 dBc (77ch NTSC, CW channels + Digital) |
| CTB | < -75 dBc | < -75 dBc (77ch NTSC, CW channels + Digital) |
| Group Delay Characteristics | ||
| Forward path (2) (chrominance to luminance delay) | ||
| Frequency (MHz) | Delay (ns) | |
| 112.25 ~ 116.68 | 4 | |
| 119.25 ~ 123.68 | 3 | |
| 126.25 ~ 130.68 | 3 | |
| Return path (1) (typical group delay in 1.5 MHz bandwidth for 65/85 MHz frequency split) | ||
| Frequency (MHz) | Delay (ns) | |
| 5.0 ~ 6.5 | 60 | |
| 6.5 ~ 8.0 | 22 | |
| 8.0 ~ 9.5 | 12 | |
| 60.5 ~ 62.0 | 10 | |
| 62.0 ~ 63.5 | 13 | |
| 63.5 ~ 65.0 | 16 | |
| General | ||
| Power supply | Option [Z] = 60 | 30 Vac to 70 Vac |
| Option [Z] = 90 | 50 Vac to 110 Vac | |
| Option [Z] = 220 | 90 Vac to 264 Vac | |
| Operating temperature | -40 ℃ to +65 ℃ ambient | |
| Dimensions (HxWxD) | 157 x 254 x 222 mm | |
| Shipping size (HxWxD) | 190 x 310 x 240 mm | |
| Net weight | 4.0 kg | |
| Shipping weight | 4.6 kg | |
Notes
(1) For units ordered with optional return path RF. See Order Details.
(2) Measured with 78 NTSC channels and -6 dBc 320 MHz digital channels from 550 MHz to 1000 MHz, 48 dBmV at 1003 MHz and 14 dB slope. Other test conditions’ results such as 42 CENELEC channels, 64 PAL-D channels are available on request.
| LE1G-IEQ-[dB] |
Forward inverse plug-in equalizer |
| LE1G-DPL-3045 | 5~30 / 45~1000 MHz frequency-split diplexer pad *** |
| LE1G-DPL-4254 | 5~42 / 54~1003 MHz frequency-split diplexer pad *** |
| LE1G-DPL-5570 | 5~55 / 70~1003 MHz frequency-split diplexer pad *** |
| LE1G-DPL-6585 | 5~65 / 85~1003 MHz frequency-split diplexer pad *** |
*** Diplexer pads are supplied with each LE1G unit, as specified at time of purchase. Separate diplexer pads can be ordered to reconfigure the unit if requirements change.
| LE1G-[W]-[X]-[Y]-[Z] | Line extender for 1 GHz HFC applications |
| Options: | |
| W | |
| 1P | One RF output port |
| 2P | Two RF output ports |
| X | |
| 0 | No return path |
| 1 | With return path |
| Y | |
| 0 | No frequency split |
| 3045 | 5~30 / 45~1000 MHz frequency split |
| 4254 | 5~42 / 54~1003 MHz frequency split |
| 5570 | 5~55 / 70~1003 MHz frequency split |
| 6585 | 5~65 / 85~1003 MHz frequency split * |
| Z | |
| 60 | 30~70 Vac coax line power input ** |
| 90 | 50~110 Vac coax line power input |
| 220 | 90~264 Vac line power input |
* 65/85 MHz frequency-split option is the default for orders that have not been specified otherwise.
** 30~95 Vac power input option is the default for orders that have not been specified otherwise.
