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Penanaman Grounding Road

Lakukan penggalian tanah ukuran 30x30 kedalaman 50cm
Pertama coba tancapkan grounding road tersebut apakah mudah atau susah ditancapkan.
Jika agak susah,buatkan  bentuk lubang dimana grounding rod tersebut akan ditanamkan.
Tuangkan air kedalam lubang tersebut hingga penuh
Tancapkan grounding rod tersebut kedalam lubang dan tekan secara pelan pelan hingga beberapa centimeter
Angkat sedikit grounding rod tersebut ,dan biarkan air turun kebawah
Tekan kembali grounding rod tersebut hingga beberapa centimeter dari kedalaman awal
Tuangkan kembali air kedalam lubang,lalu ulangi dengan menekan grounding rod.
Sepanjang anda tidak menemukan tanah yang keras atau tanah berbatu,
air juga akan membantu anda untuk dapat menggeser lumpur atau pasir di dalam tancapan hingga grounding roda tertancap sampai habis.
Lakukan hal tersebut secara berulang hingga grounding rod tersebut tertanam sampai habis

Jika anda telah mengalami kesulitan saat penancapan grounding road,
anda juga bisa menggunakan alat bantu berupa palu untuk dapat memukul ujung atas grounding road hingga tertancap semuanya,
atau bisa juga dengan menggunakan alat bantu stang pipa,
lakukan penjepitan stang pipa ke grounding road tersebut kemudian anda berdiri di stang pipa sambil menekan grounding road kebawah.
Untuk hal tertentu anda kemungkinan anda membutuhkan penanaman grounding road yang lebih dalam dari ukuran panjang grounding road misalnya sampai kedalamna 20m,
sehingga penancapan tidak bisa dilakukan lagi.
Anda juga dapat menggunakan cara dengan mengebor tanahnya lebih dahulu.
Anda juga bisa meminta tuakng bor untuk dapat melakukan pengeboran lobang dengan diameter +/-10 cm.
Setelah kedalaman yang telah dibutuhkan dapat tercapai,anda kemudian dapat menanamkan stick road ke dalamnya.
Sebelumnya lakukan pengikatan (soldering) antara grounding rod dengan kabel road.
Dengan menggunakan pipa besi (yang bisa disambung),lakukan pendorongan grounding road ke dalam lubang.
Anda juga bisa menandai jarak dari ujung grounding road dan kabel grounding untuk dapat memastikan penanaman kabel sudah sesuai dengan kedalaman yang diinginkan.
Cara Penyambungan Grounding Road dengan Kabel Grounding
Cara menghubungkan yang paling bagus antara grounding rod dengan kabel grounding adalah dengan sistim pengelasan dengan menggunakan alat Cadweld.
Setipa penyambungan harus dengan menggunakan bubuk mesiu standar,karena pemakaian bubuk mesiu akan dapat memepengaruhi kekuatan sambungannya.
Hal ini juga dilakuan untuk proses penyambungan antara kabel grounding dengan kabel grounding dan juga untuk penyambungan antara kabel grounding ke plate terminal grounding.
Sebelum welding dilakukan,seluruh permukaan yang akan diwelding harus dibersihkan dari kotoran.
Dicuci dengan bersih,kemudian digosok dengan sikat besi.
Permukaan tidak boleh dalam keadaan basah.
Proses welding juga harus dilakukan dengan benar,alat harus ditutup dengan rapat baru dilakukan pemantikan.
Ketika proses cadweld sudah selesai dilaksanakan,hasil welding juga harus diperiksa apakah sambungan sudah kuat atau belum.
Harus dipastikan hasil penyambungan tidak ada yang terlepas.
Bila ada ditemukan sambungan yang lepas  harus dilakukan welding kembali.
Cara lain yang bisa digunakan untuk proses penyambungan grounding rod dan kabel grounding dengan cara sederhana adalah dengan menggunakan clamp.
Dan ada juga yang menggunakan solder listrrik tapi,cara ini tidak terlalu menjamin pengikatan yang sempurna.
 

Editor : Dian Sukmawati

Though Robin and Joan Rolfs owned two rare talking dolls manufactured by Thomas Edison’s phonograph company in 1890, they did not dare play the wax cylinder records tucked inside each one.

The Rolfses, longtime collectors of Edison phonographs, knew that if they turned the cranks on the dolls’ backs, the steel phonograph needle might damage or destroy the grooves of the hollow, ring-shaped cylinder. And so for years, the dolls sat side by side inside a display cabinet, bearers of a message from the dawn of sound recording that nobody could hear.

In 1890, Edison’s dolls were a flop; production lasted only six weeks. Children found them difficult to operate and more scary than cuddly. The recordings inside, which featured snippets of nursery rhymes, wore out quickly.

Yet sound historians say the cylinders were the first entertainment records ever made, and the young girls hired to recite the rhymes were the world’s first recording artists.

Year after year, the Rolfses asked experts if there might be a safe way to play the recordings. Then a government laboratory developed a method to play fragile records without touching them.

The technique relies on a microscope to create images of the grooves in exquisite detail. A computer approximates — with great accuracy — the sounds that would have been created by a needle moving through those grooves.

In 2014, the technology was made available for the first time outside the laboratory.

“The fear all along is that we don’t want to damage these records. We don’t want to put a stylus on them,” said Jerry Fabris, the curator of the Thomas Edison Historical Park in West Orange, N.J. “Now we have the technology to play them safely.”

Last month, the Historical Park posted online three never-before-heard Edison doll recordings, including the two from the Rolfses’ collection. “There are probably more out there, and we’re hoping people will now get them digitized,” Mr. Fabris said.

The technology, which is known as Irene (Image, Reconstruct, Erase Noise, Etc.), was developed by the particle physicist Carl Haber and the engineer Earl Cornell at Lawrence Berkeley. Irene extracts sound from cylinder and disk records. It can also reconstruct audio from recordings so badly damaged they were deemed unplayable.

“We are now hearing sounds from history that I did not expect to hear in my lifetime,” Mr. Fabris said.

The Rolfses said they were not sure what to expect in August when they carefully packed their two Edison doll cylinders, still attached to their motors, and drove from their home in Hortonville, Wis., to the National Document Conservation Center in Andover, Mass. The center had recently acquired Irene technology.

Cylinders carry sound in a spiral groove cut by a phonograph recording needle that vibrates up and down, creating a surface made of tiny hills and valleys. In the Irene set-up, a microscope perched above the shaft takes thousands of high-resolution images of small sections of the grooves.

Stitched together, the images provide a topographic map of the cylinder’s surface, charting changes in depth as small as one five-hundredth the thickness of a human hair. Pitch, volume and timbre are all encoded in the hills and valleys and the speed at which the record is played.

At the conservation center, the preservation specialist Mason Vander Lugt attached one of the cylinders to the end of a rotating shaft. Huddled around a computer screen, the Rolfses first saw the wiggly waveform generated by Irene. Then came the digital audio. The words were at first indistinct, but as Mr. Lugt filtered out more of the noise, the rhyme became clearer.

“That was the Eureka moment,” Mr. Rolfs said.

In 1890, a girl in Edison’s laboratory had recited:

There was a little girl,

And she had a little curl

Right in the middle of her forehead.

When she was good,

She was very, very good.

But when she was bad, she was horrid.

Recently, the conservation center turned up another surprise.

In 2010, the Woody Guthrie Foundation received 18 oversize phonograph disks from an anonymous donor. No one knew if any of the dirt-stained recordings featured Guthrie, but Tiffany Colannino, then the foundation’s archivist, had stored them unplayed until she heard about Irene.

Last fall, the center extracted audio from one of the records, labeled “Jam Session 9” and emailed the digital file to Ms. Colannino.

“I was just sitting in my dining room, and the next thing I know, I’m hearing Woody,” she said. In between solo performances of “Ladies Auxiliary,” “Jesus Christ,” and “Dead or Alive,” Guthrie tells jokes, offers some back story, and makes the audience laugh. “It is quintessential Guthrie,” Ms. Colannino said.

The Rolfses’ dolls are back in the display cabinet in Wisconsin. But with audio stored on several computers, they now have a permanent voice.