Sign In |Help & Support
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)
60-channel symmetrical cable carrier telephone equipment test methods methods test 60-channel cold cutting circular evaluating crop germplasm tea plant diagnostic indicators key points
GB/T 4770.3-1984 in English

GB/T 4770.3-1984 in English

VALID

The test methods for 60-channel symmetrical cable carrier telephone equipment

  • Issued on:1984-11-28
  • Implemented on:1985-10-01
  • File Format:PDF
  • Delivery:Via email within 5 business days
Price(USD): $1,340.00
$1,300.00
Standard No: GB/T 4770.3-1984
Document status: VALID
Title in English: The test methods for 60-channel symmetrical cable carrier telephone equipment
Title in Chinese: 对称电缆60路载波电话设备主要性能的测试方法
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 5 business days
Issued on: 1984-11-28
Implemented on: 1985-10-01
Chinese Classification: M31-Carrier communication equipment
Professional Classification: GB-National Standard
Related Keywords: 60-channel symmetrical cable carrier telephone equipment
test methods
methods
test
60-channel
Sample only — not a preview of GB/T 4770.3-1984
Page: 1 / 0
100%

Loading PDF document...

Error loading PDF. Please make sure the file is valid and try again.

We also recommend

  • GB/T 4770.1-1984 in English

    GB/T 4770.1-1984 in English

    The test methods for 3-channel open wire carrier telephone equipment

    1984-11-28
  • GB/T 6555-1986 in English

    GB/T 6555-1986 in English

    Requirements for 3-channel carrier telephone equipment on an open-wire pair

    1986-09-02
  • GB/T 11328-1989 in English

    GB/T 11328-1989 in English

    Specification for 24-channel telephone carrier--Terminal equipment used on the symmetric pair of 1. 2/2. 4mm synthetical coaxial cable

    1989-01-27
  • GB/T 5445-1985 in English

    GB/T 5445-1985 in English

    Specification for HF 12-channel transistorized carrier telephone equipment on an open-wire pair

    1985-10-17