level generator, Digital Multi-meter, Multifunction Calibrator, Cable Tester, Earth Resistance Meter, level meter, attenuator, etc
| № |
Name of measuring instrument |
Parameter |
Category/ Typical
model |
Name,
Code of calibration regulation |
Measuring
range |
Best
Measurement Capability Expanded As An uncertainty |
| 11 |
level generator |
frequency |
level generator |
JJG374-97 verification regulation
for level generator |
50Hz～36MHz 75Ω 150Ω 600Ω |
0.1~1Hz |
| zero level |
0.03dB |
| output level |
0.1 dB |
| Level indicator |
0.1 dB |
| output harmonic wave distortion |
1~2dB |
| 23 |
Digital Multimeter |
Multifunction Calibrator |
| |
DC Voltage |
5100B
9200A |
JJG445-86 Verification Regulation of
Precise AC Voltage Calibration Source JJG410-94 Verification Regulation of DC
Standard Voltage Source JJG166-93 1.1. Verification Regulation of
D. C. Resistors |
0~1000V |
2×10-5 |
| AC Voltage |
100Hz~1MHz 0~750V |
2×10-4 |
| DC Current |
0~
1A |
3×10-4 |
| AC Current |
100Hz~1kHz 0~
1A |
3×10-3 |
| Ohms |
10Ω~100MΩ |
6×10-6 |
| Digital Multimeter |
| DC Voltage |
3458A
8840A
34401A |
JJG315-83 1.2. Verification
Regulation of DC Digital Voltmeter |
0~1000V |
6×10-6 |
| AC Voltage |
JJG(Space Light)34-1999 Verification
Regulation 1.3. For
AC Digital Voltmeter |
100Hz~1MHz 0~750V |
7×10-5 |
| 23(continue) |
Digital Multimeter |
DC Current |
3458A
8840A
34401A |
JJG598-89 Verification
Regulation of DC Digital
Ampere meter
|
0~
1A |
2×10-4 |
| AC Current |
JJG(Space Light)35-1999 Verification Regulation For AC Digital Current meter |
100Hz~5kHz 0~
1A |
6×10-4 |
| Ohms |
JJG724-91 1.4. Verification
Regulation of DC Digital Ohm meter |
0.1Ω~ 100MΩ |
6×10-6 |
| 26 |
Cable Tester |
Attenuation |
DSP4000 |
TMC-XZ-003 Cable Tester Calibration
Criterions |
1MHz ~ 250MHz |
4.26% |
| NEXT |
1MHz ~ 250MHz |
4.26% |
| FEXT |
1MHz ~ 250MHz |
4.26% |
| Return Loss |
1MHz ~ 250MHz |
4.26% |
| Impedence |
1MHz ~ 250MHz |
4.26% |
| Value of Power |
0~-50dBm |
2% |
| Characteristic of Optical Source |
800~1600nm 0~-50dBm |
0.1nm 2% |
| 39 |
Earth
Resistance Meter |
Resistance |
DV
Resistor ZX54 |
1.5. JJG366-1986 Verification Regulation of Earth
Resistance Meter |
0.01Ω～100kΩ |
0.01% |
| DC Voltage |
Multimeter
3458A |
0～500V |
5×10-4 |
| AC Voltage |
10Hz～1kHz 0～300V |
6×10-3 |
| 12 |
level meter ( selective / wideband) |
frequency |
level meter (selective/ wideband) |
JJG777-92 verification
regulation for selective level meter JJG(YD)027-94 1.6. verification
regulation for wideband level meter |
50Hz～36MHz 75Ω 150Ω 600Ω |
0.1~1Hz |
| zero level |
0.03dB |
| Level indicator |
0.1 dB |
| input level |
0.1dB |
| 13 |
attenuator |
attennua tion |
balance attenuator |
JJG028-94 verification regulation for balance variety attenuator |
10kHz~14MHz 150Ω 50Hz~620kHz 600Ω |
0.01~0.07dB |
| imbalance
attenuator |
1.7. JJG419-86 1.8. Verification regulation
for telecom carrier frequency
variety attenuator |
10kHz~36MHz 75Ω |
0.01~0.07dB |
