TEKTRONIX THDP0100/0200 and TMDP0200 series high-voltage differential probes

2. Optional accessories

Accessory Name, Function, Usage, Re order Model

TekVPI calibration fixture provides probe power supply and routes output signals to SMA interface for performance verification and gain adjustment 067-1701-xx

Replace the label (safety component) to cover the repair adjustment hole on the back of the probe, and replace it after repair to ensure safety 335-2913-xx

3. Restrictions on the use of accessories

The test probe and hook tip of THDP0100 are prohibited from being used in CAT III/IV circuits; When used in conjunction with THDP0200/TMDP0200, it is prohibited to use it on circuits with voltages greater than 1000V.

The spring needle tip adapter and the extended test probe adapter will lower the probe voltage level, and their rated voltage (150V CAT II/300V CAT II) must be strictly followed.

When using TP175-FL for CAT III circuit measurement, the probe tip should be retracted (approximately 3.7mm of exposed metal) to prevent arc flashover.

Functional inspection and calibration process

1. Function check (quick verification of probe availability)

(1) Preparation for Inspection

Equipment: Oscilloscope, AC power supply, probe standard accessories.

Prerequisite: When the accessories are fully connected and the voltage source is greater than 42Vpk, it is necessary to confirm that the connection is firm.

(2) Inspection steps and judgment criteria

Input 1 (+/-) Input 2 (-/+) Measurement mode range setting check standard

High range (6000V/1500V/750V) oscilloscope display line voltage with no significant distortion for live wire ground/neutral wire differential

The live/neutral differential low range (600V/150V/75V) oscilloscope displays the line voltage, and the OVERRANGE light lights up when the input exceeds the range by about 20%

No signal display on the common mode high/low range oscilloscope with live wire (same connection point) (AutoZero is required to offset DC offset)

2. Calibration operation (including AutoZero and offset adjustment)

(1) AutoZero (offsetting DC offset)

Preheating: Connect the probe and oscilloscope to power for 20 minutes.

Short circuit input: Use the hook tip to short-circuit the probe+/- input.

Start calibration: Press the probe MENU button, select "AutoZero" from the "Probe Setup" menu on the oscilloscope, and wait for calibration to complete.

(2) DC offset zero adjustment (manual)

Oscilloscope setting: Set the vertical offset of the probe channel to 0V.

Short circuit input: Use a hook tip to short-circuit the probe+/- input.

Enter adjustment mode: Long press the BANDWIDTH LIMITED and RANGE buttons on the probe for about 2 seconds until the OVERRANGE LED flashes and then release.

Adjust the zero position: Use the BANDWIDTH LIMITED and RANGE buttons to adjust the offset voltage displayed on the oscilloscope to 0V.

Storage settings: Press the AUDBLE OVERRANGE button, the OVERRANGE LED stops flashing, and the settings take effect.

Repeat: Switch to another range and repeat steps 3-5.

(3) DC offset zero reset (restore default)

Short circuit input: Use a hook tip to short-circuit the probe+/- input.

Enter reset mode: Long press the BANDWIDTH LIMIT and RANGE buttons for about 4 seconds until the OVERRANGE LED stays on, then release.

Store default value: Press the AUDBLE OVERRANGE button, the OVERRANGE LED will turn off, and the default offset value will be restored.

Repeat: Switch to another range, repeat steps 2-3, and then perform DC offset zero adjustment again.

3. Performance verification (officially recommended 1-year calibration interval)

(1) Required equipment

Minimum requirements for device name, example model

Oscilloscope bandwidth ≥ 500MHz Tektronix MSO/DSO4000

Signal generator ± 100V adjustable amplitude, 100Hz square wave, calibrated Fluke 9100

Pulse generator output ≥ 50V, pulse width ≥ 200ns, rise time ≤ 500ps, 1kHz Avtech AVR-E2-B-W-P

Calibration fixture TekVPI input interface Tektronix 067-1701-xx

The digital multimeter (DMM) supports a true RMS AC range of 100mV/1V with an accuracy of less than ± 0.3%. Tektronix DMM4040/4050

Cable and adapter 50 Ω BNC coaxial cable (36in), BNC-SMA adapter, BNC - double banana adapter, etc. Tektronix 012-0482-xx, 015-1018-xx, etc

Terminal load 50 Ω BNC through terminal Tektronix 011-0049-xx

Attenuator 50 Ω BNC, 2X attenuation Tektronix 011-0069-xx

(2) Gain accuracy verification

Device connection:

Oscilloscope channel connected to calibration fixture → probe output connected to calibration fixture, probe input connected to signal generator through adapter;

The SMA interface of the calibration fixture is connected to the DMM through a coaxial cable, and the DMM is set to AC voltage mode.

Parameter setting and measurement (adjusted by model)

|Probe model | Range | Generator setting (100Hz square wave) | Expected DMM reading (rms) | Qualified range|

| THDP0100 | 600V | 75V rms | 750mV | 735mV~765mV（±2%） |

| THDP0100 | 6000V | 75V rms | 75mV | 73.5mV~76.5mV（±2%） |

| THDP0200 | 150V | 25V rms | 500mV | 490mV~510mV（±2%） |

| THDP0200 | 1500V | 75V rms | 150mV | 147mV~153mV（±2%） |

| TMDP0200 | 75V | 20V rms | 800mV | 784mV~816mV（±2%） |

| TMDP0200 | 750V | 60V rms | 240mV | 235.2mV~244.8mV（±2%） |