Differences

This shows you the differences between two versions of the page.

--- ews:equipment:start [2020/05/02 21:14]
piumarta [Trash box]
+++ ews:equipment:start [2020/05/06 10:28] (current)
piumarta
@@ Line 14: / Line 14: @@
 The display shows the current temperature of the tip.
-** SAFETY: ** When not in use the soldering station should be either physically unplugged, or switched off at __both__ the soldering station __and__ the power outlet to which it is connnected.
+** SAFETY: ** When not in use the soldering station should be either physically unplugged, or switched off at __both__ the soldering station __and__ the power outlet to which it is connnected. \\
+**安全:** 使用しない場合は、はんだ付けステーションのプラグを物理的に抜くか、 電源コンセントと接続されているはんだ付けステーションの両方の電源スイッチをオフにしてください。
 {{:ews:equipment:soldering-switch-p1350512.jpg?direct&200|}} {{:ews:equipment:outlet-switch-p1350513.jpg?direct&200|}}
@@ Line 28: / Line 29: @@
 The standard solder in the workshop contains 60% tin, 37.5% lead, and 2.5% silver (to increase electrical conductivity).
-** SAFETY: ** Solder contains flux which burns when heated.  Avoid inhaling the fumes.
+** SAFETY: ** Solder contains flux which burns when heated.  Avoid inhaling the fumes. \\
+**安全：** はんだには、加熱すると燃える溶剤が含まれています。 煙を吸い込まないようにしてください。
-** SAFETY: ** Because of the lead content you should wash your hands after soldering and avoid using your mouth to pull more solder out of the reel.
+** SAFETY: ** Because solder contains lead, you should wash your hands after soldering and avoid using your mouth to pull more solder out of the reel. \\
+**安全：** はんだには鉛が含まれているため、はんだ付け後は手を洗って、はんだを口に含まないようにしてください。
 == (D) Fume extractor ==
@@ Line 45: / Line 48: @@
 == (F) Solder wick ==
-To remove small amounts of solder that cannot be sucked: place the tip of the solder wick over the unwanted solder, then heat the wick with the soldering iron.  The wick will absorb the unwanted solder.
+To remove small amounts of solder that cannot be sucked: place the tip of the solder wick over the unwanted solder, then heat the wick with the soldering iron directly above the unwanted solder.  The wick will absorb the unwanted solder.
 After use, trim the end of the wick that has soaked up the solder.
@@ Line 60: / Line 63: @@
 Feed the wire to strip into the mechanism from the left, just below the two top "jaws".
 Squeeze the handle.
-The two "jaws" will move together and down, then apart.
+The two "jaws" will move together and down to grip the insulation, then the insulation will be cut, and finally the jaws will move apart.
 The insulation will be stripped from the tip of the wire to the right of the point where the "jaws" come together.
@@ Line 75: / Line 78: @@
 A digital multimeter that measures voltage, current, resistance, capacitance, and frequency.
-** Note: ** the test leads have protective covers on their connectors that must be removed before plugging them into the multimeter.
+** NOTE: ** the test leads have protective covers on their connectors that must be removed before plugging them into the multimeter.
 For all measurements: connect the black lead to the COM connector on the multimeter.
@@ Line 81: / Line 84: @@
 For all measurements //except// current: connect the red lead to the connector above the black lead.
-The large rotary switch selects what quantity will be measured.
+The large rotary switch selects which quantity will be measured.
 From left-to-right:
-  - OFF means exactly what it says.  Be sure to return the switch to this position when you are finished to save the battery.
+  - OFF means exactly what it says.  Be sure to return the switch to this position when you are finished, to preserve the battery.
   - V measures DC (⎓) or AC (∿) voltage.  The display will indicate which type of voltage has been detected.
   - Ohms (Ω) measures resistance.
@@ Line 93: / Line 96: @@
 The large rotary switch has two more positions, from left-to-right:
+<HTML>
-  - μA measures DC or AC current in microamps.
+  <ol start="6">
-  - mA measures DC or AC current in milliamps.
+    <li> μA measures DC or AC current in microamps. </li>
+    <li> mA measures DC or AC current in milliamps. </li>
-<WRAP clear></WRAP>
+  </ol>
+</HTML>
 {{ :ews:equipment:dmm-covers-p1350524.jpg?direct&200|}}
-** WARNING: ** do not attempt to measure currents higher than 400mA as this will blow the internal fuse and the multimeter will stop working.
+** WARNING: ** do not attempt to measure currents higher than 400mA as this will blow the internal fuse and the multimeter will stop working. \\
+**警告：** 400mAを超える電流を測定しないでください。内部のヒューズが溶断し、マルチメータが機能しなくなります。
 ** NOTE: ** The test lead connectors have protective covers which should be removed before use.
@@ Line 126: / Line 131: @@
   - 1.5v battery tester indicates whether a battery is healthy when delivering 250mA.
-  - DCV measures positive DC voltages.  The red lead must be more positive than the black lead for this to function.
+  - DCV measures positive DC voltages.  The red lead must be connected to a more positive voltage than the black lead.
   - DCV (null) measures DC voltage of either polarity.  0v is indicated by a meter reading in the centre of the display.
   - ACV measures AC voltages.
-  - OFF is exactly what is says.  Return the selector to this position when the meter is not in use.
+  - OFF is exactly what it says.  Return the selector to this position when the meter is not in use.
-  - Ω measures resistance.  Set the range to "x1" to enable a buzzer that indicates electrical continuity.
+  - Ω measures resistance.  Setting the range to "x1" enables a buzzer that indicates electrical continuity (0Ω resistance).
-  - DCmA measures DC current.
+  - DCmA measures DC current in milliamps.
-** SAFETY: ** Do not attempt to measure voltages larger than 250v as the insulation on the probes will not protect you.
+** SAFETY: ** Do not attempt to measure voltages larger than 250v as the insulation on the probes will not protect you! \\
+**安全：** プローブの絶縁耐圧を超えて危険なので250Vを超える電圧を測定しないでください。
-** WARNING: ** Do not attempt to measure current larger than the indicated range or an internal fuse will blow and the meter will stop working.
+** WARNING: ** Do not attempt to measure currents larger than the indicated range or an internal fuse will blow and the meter will stop working. \\
+** 警告：** 表記の範囲を超える電流を測定しないでください。内部のヒューズが飛んでメーターが機能しなくなります。
 ** NOTE: ** The test leads have protective covers over the connectors which must be removed before use.  Do not lose them and always replace them after use.
@@ Line 162: / Line 169: @@
   * Connect the + (longer) lead of the capacitor to the red clip.  Connect the - (shorter, marked with a stripe) lead of the capacitor to the black clip.
-** SAFETY: ** never touch the leads of a large electrolytic capacitor as the discharge current can burn or even kill you.  Never use a piece of metal or wire to discharge a large electrolytic capacitor as the current can cause heating that welds the metal to the capacitor's leads or terminals.
+** SAFETY: ** never touch the leads of a large electrolytic capacitor as the discharge current can burn or even kill you.  Never use a piece of metal or wire to discharge a large electrolytic capacitor as the current can cause heating that permanently welds the metal to the capacitor's leads or terminals. \\
+**安全：** 大きな電解コンデンサのリードには絶対に触れないでください。放電電流によって火傷したり、死亡する可能性があります。 大きな電解コンデンサを放電するときは、金属片やワイヤを使用しないでください。電流が原因で、金属がコンデンサのリード線または端子に永久的に溶接されて加熱される可能性があります。
 ** NOTE: ** the meter comes with a small, green bridging circuit that can be plugged in above the test lead connectors.  You should not need to use it.  Ignore it but also be careful not to lose it.
@@ Line 174: / Line 182: @@
 ==== Oscilloscopes ====
-=== Keysight DSOX4024A ===
+=== Keysight DSOX4024A 200 MHz digital storage oscilloscope ===
 {{ :ews:equipment:keysight-dsox4024a-p1350509.jpg?direct&200|}}
 {{ :ews:equipment:keysight-28w2467-40-ann.png?direct&200|}}
+Digital storage oscilloscopes can store a waveform for you to pan around and zoom into later.
+Waveforms can also be exported as files for processing in your own software.
+Their disadvantages include
+limited vertical resolution (they typically use 8-bit D/A converters),
+aliasing (a problem with any digital system that samples analogue waveforms),
+and poor X-Y mode performance (used for analysing phase differences, channel separation, etc.).
 == Basic operation ==
@@ Line 205: / Line 220: @@
 <WRAP clear></WRAP>
-=== Tektronix MDO3102 ===
+=== Tektronix MDO3102 1 GHz mixed-domain digital oscilloscope ===
 {{ :ews:equipment:tek-mdo3102-p1350515.jpg?direct&200|}}
 {{ :ews:equipment:tek-mdo3102-ann.png?direct&200|}}
+Mixed-domain oscilloscopes allow analogue and digital signals to be captured and analysed at the same time.
+A large bandwidth of 1 GHz is useful for analysing parasitic oscillation in typical op-amp circuits.
 == Basic operation ==
@@ Line 217: / Line 235: @@
 Release the button.
 The connector block should be locked to the socket.
+**NOTE:** Each lead is colour-coded so that you can match the probe with the colour used on the oscilloscope panel and display.
+Connect the test probe to the signal to be investigated.
+Connect the black clip to a ground point on the same circuit.
+**NOTE:** You must connect the black clip to a ground point on your circuit or the signal will not be properly captured by the oscilloscope.
 Adjust the vertical position **(B)** of the trace until it is at the desired height.
@@ Line 230: / Line 255: @@
 <WRAP clear></WRAP>
-=== National VP-5520B ===
+=== National VP-5520B 200 MHz analogue oscilloscope ===
 {{ :ews:equipment:national-scope-p1350531.jpg?direct&200|}}
 {{ :ews:equipment:national-scope-p1350531-ann.png?direct&200|}}
+Like analogue multimeters, analogue oscilloscopes react faster to input changes than digital ones.
+They also have much better vertical resolution and can show finer details in the signal.
+Their disadvantages are that they cannot store or export a signal for later inspection or analysis, and they cannot perform the same range of mathematical analyses as a digital oscilloscope.
 == Basic operation ==
@@ Line 239: / Line 268: @@
 Connect the input leads **(A)**.
 Push the connector plug gently onto the socket and then twist clockwise to lock it in place.
+Connect the tip of the test probe to the signal being investigated.
+Connect the clip of the probe to a ground point on your circuit under test.
+**NOTE:** You must connect the clip to a ground point on your circuit or the signal will not be properly captured by the oscilloscope.
 Adjust the vertical position **(B)** of the trace until it is at the desired place on the display.
@@ Line 245: / Line 279: @@
 Adjust the horizontal main sweep time **(D)** until the desired number of waveform cycles are displayed.
-The selector indicated how many microseconds, milliseconds, or seconds of time correspond to each horizontal division on the display.
+The selector indicates how many microseconds, milliseconds, or seconds of time correspond to each horizontal division on the display.
 Adjust the horizontal position **(E)** until the interesting part of the waveform is in the centre of the display.
@@ Line 265: / Line 299: @@
-Press the orange OUTPUT button to enable the output.
+Press the orange OUTPUT button **(A)** to enable the output.
-Press the small black VOLT/CURR button to change the display from voltage being delivered to current being drawn.
+Press the small black VOLT/CURR button **(B)** to change the display from voltage being delivered to current being drawn.
-The green LED in the middle of the display indicates V or A, respectively.
+The green LED **(C)** in the middle of the display indicates V or A, respectively.
-With the voltage being displayed, use the VOLTAGE control to adjust the output voltage between 0v and 20v.
+With the voltage being displayed, use the VOLTAGE control **(D)** to adjust the output voltage between 0v and 20v.
-Use the CURRENT knob to limit the amount of current that can be drawn.
+Use the CURRENT knob **(E)** to set the maximum amount of current (up to 2A) that can be drawn.
-If the circuit attempts to draw more than that amount of current you set, the red CC indicator will light up.
+If the circuit attempts to draw more than the amount of current you set, the red CC indicator **(F)** will light up.
 [[ http://www.takasago-ss.co.jp/products/power_electronics/dc/lx2/|Manufacturer's product page (JA only) ]]

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