134: Difference between revisions

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 |manuals=
 * [[Media:070-0524-00.pdf|Tektronix 134 Manual (early)]]
-* [[Media:070-0990-00.pdf|Tektronix 134 Manual (SN6620+)]]
+* [[Media:070-0990-00.pdf|Tektronix 134 Manual "SN6540 and up"]]
+* [[Media:070-0990-00 sn6620.pdf|Tektronix 134 Manual "SN6620 and up"]]
+* [[Media:070-0990-01.pdf|Tektronix 134 Manual (Final version, 1977)]]
 * [[Media:Tek_134_1971_cat.pdf|Tektronix 134 Description in 1971 Catalog]]
 * [[Media:Tek 134 fcp aug 1966b.pdf|Tektronix Type 134 Factory Calibration Procedure, August 1966]]
 }}
-The '''Tektronix 134''' current probe amplifier interfaces a [[P6019]], [[P6020]], [[P6021]] or [[P6022]] current probe to the voltage input of an oscilloscope. It was designed by [[Hans Springer]].
+The '''Tektronix 134''' current probe amplifier interfaces a [[P6019]], [[P6020]], [[P6021]] or [[P6022]] current probe to the voltage input of an oscilloscope. It also has a VOLTS ONLY setting of the input attenuator switch that provides a voltage gain of 125 or 50, depending on the position of the probe selector switch, with a 50 Ω input impedance. It was designed by [[Hans Springer]]. Early versions, up thru S/N 6539, had the switch positions labeled only for the [[P6019]] & [[P6020]] probes but these early versions are still compatible with the later [[P6021]] & [[P6022]] probes introduced in 1969.
-Each 134 came with its own dedicated power supply.
+Each 134 came with its own separate, dedicated power supply using the same Tektronix proprietary coaxial connector as that used in the Type [[131]]s and its [[015-027 | power supplies ]], but the [[131]] and 134 power supplies are ''not'' interchangeable. For more information on the power supplies for the Type 134 see the separate Type [[015-0058-01 | 134 Power Supplies ]] page.
-Early production 134s came with a [[015-0058-00]] for 115  V<sub>AC</sub> or [[015-0059-00]] for 230 V<sub>AC</sub>, which had the male AC power plug built into the power supply body, the same as the 131 power supply.
-Later production got the [[015-0058-01]] for 115  V<sub>AC</sub> or the [[015-0059-01]] for 230 V<sub>AC</sub>.
+{{BeginSpecs}}
-These had a ~1 m cord and AC plug.
+{{Spec | Current Ranges | 1 mA/Div to 1 A/Div, 1−2−5 (scope at 50 mV/Div) }}
-Both of these versions used a Tektronix proprietary coaxial connector on the supply.
+{{Spec | Voltage Gain | 125 in P6019/P6021 switch position }}
+{{Spec | Voltage Gain | 50 in P6020/P6022 switch position }}
+{{Spec | Bandwidth | 10 Hz to 30 MHz in P6019/P6021 x120 mode }}
+{{Spec | Bandwidth | 8 Hz to 54 MHz in P6020/P6022 x50 mode }}
+{{EndSpecs}}
+==Bandwidths==
+{| class="wikitable"
+|-
+!
+! P6019 + <br>Type 134
+! P6019 + <br>Passive<br>Termination
+! P6021 + <br>Type 134
+! P6021 + <br>Passive<br>Termination
+! P6020 + <br>Type 134
+! P6020 + <br>Passive<br>Termination
+! P6022 + <br>Type 134
+! P6022 + <br>Passive<br>Termination
+|-
+! Low Frequency -3 dB
+|align=right|≤12 Hz
+|align=right|≤120 Hz<br>≤450 Hz
+|align=right|≤12 Hz
+|align=right|≤120 Hz<br>≤450 Hz
+|align=right|≤100 Hz
+|align=right|≤935 Hz<br>≤8500 kHz
+|align=right|≤100 Hz
+|align=right|≤935 Hz<br>≤8500 kHz
+|-
+! High Frequency -3dB
+|align=right| ≥40 MHz
+|align=right| ≥60 MHz
+|align=right| ≥36 MHz*
+|align=right| ≥52 MHz*
+|align=right| ≥70 MHz
+|align=right| ≥200 MHz
+|align=right| ≥54 MHz*
+|align=right| ≥90 MHz*
+|-
+! Max. Continuous Current
+|align=right| 15 A<sub>p-p</sub>
+|align=right| 15 A<sub>p-p</sub>
+|align=right| 15 A<sub>p-p</sub>
+|align=right| 15 A<sub>p-p</sub>
+|align=right| 6 A<sub>p-p</sub>
+|align=right| 6 A<sub>p-p</sub>
+|align=right| 6 A<sub>p-p</sub>
+|align=right| 6 A<sub>p-p</sub>
+|-
+|}
-The latest version of the 134 power supply appears to be a Tektronix branded wall wart with an AC line cord and output to an inline connector.
+(*These figures are system numbers and take into account the effects of a 100 MHz oscilloscope. There appears to be little or no electrical difference between the early and late families of the Tektronix current probes. P6019 & P6020 figures are from from the 1968 Tektronix catalog and do not include the oscilloscope. it's hard to understand some of them given the stated 54 MHz bandwidth of the Type 134.)
-{{BeginSpecs}}
+Note that in every case, the passive termination is slightly better for high frequency response, while the Type 134 improves the low frequency response.
-{{Spec | Current range | 1 mA/Div to 1 A/Div, 1−2−5 (scope at 50 mV/Div) }}
-{{Spec | Gain | 50 or 125 (selectable) }}
-{{Spec | Bandwidth | 8 Hz to 54 MHz @ gain 50, 10 Hz to 30 MHz @ gain 125 }}
-{{EndSpecs}}
 ==Links==
@@ Line 70: / Line 116: @@
 Tek134-int3.jpg
 Tek 134 schem.png | Schematic
+latest.jpg | latest version with wall wart PS
 </gallery>