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{{Plugin Sidebar | | {{Plugin Sidebar | ||
manufacturer=Tektronix | type=7B53A | | |manufacturer=Tektronix | ||
summary= | |series=7000-series scopes | ||
image=Tek-7b53a-front.jpg | | |type=7B53A | ||
caption=Tektronix 7B53A Timebase plug-in| | |summary=100 MHz dual timebase | ||
introduced=1973 | | |image=Tek-7b53a-front.jpg | ||
discontinued=1992 | |caption=Tektronix 7B53A Timebase plug-in | ||
|introduced=1973 | |||
manuals= | |discontinued=1992 | ||
* [[Media:070- | |manuals= | ||
* [ | * [[Media:070-1252-00.pdf|7B53A/7B53AN Operators Manual]] (OCR) | ||
* [[Media:070-1342-00.pdf|7B53A/7B53AN Instruction Manual -00]] (OCR) | |||
* [[Media:070-1342-01.pdf|7B53A/7B53AN Instruction Manual -01]] (OCR) | |||
* [[Media:070-1471-00.pdf|7B53A/7B53AN Option 5 (TV Sync Separator) Instruction Manual Supplement]] (OCR) | |||
* [[ | |||
* [[Media: | |||
<small> | |||
'''Modifications''' | |||
* [[media:7B53A MOD.pdf|7B53A and 7B53AN Custom Modifications Manual]] | |||
* [[Media:061-1570-00.pdf|7B53A and 7B53AN Mods]] | |||
</small> | |||
}} | }} | ||
The '''Tektronix 7B53A''' is a 100 MHz dual time base plug-in for [[7000-series scopes]] that was [[introduced in 1973]] and produced until the discontinuation of the 7000 series in 1992. | |||
It succeeded the short-lived [[7B52]], with sweep mode selection integrated into the time/Div switch, and the older combined trigger level/polarity control replaced with separate, concentric knobs. | |||
It | |||
The 7B53AN is | The '''7B53AN''' is identical to the 7B53A but omits the circuits needed to drive the alphanumeric readout system provided in 7000-series mainframes. | ||
readout system provided in 7000-series mainframes. | |||
There does not appear to have been a product sold called simply "7B53". | The '''TD-1085/U''' is a military designation for the 7B53AN11 which was used in the [[AN/USM-281C]] military version of the [[7603]] scope. | ||
There is a 7B53N, a 7B53A, and a 7B53AN. | |||
The '''TD-1159/U''' is another military version of the standard 7B53A with readout support. | |||
The '''7B53N''' has a nearly identical front panel layout as the [[7B52]], but omits the readout circuitry. | |||
There does not appear to have been a product sold called simply "7B53". There is a 7B53N, a 7B53A, and a 7B53AN. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Sweep rates | 50 ns/Div to 5 s/Div in | {{Spec | Sweep rates | 50 ns/Div to 5 s/Div in 1−2−5 sequence (5 ns with ×10 magnification)}} | ||
{{Spec | Deflection | {{Spec | Deflection | 10 mV/Div, 100 mV/Div or 1 V/Div, up to 2 MHz }} | ||
{{Spec | Sensitivity | 0.3 Div or 100 mV up to 10 MHz, 1.5 Div or 500 mV up to 100 MHz}} | {{Spec | Sensitivity | 0.3 Div or 100 mV up to 10 MHz, 1.5 Div or 500 mV up to 100 MHz}} | ||
{{Spec | Coupling | {{Spec | Coupling | DC, AC (> 30 Hz), AC LF REJ (> 30 kHz), AC HF REJ (30 Hz — 150 kHz) }} | ||
{{Spec | Input impedance | 1 MΩ // 20 pF }} | {{Spec | Input impedance | 1 MΩ // 20 pF }} | ||
{{Spec | Jitter | {{Spec | Jitter | < 1 ns at 75 MHz }} | ||
{{Spec | Features | | {{Spec | Features | | ||
* Dual delayed timebase | * Dual delayed timebase | ||
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* Option 5 for the 7B53A adds a TV Sync Separator (video trigger). | * Option 5 for the 7B53A adds a TV Sync Separator (video trigger). | ||
* Several special custom modifications exist for the 7B53A(N): | * Several special custom modifications exist for the 7B53A(N): | ||
** MOD FB adds a gated X-Y mode for operation with the Rotational Function Generator (RFG) for the [[Engine Analyzer]] | ** MOD FB adds a gated X-Y mode for operation with the Rotational Function Generator (RFG) for the [[Engine Analyzer System]] (7B53A only) | ||
** MOD 178H adds an alternate sweep mode, deletes mixed sweep mode | ** MOD 178H adds an alternate sweep mode, deletes mixed sweep mode | ||
** MOD 769G adds Delay Gate and Delayed Sweep Gate rear outputs | ** MOD 769G adds Delay Gate and Delayed Sweep Gate rear outputs | ||
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==Links== | ==Links== | ||
{{Documents|Link=7B53A}} | |||
==Operation== | ==Operation== | ||
===Delayed Sweep Gate output === | ===Delayed Sweep Gate output === | ||
When the delayed timebase trigger source switch is set to INT (pushed in) and the internal connector P613 is in the active position, | When the delayed timebase trigger source switch is set to INT (pushed in) and the internal connector P613 is in the active position, the DLY'D TRIG IN connector becomes a Delayed Sweep Gate output. | ||
the DLY'D TRIG IN connector becomes a Delayed Sweep Gate output. | This is useful e.g. to connect to a [[7D15]]'s arming inputs, or a [[7D12]]/[[M2]]'s external trigger input. See the 1975 TekScope article linked below. | ||
This is useful e.g. to connect to a [[7D15]]'s arming inputs, or a [[7D12]]/[[M2]]'s external trigger input. | |||
See the 1975 TekScope article linked | |||
===Variable control=== | ===Variable control=== | ||
Through an internal jumper, the front-panel variable control (red knob) can be selected to vary either the main sweep, | Through an internal jumper, the front-panel variable control (red knob) can be selected to vary either the main sweep, | ||
the delayed sweep or the main sweep hold-off. See the 1975 TekScope article linked | the delayed sweep or the main sweep hold-off. See the 1975 TekScope article linked below. | ||
===Use as Delayed Timebase === | ===Use as Delayed Timebase === | ||
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===X-Y operation=== | ===X-Y operation=== | ||
The 7B53 supports X-Y mode by selecting the "Ampl" position on the Time/Div switch. | The 7B53 supports X-Y mode by selecting the "Ampl" position on the Time/Div switch. | ||
The X signal can be picked up from a vertical plug-in via the internal trigger path or applied via the "Main Trig In or Amp In" input, | The X signal can be picked up from a vertical plug-in via the internal trigger path, or applied via the "Main Trig In or Amp In" input, as determined by the Trigger Source switch setting. | ||
as determined by the Trigger Source switch setting. Sensitivity on the external input is 100 mV/Div, | Sensitivity on the external input is 100 mV/Div, which can be increased to 10 mV/Div by selecting the ×10 magnifier, or decreased to 1 V/Div by pushing the EXT÷10 button. | ||
which can be increased to 10 mV/ | |||
==Links== | |||
* [[Media:Tekscope 1975 V7 N5.pdf|TekScope Vol. 7 No. 5, 1975 p.15+: Dave McCullough, ''Delayed gate aids oscilloscope digital measurements'']] | |||
* [https://www.youtube.com/watch?v=75wUU_tc-zc Tektronix 7B53A Repair and Alignment] by Zenwizard Studios @ YouTube | |||
==Prices== | ==Prices== | ||
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|align=right| $2,500 | |align=right| $2,500 | ||
|- | |- | ||
! | ! In 2023 Dollars | ||
|align=right| $ | |align=right| $5,800 | ||
|align=right| $ | |align=right| $4,900 | ||
|align=right| $ | |align=right| $4,200 | ||
|align=right| $ | |align=right| $4,400 | ||
|align=right| $ | |align=right| $5,800 | ||
|- | |- | ||
|} | |} | ||
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TD-1085U.jpg | TD-1085/U, military version of 7B53AN | TD-1085U.jpg | TD-1085/U, military version of 7B53AN | ||
7B53A-Opt5.jpg | 7B53A Option 5 | 7B53A-Opt5.jpg | 7B53A Option 5 | ||
7B53N.png | 7B53N | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7B53N}} | |||
{{Parts|7B53A}} | |||
[[Category:7000 series horizontal plugins]] | [[Category:7000 series horizontal plugins]] |