1A7: Difference between revisions
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Type 1A7 was designed by [[John Addis]] and [[introduced in 1966]]. | Type 1A7 was designed by [[John Addis]] and [[introduced in 1966]]. | ||
In 1968 | |||
which also doubled | ====Type 1A7A==== | ||
In 1968, the 1A7 was superseded by the FET-equipped '''Type 1A7A''' (designed by [[Thor Hallen]]), | |||
which also doubled common-mode rejection and bandwidth (to 1 MHz). | |||
The 1A7A's differential amplifier design was re-used with some modifications | |||
in the [[3A9]], [[7A22]], [[5A22N]], [[AM502]], and [[5030]]/[[5031]]. ''(26A2 too? - schematics needed)'' | |||
Type 1A7A remained available until the end of the [[500-series scopes|500-series]] line after 1974. | Type 1A7A remained available until the end of the [[500-series scopes|500-series]] line after 1974. | ||
== | {{BeginSpecs}} | ||
{{Spec | Deflection | 10 μV/Div to 10 V/Div in 1–2–5 sequence }} | |||
{{Spec | Input impedance | 1 MΩ // 47 pF (either input) }} | |||
{{SpecGroup | 1A7}} | |||
{{Spec | Bandwidth | 1 MHz, LF limit switchable DC, 0.1 Hz to 10 kHz in ×10 steps, HF limit switchable 100 Hz to 100 kHz in ×3/×10 steps, and 500 kHz; AC coupling 1.6 Hz }} | |||
{{SpecGroup | 1A7A}} | |||
{{Spec | Bandwidth | 1 MHz, LF limit switchable DC, 0.1 Hz to 10 kHz in ×10 steps, HF limit switchable 100 Hz to 1 MHz in ×3/×10 steps, AC coupling 1.6 Hz }} | |||
{{Spec | Signal ranges | }} | |||
{| class="wikitable" border=1 style="margin-left: 8em;" | | |||
!Range | |||
! Differential signal | |||
! DC Offset | |||
! Common mode | |||
|- | |||
| 10 μV/Div to 10 mV/Div || ±0.4 V || ±0.4 V || ±10 V | |||
|- | |||
| 20 mV/Div to 0.1 V/Div || ±4 V || ±4 V || ±100 V | |||
|- | |||
| 0.2 V/Div to 1 V/Div || ±40 V || ±40 V || ±500 V | |||
|- | |||
| 2 V/Div to 10 V/Div || ±400 V || ±400 V || ±500 V | |||
|- | |||
|} | |||
{{EndSpecs}} | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek 1a7a 1.JPG|1A7A | |||
Tek 1a7a 2.JPG|1A7A | |||
Tek 1a7a 3.JPG|1A7A | |||
Tek 1a7a 4.JPG|1A7A | |||
Tek 1a7a 5.JPG|1A7A | |||
Tek 1a7a 6.JPG|1A7A | |||
</gallery> | </gallery> | ||
[[Category:Introduced in 1966]] | [[Category:Introduced in 1966]] | ||
[[Category:500 series plugins]] | [[Category:500 series plugins]] |