1A1: Difference between revisions
No edit summary |
No edit summary |
||
| Line 15: | Line 15: | ||
The '''Tektronix Type 1A1''' plug-in for the [[500-series scopes]] has two channels and a -3 dB point of 50 MHz at 50 mV/Div, 28 MHz at 5 mV/Div, and 2 Hz to 15 MHz at 500 μV/Div when channels 1 and 2 are cascaded. | The '''Tektronix Type 1A1''' plug-in for the [[500-series scopes]] has two channels and a -3 dB point of 50 MHz at 50 mV/Div, 28 MHz at 5 mV/Div, and 2 Hz to 15 MHz at 500 μV/Div when channels 1 and 2 are cascaded. | ||
There were three distinct versions of 1A1. | |||
and [[rotary_input_switch|rotary input switches]] that were concentric | * The first version, from 1964 to 1966, has a [[Nuvistor]] front-end, and [[rotary_input_switch|rotary input switches]] that were concentric with the [[BNC]] jacks. The knobs to invert the input channels are concentric with the the vertical position knobs. | ||
with the [[BNC]] jacks, | * The second version, from 1966 to ??? has fluted round V/cm knobs, and lever switches. The channel inversion control is an organ-style pull-push knob. | ||
* The third model, from ??? until the end has four-sided V/cm knobs and a FET front-end. | |||
Type 1A1 uses the "ALT SWEEP SLAVE PULSE" signal that is sent by scopes on pin 7 of the plug-in connector. | Type 1A1 uses the "ALT SWEEP SLAVE PULSE" signal that is sent by scopes on pin 7 of the plug-in connector. | ||
In a Type [[547]] mainframe, | In a Type [[547]] mainframe, | ||
Revision as of 19:11, 13 January 2018
Template:Plugin Sidebar 2 The Tektronix Type 1A1 plug-in for the 500-series scopes has two channels and a -3 dB point of 50 MHz at 50 mV/Div, 28 MHz at 5 mV/Div, and 2 Hz to 15 MHz at 500 μV/Div when channels 1 and 2 are cascaded.
There were three distinct versions of 1A1.
- The first version, from 1964 to 1966, has a Nuvistor front-end, and rotary input switches that were concentric with the BNC jacks. The knobs to invert the input channels are concentric with the the vertical position knobs.
- The second version, from 1966 to ??? has fluted round V/cm knobs, and lever switches. The channel inversion control is an organ-style pull-push knob.
- The third model, from ??? until the end has four-sided V/cm knobs and a FET front-end.
Type 1A1 uses the "ALT SWEEP SLAVE PULSE" signal that is sent by scopes on pin 7 of the plug-in connector. In a Type 547 mainframe, this signal allows channel 1 to be displayed using the "A" timebase and channel 2 using the "B" timebase. This is useful, for example, to view the IF and AF of a radio receiver at the same time. Even after the front-end transitioned from Nuvistors to FETs, the output amplifier continued to use Nuvistors.
Type 1A1 has an External Trigger output for mainframes prior to the 547 that don't support plug-in triggering.
Types 1A1 and 1A2 were introduced together in 1964, the former for high-end use, the latter as an upgrade/replacement for Type CA. Both remained available until the 500-series scope line was discontinued.
The 1A1 is not a perfect superset of the 1A2; it supplies external trigger from channel 1 only.
The 1A1 may have evolved from the Type J, which never went into production.
Tektronix' German distributor, Rohde & Schwarz, apparently manufactured a version of the 1A1 in Germany (see Links).
Specifications
please add
Links
- 1A1 @ amplifier.cd (pictures of a German-produced 1A1)
Pictures
-
Early 1A1
-
left: Nuvistor right: FET
-
left: Nuvistor right: FET
-
left: Nuvistor right: FET
-
Early 1A1 front end
-
Late 1A1 Output Amp
-
Early 1A1 Left View
