Tektronix R561B Oscilloscope

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BAMA 561 Free Manual and Schematic Download Site
This is a MIL Manual for RM561A and R561B even though it's labeled 561

Tektronix Catalog CostLow BidHigh Bidaverage
$610 (1969-new)
$745 (1973)
...
no bids (asked $19.99) 2/4/06 #7586383728 auctions_mcbia (damaged power cord - does power on-no trace visible)

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    CRT 154-0531-00 ---- T5611-31-1 (561B- not the same as the 561A)
    Introduction
    The Type R561B Oscilloscope is compatible with Tektronix 2-Series and 3-Series plug-in units (with some exceptions); thus, it can be used in a variety of applications including differential, multi-trace, wide-band, delayed sweep, sampling and spectrum analysis.

    Programmable plug-in Types 3S6 and 3T6 are not compatible with the Type R561B. However, the capability of these plug-ins is available (without programmability) with Types 3S5 and 3T5. The Type 3B5 can only be used in the righ-hand (horizontal) compartment.

    Cathode-Ray Tube
    Phosphor - P31
    Graticule Area - 8 x 10 cm
    Accelerating voltage - 3.5 kv.
    Useable viewing ares - 8 divisions vertical by 10 divisions horizontal.


    Power Supplies
    Line voltage requirements - 90 to 110 volts, 104 to 126 volts, 112 to 136 volts, 180 to 220 volts, 208 to 252 volts, 224 to 272 volts, rms, 48 to 66 Hz, single-phase ac, 186 W, 2.02 A.


    excerpts from R561 Manual