A-A-50761
(18) Amplifier: bandwidth and deflection factors are unchanged; either channel may be inverted for ± A ± B operation.
(19) Differential Input (A-B) Common Mode: CMRR is at least 40 dB from dc to 1 MHz for common mode signals of 16 div or less. CMRR is at least 20 dB at 50 MHz for common mode signals of 6 div or less.
c. Triggering.
(1) Source: selectable from channel A, channel B, or a composite (Comp) signal from A and B in any display mode. Composite is channels A and B signals switched for Alt and Chop modes and added for A and B mode. Vernier and position controls do not affect A, B, or composite trigger signals. A and B signals are independent of polarity selection.
(2) Frequency
|
Time Base Plug-In |
Trigger Frequency* |
Required Vertical Deflection |
|
1820C, 1824A 1825A, 1840A, 1841A |
dc-50 MHz |
1/2 div |
|
dc- 100 MHz |
1 div |
|
|
1820b, 1822A |
dc-50 MHz |
1/2 div |
|
dc-100 MHz |
2 div |
|
|
1820A, 1821A |
dc-50 MHz |
1 div |
*All display modes except Chop. dc to 100 kHz in Chop.
d. Offset
± 200 div of offset. Allows offset of dc or ac signals up to the dynamic range and maximum input.
e. Vertical Signal Output
(selected by trigger source switch)
(1) Bandwidth: > 50 MHz into 50 ohms
(2) Amplitude: > 50 mV for each division of display into 50 ohms with usable amplitudes up to 500 mV p-p.
(3) Source Impedance- approx 50 ohms
f. General
(1) Operating Environment
Temperature: 0 to + 55oC
(a) Humidity: to 95% relative humidity at 40oC.
(b) Altitude: to 4600 m (15,000 ft).
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