Overload Measurement Specifications; External Reference Input Specifications; Auxiliary Input Specifications; Current Output Specifications - Fluke 5820A Service Manual

1-23. Overload Measurement Specifications

The Overload test function applies dc or ac (1 kHz square wave) power into the 50
oscilloscope input and monitors the current. A time measurement counter indicates the
time duration of the applied overload signal. When the input protection circuit reacts and
opens up the 50
In order to prevent front end damage to the oscilloscope, a limited amount of energy is
applied by a user selectable time limit.
Source Typical 'On' current
Voltage indication
5 V to 9 V 100 mA to 180 mA

1-24. External Reference Input Specifications

The External Reference Input selection allows the user to provide their own high
stability 10 MHz reference clock for the 5820A for all functions except the Wave
Generator function. For all other modes, the frequency stability is determined by the
external reference stability. The external reference input must be between 1 to 5 V p-p.

1-25. Auxiliary Input Specifications

Maximum input voltage into the auxiliary input is 40 V p-p.
Channel Configuration
1-Channel
1-Channel
1-Channel
1-Channel
5-Channel
5-Channel
5-Channel
5-Channel

1-26. Current Output Specifications

Amplitude (compliance voltage 2 V max)
Accuracy
Frequency Range
Accuracy
Steps
[1] Amplitude uncertainty for frequency range 45 Hz to 1 kHz at < 120 mV compliance voltage.
load, the calibrator indication is set to 'off' on the right hand display.
Table 1-17. Overload Measurement Specifications
Typical 'Off' current
Table 1-18. Auxiliary Input Performance
Frequency
< 600 MHz
600 MHz to 1 GHz
1 GHz to 2.0 GHz
2 GHz to 3 GHz
< 600 MHz
600 MHz to 1 GHz
1 GHz to 2.0 GHz
2 GHz to 3 GHz
Table 1-19. Current Output Specifications
100 µA to
(0.25% + 0.5 µA)
N/A
Introduction and Specifications
Maximum Time Limit DC or
indication
10 mA
Typical Loss
1.1 dB
1.3 dB
2.0 dB
3.0 dB
1.1 dB
1.3 dB
2.0 dB
3.0 dB
DC
100 mA
General Specifications
AC (1 kHz)
setable 5 to 60 sec
Typical VSWR
1.2:1
1.4:1
1.7:1
2.0:1
1.2:1
1.4:1
1.7:1
2.0:1
Squarewave
100 µAp-p to 100 mAp-p
(0.25% + 0.5 µA) [1]
10 Hz to 100 KHz
2.5 ppm +5 µHz
1,2,5 or continuous
1
1-15