Fluke 5790B - Maximum Non-Destructive Input; Guard Isolation

Introduction and Specifications
Absolute Wideband Specifications (5790B/3, 5790B/5, and 5790B/AF) 1
1-19
Voltage
[1]
Range
Frequency Range
Flatness
[2]
1 year ±
3 °C ± (% of
Reading
+ μV)
Flatness
[3]
Temperature
Coefficient ppm
/ °C
Absolute Specifcations
0 °C to 50 °C
[4]
± (% of Reading + μV)
Resolution
90 Days 1 Year 2 Years
7 V
10 Hz - 30 Hz 0.10 40 0.3 + 500 0.35 + 800 0.4 + 1000
30 Hz - 120 Hz 0.03 40 0.3 + 500 0.35 + 800 0.4 + 1000
120 Hz - 1.2 kHz 0.03 40 0.3 + 500 0.35 + 800 0.4 + 1000
1.2 kHz - 120 kHz 0.03 40 0.3 + 500 0.35 + 800 0.4 + 1000
120 kHz - 500 kHz 0.03 40 0.3 + 500 0.35 + 800 0.4 + 1000
100.0 μV
500 kHz - 1.2 MHz 0.05 40
1.2 MHz - 2 MHz 0.05 75
2 MHz - 10 MHz 0.1 100
10 MHz - 20 MHz 0.15 100
20 MHz - 30 MHz 0.35 200
30 MHz - 50 MHz
[5],[6]
0.6 200
[1] Range limits same as INPUT 1 or INPUT 2.
[2] Relative to 1 kHz, for 2-year specification multiply by 1.5.
[3] Add to flatness specifications when more than 3 °C from calibration temperature.
[4] At input connector.
[5] Applies to 5790B/5 & 5790B/AF only.
[6] Maximum amplitude is limited to 3.5 V.
Wideband Characteristics
Maximum Non-Destructive Input ........................ 10 V rms
Guard Isolation ................................................... 0.5 V peak
Input Impedance
1 kHz ............................................................... 50 Ω (± 0.5 %)
VSWR ............................................................. <1.05 typical
5790B/AF
The 5790B/AF absolute specification is ±0.23 % of voltage reading (1 year, 23 °C ±3 °C, 95 % confidence level (k=2),
normally distributed). Specification applies to 50 MHz, 223.61 mV, referenced to the end of the provided serialized
0.91 meter (3 ft) cable. When using the cable and 50 MHz Cable Correction, other ranges and frequencies can be
measured but the Product is only specified within ±4 % of 50 MHz, 223.61 mV (214.66 mV to 232.55 mV)