Fluke 990DSL, Руководство пользователя, Страница: 231 / 242

Appendices
Features and Specifications
A
A-9
Operational Specifications (continued)
Function Range Accuracy
TDR Specifications
Launch Pulse
Impedance 100
Ω
1 %
Pulse-width 20 ns, 100 ns,
500 ns, 1000 ns, 2500
ns, 5000 ns 10 % ±5 ns
VOP Selection 0.300 to 0.999 -
Range
(VOP = 0.64, 19 Ga.)
30,000 ft
-
Range Selection 10 ft to 48 kft (Auto.) -
Horizontal Resolution 0.5 ft to 156 ft -
Distance to
Reflection
0 ft to 30,000 ft
1 % ±VOP
uncertainty
Vertical Gain 80 dB 2 dB
Power Filter 5 kHz Highpass -
Averaging Filter 4 waveform average -
Input Protection ±400 V peak -
1
Dist. to End; Dist. to Split
>
50 ft; Split pairs must be same length ±5 %.
2
RTS = Resistance to Strap;
3
Bridged = >100 k
Ω;
4
Bridged = >5 k
Ω
;
5
Nyquist
(Fine) resolution;
6
DMT (Coarse) resolution;
7
@ 25
o
C ± 25
o
C; battery-powered;
8
Accuracies specified with E, F, G, and 1.3 MHz filters @ center
frequencies, with 100
Ω
or 135
Ω
terminations. Addi/- 2 dB (typ.)
tolerance required for 20MHz filter;
9
0.25 MHz to 12 MHz. Additional ±1
dB tolerance required from 12 MHz to 17.5 MHz.