NARDA NBM-550, Operating Manual

Page: 134 / 156

12 Specifications
124
NBM-550 Narda
12.1 Display
12.2 Measurement functions (with HF probes)
Display type Transreflective monochrome LCD
Display size 10 cm (4"), 240 x 320 pixels
Backlight White LEDs, selectable lighting time (OFF, 5 s,
10 s, 30 s, 60 s, PERMANENT)
Display refresh rate 200 ms for bar graph and graphics,
400 ms for numerical result values
Result units mW/cm
2
, W/m
2
, V/m, A/m, % of standard
(% of standard is related to power density)
Display range 0001 to 9999, switchable between variable and permanent triads
Display range,
variable triads 0.01 V/m to 100.0 kV/m
0.01 mA/m to 265.3 A/m
0.001 mW/m
2
to 26.53 MW/m
2
0.1 nW/cm
2
to 2.653 kW/cm
2
0.0001% to 9999%
Display range,
fixed triads 0.01 to 9999 V/m
0.0001 to 265.3 A/m
0.0001 to 9999 W/m
2
0.0001 to 9999 mW/cm
2
0.0001% to 9999%
Result types
(isotropic, RSS) Latest value (Actual), Maximum, Minimum,
Average, Maximum Average
Result type (XYZ mode) Latest values: Actual X, Actual Y, Actual Z
(for probes with separate axis connections)
Time averaging Averaging time selectable from 4 s to 30 min (2 s steps)
Spatial averaging Individual or continuous sampling
Multi-position spatial
averaging Averaging over up to 24 spatially averaged results,
storage of individual position results
and of the total value
Progress memory
(History mode) Graphical display of the latest values versus time
(time span 2 min to 8 h)
Correction frequency 1 kHz to 100 GHz or OFF (direct frequency selection,
interpolation between calibration points)
Hot Spot search Acoustic indication of increasing or decreasing
field strength (Actual or Maximum)
Alarm function 2 kHz warning tone (4 Hz repetition rate), variable threshold
Timer controlled recording
(Timer Logging) Starting time setting: Up to 24 h in advance or record immediately
Recording time: up to 100 h
Store interval: Every 1 s to 6 min (in 11 steps)
Number of store intervals: up to 32000