Brymen BM786 - dBm and Resistance Measurement Specifications

25
LoZ Auto-DCV (Model 789 only)
RANGE
Accuracy
6.0000V, 60.000V, 600.00V, 1000.0V
0.5%+30d
LoZ Auto-DCV Threshold: > +1.0VDC or < -1.0VDC nominal
LoZ Auto-DCV Input Impedance:
Initially approx. 2.1k

, 140pF nominal; Impedance increases abruptly within a fraction of a
second as display voltage is above 50V (typical). Ended up impedances vs display
voltages typically are:
12k

@ 100V
90k

@ 300V
300k

@ 600V
670k

@ 1000V
LoZ Auto-ACV (Model 789 only)
RANGE
Accuracy
1)
50Hz ~ 60Hz
6.0000V, 60.000V, 600.00V, 1000.0V
1.0%+40d
1)
Accuracy specified from 10% to 100% of range
LoZ Auto-ACV Threshold: > 1.0VAC (50/60Hz) nominal
LoZ Auto-ACV Input Impedance:
Initially approx. 2.1k

, 140pF nominal; Impedance increases abruptly within a fraction of a
second as display voltage is above 50V (typical). Ended up impedances vs display
voltages typically are:
12k

@ 100V
90k

@ 300V
300k

@ 600V
670k

@ 1000V
dBm (Model 789 only)
Range and accuracy are subject to ACmV, ACV and reference impedance selected.
Typical 600

reference impedance ranges:
In ACmV: -42.22 dBm to -2.22 dBm
In ACV: -17.78 dBm to 62.22 dBm
Input Impedance: 10M

,140pF nominal
Selectable reference impedance of 4, 8, 16, 32, 50, 75, 93, 110, 125, 135, 150, 200, 250,
300, 500, 600, 800, 900, 1000 and 1200