Rion VM-55, Instruction Manual, Page: 120 / 204

108
Input/Output Connectors
AC output characteristic
Output voltage: 1 Vrms (at Level Range Upper)
Output impedance: 600 Ω
Load impedance: 10 kΩ or more
Suitable cable: Output cord CC-24 (BNC - mini plug cable)
The performance of other cables is not guaranteed.
The relationship between the display value shown by the unit and the output
voltage is indicated below.
Ideal characteristics of the display value and the output voltage
When the unit is set to the calibration mode, the output signal is 31.5 Hz,
1.0 Vrms.
Important
Using this feature will reduce battery life by
about 25 percent.
Delay
The unit incorporates an A/D converter which converts the microphone
input signal into digital format for processing by a DSP chip. The result
is then returned to analog format by a D/A converter and output as an AC
signal. Due to this process, the output signal has a constant delay time
with regard to the microphone input signal. The delay time is about 700
μs in waveform recording, and about 1.3 ms in AC OUTPUT.
O
u
tp
u
t v
o
lt
ag
e (
V
rm
s)
10
1
0.1
0.01
0.001
100
10
−90 −80 −70 −60 −50 −40 −30 −20 −10 FS +10
Scale (dB)
FS: Full-scale value