Meyer Sound SIM 3 User's Guide download pdf (Page 20)

CHAPTER 2

The SIM 3 Hardware

Observe the following status LEDs when using the generator:

■ ON/OFF LED – Located above the front panel XLR connector, this LED displays the

status of the generator; it will light if the generator is on. (green)

■ Bus Select LED – The bus select indicator, this LED is lit when the generator is assigned

to one of the buses of the live branch. (blue)

NOTE: If the generator LED is lit but no signal is present, check the “level”

knob to make sure the level has not been turned down.

NOTE: The generator is not used as a reference for measurements unless it

is selected in SIM 3 software from the Branch > Edit Branches menu. On the

branches tab specify “FP” (front panel) in the address box and then select generator.

TIP: Branch 0 defaults to the front-panel inputs using the generator as source.

The source front- and rear-panel male XLR connectors serve the same function — to allow

the generator to send signal to the unit or system being measured. Signal levels can be

manually adjusted from the front panel using the “level” knob or in the software.

TIP: The generator can be quickly muted by using the F1 key in the software

— visible by watching the generator button switch to OFF.

The generator includes the following test signals:

■ Pink Noise – This test signal is random pink noise with equal energy per octave and a

minimum peak-to-average of 12.5 dB for time spans of 1 second or longer. It is primarily

used for frequency response and impulse response (Delay Finder) measurements.

Amplitude may be ﬁxed using the generator’s Pink Noise dialog (accessible from the

Generator menu) after setting the “level” knob to “CAL”. The output level can also be

adjusted using the “level” knob on the front panel.

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Meyer Sound SIM 3 User's Guide Page 20