Gai-tronics CB193-001 Call Boxes Manual de usuario descargar pdf (Pagina 39)

Pub.: 43004-031E

Model CB193-xxx, CB194-xxx, and CB195-xxx RF Call Boxes Page

38 of 52

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General Set-Up

Hardware Configuration

PCBA Adjustments

Microphone Level

The microphone (transmit) output level is adjusted using MIC VOL potentiometer, R60, located on the

RF Call Box PCBA. Refer to Figure 11. MIC VOL Test Point represents the signal entering the RF

module.

Speaker Volume

Speaker (receive) volume (Models CB193-xxx or CB195-xxx) or handset receiver volume (Model

CB194-xxx) can be adjusted using SPKR VOL potentiometer, R30, located on the RF Call Box PCBA.

Refer to Figure 11. SPKR VOL Test Point is a –15 dB test point for the signal supplied to the speaker

and a 0 dB test point for the signal supplied to the handset receiver. Maximum signal at the test point,

guaranteeing minimal distortion, is 180 mVrms.

Figure 11. RF Call Box PCBA

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Gai-tronics CB193-001 Call Boxes Manual de usuario Pagina 39