Audio Input - Microphone Connections; Audio Output - Headphone Connection; Micro/Headphone Set Interface Diagram; Printed Circuit Board Overview - WisyCom CRT 16 Manual

CRT 16, CRT 16-2T
AUDIO INPUT - MICROPHONE CONNECTIONS AND JUMPERS PRE-SETTING
MICROPHONE TYPE
• 2-wire electret mic:
• 3-wire electret mic:
• dynamic mic:

AUDIO OUTPUT - HEADPHONE CONNECTION

• All types of headphones: HD1.4 = AF output B; HD1.5 = AF output A
The AF output is balanced and referred to ground, therefore both AF wires must be ground-isolated.
NOTE: it is possible to remote the PTT push-button by an external wire (it must be ground-shorted in order to operate
the TX1 transmitter) connected to HD1.1 pin. In this case, J4 must be open and J5 closed (and therefore only dynamic
and 2-wire electret microphones can be used).
CRT 16 & CRT 16-2T - MICRO/HEADPHONE SET INTERFACE SIMPLIFIED DIAGRAM
To:
VERSO IL SET
Micro/Headphone set
CUFFIA/MICROFONO
CRT 16 & CRT 16-2T - PRINTED CIRCUIT BOARD, TOP-VIEW (open Unit)
Our laboratory is available for special custom-made products.
WISYCOM S.r.l.
• Via Spin, 156
Tel. +39 0424 382605 •
- UHF FULL-DUPLEX BELT TRANSCEIVER
for WIRELESS-INTERCOM SYSTEMS
CONNECTIONS
HD1.1 = n.c.
HD1.2 = AF input
HD1.3 = ground
HD1.1 = +5V (mic feeding)
HD1.2 = AF input
HD1.3 = ground
HD1.1 = n.c.
HD1.2 = AF input
HD1.3 = ground
• I-36060 Romano d'Ezzelino (VI)
Fax +39 0424 382733 •
JUMPERS
J2 = closed
J3 = open
J4 = open
J2 = open
J3 = closed
J4 = closed
J2 = open
J3 = closed
J4 = open
• Italy
www.wisycom.com • e-mail: sales@wisycom.com
CRT16-3-eng.doc