Telenetics MOT202TRM - Manual (Page 25)

Front Panel Test Switch
Figure 1 - Analog Loopback Test
DTE DTE
RECEIVER
TRANSMITTER
PAD
TRANSMITTER
RECEIVER
Local Modem
Analog LoopBack Mode
RXD
TXD
4-Wire Telephone Line
Remote Modem
Data Mode
Amplifier
Figure 3-1. Analog Loopback Test
Digital Loopback Test
DTE
RECEIVER
TRANSMITTER
TRANSMITTER
RECEIVER
Local Modem
Local Digital LoopBack Mode
4-Wire Telephone Line
Remote Modem
Data Mode
DTE
Figure 3-2. Digital Loopback Test
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