C Loopback Tests
95
6. Enter data from your keyboard. Typing multiple uppercase U characters is a
good way to send an alternating test pattern of binary ones and zeroes. Data re-
ceived by the remote modem enters its analog receiver, is converted to digital
data, is reconverted into analog, and then is transmitted back to your modem.
Your modem passes this test if the data received on your monitor is the same as
the data entered from your keyboard.
7. To exit the test, turn off the modems.
Jumper pins 2 and 3.
VOLUME
EIA RS232C
LEASED
LINE
PHONE
POWER
VOLUME
EIA RS232C
LEASED
LINE
PHONE
POWER
Modem
under test
Local
modem
Figure C-5. Back-to-back test connections.
Содержание MT5600BA
Страница 1: ...Model MT5600BA Model MT5600BL Data Fax Modem User Guide...
Страница 7: ...Contents vii Appendix G ASCII Character Map 106 Index 107...
Страница 8: ...MultiModemII User Guide viii...
Страница 9: ...1 Introduction...
Страница 13: ...2 Quick Start...
Страница 24: ...MultiModemII User Guide 16...
Страница 25: ...3 Using the Front Panel...
Страница 28: ...MultiModemII User Guide 20 Trunks Limbs Branches Twigs Menu Overview...
Страница 39: ...4 AT Commands S Registers Result Codes...
Страница 64: ...MultiModemII User Guide 56...
Страница 65: ...5 Remote Configuration...
Страница 68: ...MultiModemII User Guide 60...
Страница 69: ...6 Callback Security...
Страница 76: ...MultiModemII User Guide 68...
Страница 77: ...7 Leased Line Operation...
Страница 82: ...MultiModemII User Guide 74...
Страница 83: ...8 Solving Problems...
Страница 91: ...Appendixes...
Страница 115: ...Index...