Configuring Serial Ports B And C; Figure 5-4: Port B Or Port C Ribbon Cable Positions - evertz 8084 Instruction Manual

TECHNICAL DESCRIPTION
Models 8084/8084AD/8085 Closed Caption Encoder Manual

5.3.5 Configuring Serial Ports B and C

Caption encoders containing a model 8038 modem/UART submodule have
fixed RS232-DTE pinouts for ports B and C. Caption encoders
manufactured using the Evertz 8058 modem/UART submodule can be
configured for RS232-DTE or RS422-tributary operation. Refer to section
5.5.3 to determine if your encoder contains an 8058 submodule or an 8038.
These submodules are not interchangeable.
The pinouts corresponding to RS-232 DTE (factory setting) and RS-422
tributary configurations are given in Chapter 2. To change port B or port C
between RS-232 DTE and RS-422 tributary pinouts and voltage levels,
remove the top cover and locate J14, J15, J16 and J17 on the 8058
submodule. To change port B setting, you must move the jumper on J16
and the ribbon cable connector on J15. To change port C setting, you must
move the jumper on J17 and the ribbon cable connector on J14. Figure 5-4
shows the ribbon cable position for either port, while Figure 5-5 shows the
jumper positions for all four possible configurations of these two ports.
To find out whether ports B and C have been configured for RS-232 or RS-
422 logic levels without opening the unit for inspection, refer to section
5.5.3 "Viewing Firmware and PLD Revision Levels".
4
2
2
2
3
2
Ribbon Cable Position
for RS-232 DTE

Figure 5-4: Port B or Port C Ribbon Cable Positions

Revision 1.6.6
Ribbon Cable Position
for RS-422 Tributary
Page 5-8