Installation manual

CONFIGURATION LBI-38987B
13
Upgrading Hardware
GETC Shelves 19D901868G3 which are upgrading to
the 349A9607G5 software must ensure their hardware is
upgraded to the proper level. (The 19D901868G4 GETC
Shelf meets all Release 5 requirements.)
Upgrading the hardware involves three elements:
• The microprocessor U1, 19A705557P1 (80C32), is
replaced with a faster “Speedy” microprocessor
RYT 121 6060/A (80C320).
• Replacing the AMPS modem chips U4 and U19
with the TI AMPS modem chips 19A704727P4.
• Installing a Ferrite Toroid on the Turbo Board
harness to suppress EMI spurs at 74 MHz.
The replacement microprocessor and Ferrite Toroid are
available in the field installable upgrade kit SPK9505. If
replacement of the modem chips is necessary, they must be
ordered separately. Refer to LBI-38894 and LBI-38822 for
complete installation instructions.
GETC Logic Board Installation
This manual assumes the GETC Logic Board
(19D904266G1 or G4) is previously installed, setup for the
default configuration (Wideband EDACS Station), and fully
operational. If you suspect that the GETC Logic board is
not operating properly, refer to the Troubleshooting section
in this manual.
Turbo Board Installation
This manual assumes the Turbo Board is previously
installed and fully functional. If, after installing or
attempting to install the Turbo Software, the Turbo Board is
not functioning properly, refer to the Troubleshooting
section. Additional maintenance information is also
available in LBI-38822, SRN1060 and SRN1062.
Rockwell Modem Installation
The Rockwell Modem provides a high speed
synchronous serial interface between the Downlink GETC
and the CEC/IMC's Uplink GETC. The Station GETC uses
the modem to send and receive serial digital data
representing GID information, polling messages, keying
messages, and channel assignments. Data transfer rates are
9600 bits per second (bps) using dedicated 3002 data grade
four-wire audio lines. Technical specifications for the
modem may be found in LBI-33031. Information on
installing and testing the modem may be found in LBI-
38894, and LBI-38822.
68
1
2
52
12
5
T1
J6-07
Telephone Line
J6-06
J67
R36
604
D11 D10
R1
5K
2
3
1
U18A
4558
J11
Demodulated
Rx Data
TP107
Rockwell
Modem
19A705178
J3C-22
J3A-32
J3C-24
J3A-31
R2
1K
R38
220
7
6
U18B
4558
D13 D12
R146
604
68
52
T2
Unmodulated
Tx Data
TP105
J6-09 J6-08
Telephone Line
Level Adjustments
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
19 21
U19
Rx Tx
Serial Data
Parallel
Data Bus
Receiving Half of
Telephone Line
Transmitting Half of
Rx
Level
Tx
Level
Figure 5 - GETC Phone Line Level Adjustments