Telecommunications Techniques Corporation interceptor 147, Reference Manual, Page: 60 / 280

3
Setup Categories
3-18
INTERCEPTOR 147 2 Mbit/s and Data Analyzer
2M PROG
Selects the user-programmed Sa6 four-bit loop code
(see Section 3.3.11 2M PROG). There are only six
unique loop code combinations (0000, 0001, 0011,
1010, 1110, and 1111).
3.3.11 2M PROG
Sets the four-bit Sa6 programmable loop code. Since
these circuits do not have synchronization, there are only
six unique loop code combinations (0000, 0001, 0011,
1010, 1110, and 1111).
3.3.12 CBIT
Use the CBIT item to display the number of the C-Bit that
has been selected.
3.3.13 CBIT Status
Use the CBIT Status item to display C-Bit name and
transmission status in text form, as follows:
Bit Function Description
1 C-Bit Frame Alternating 1, 0, 1, …
Sync Locking [F|f]
2 Escapement Active 0 [ON|OFF]
3 2M Access Loop Network access 1,
Address Customer access 0
[Net|Cust]
4 Origin Loop Network origin 1, 2 & 3
Commands Customer origin 0
[Net|Cust]
5a Loop 2 Command Bit 5 = 0 + Bit 4 = 1
Network origin
5b Loop 2 Command Bit 5 = 0 + Bit 4 = 0
Customer origin