ADC KENTROX
T-SMART MODELS 77111 AND 77961 (VER. 1)
Card Type | T1 CSU |
Chipset | Unidentified |
T1 Transfer Rate | 1.544Mbps |
T1 Protocol | AMI, B8ZS |
Frame Type | SF, ESF |
Data Bus | Serial |

CONNECTIONS | |||
Function | Label | Function | Label |
Monitor receive equalization in jack | J1 | Monitor transmit monitor jack | J8 |
Monitor receive network out jack | J2 | DC power in/alarm signal out (see pinout below | P1 |
Serial control port | J3 | T1 line out (network interface) | P2 |
T1 line in (equipment interface) | J4 | Ground | P3 |
Monitor receive monitor jack | J5 | Local loopback test switch | S1 |
Monitor transmit network in jack | J6 | Alarm cut-off switch | S2 |
Monitor transmit equalization out jack | J7 | Code generator switch | S3 |
P1 PINOUT | |||
Function | Screw | Function | Screw |
+20V to +56V DC power in | 1 | Chassis ground | 4 |
Not used | 2 | Alarm relay common | 5 |
-20V to -56V DC power in | 3 | Alarm relay normally open contact | 6 |
Note:Do not use both P1 screw 4 and P3. | |||
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
| » | Power drawn from SC1 terminals | JB1 | LOCAL |
Power drawn from T1 line | JB1 | LINE | |
| » | Simplex loop enabled | JP1 | Pins 1 & 2 closed |
Simplex loop disabled | JP1 | Pins 2 & 3 closed | |
| » | Alarm Indication Signal transmit delay set to 5 mS | S5/4 | Off |
Alarm Indication Signal transmit delay set to 1 second | S5/4 | On | |
| » | Control port uses 8 data bits | S5/7 | Off |
Control port uses 7 data bits | S5/7 | On | |
| » | Control port uses 1 stop bit | S5/8 | Off |
Control port uses 2 stop bits | S5/8 | On | |
Note:Jumper block JB1 has the words LINE and LOCAL printed on the side. The word indicated should face towards the user. | |||
CODE GENERATOR OPERATION | |
Setting | S4 |
Standard line loopback | Position 0 |
Kentrox line loopback | Position 1 |
Standard test loopback | Position 2 |
Kentrox test loopback | Position 3 |
Standard local loopback | Position 4 |
Kentrox local loopback | Position 5 |
Standard reset loopback | Position 6 |
Kentrox reset loopback | Position 7 |
Quasi-random test pattern | Position 8 |
1 in 8 test pattern | Position 9 |
Note:To generate the code indicated, switch S4 must be pushed for one-half second. To stop generating the code, push S4 again. | |
CONTROL PORT SPEED SELECTION | ||||
Setting | S5/1 | S5/2 | S5/3 | |
19.2Kbps | On | On | On | |
| » | 9600bps | Off | On | On |
4800bps | On | Off | On | |
2400bps | Off | Off | On | |
1200bps | On | On | Off | |
600bps | Off | On | Off | |
300bps | On | Off | Off | |
LINE BUILD OUT SELECTION | ||
Setting | S6 | S7 |
0 dB | Off | Off |
-7.5 dB | On | Off |
-15 dB | Off | On |
-22.5 dB | On | On |
CONTROL PORT PARITY SELECTION | |||
Setting | S5/5 | S5/6 | |
| » | No parity | On | N/A |
Odd parity | Off | On | |
Even parity | Off | Off | |
DIAGNOSTIC LED(S) | |||
LED | Color | Status | Condition |
LOC | Yellow | On | Local loopback test in progress |
LOC | Yellow | Off | Local loopback test not in progress |
ACO | Green | On | Alarm condition exists and S2 has been pressed |
ACO | Green | Off | S2 has not been pressed or no alarm condition exists |
SEND | Yellow | On | Test or loopback code being sent on indicated connection |
SEND | Yellow | Off | Test or loopback code not being sent on indicated connection |
TI | Red | On | Indicated alarm is on T1 equipment |
TI | Red | Off | Indicated condition is not on T1 equipment |
NI | Red | On | Indicated alarm is on T1 network interface |
NI | Red | Off | Indicated condition is not on T1 network interface |
DATA | Green | On | Valid data being received on indicated connection |
DATA | Green | Off | No valid data being received on indicated connection |
CODE | Yellow | On | Test or loopback code being received on indicated connection |
CODE | Yellow | Off | Test or loopback code not being received on indicated connection |
NET | Yellow | On | Network loopback test in progress |
NET | Yellow | Off | Network loopback test not in progress |
TA/FEL | Yellow | On | Remote CSU/DSU loopback test in progress or Set or Test code transmitted |
TA/FEL | Yellow | Blinking | Remote CSU/DSU loopback test verified |
TA/FEL | Yellow | Off | Remote CSU/DSU loopback test not in progress and Set or Test code not transmitted |
PWR | Green | On | Power is on |
PWR | Red | On | Self-test failed |
PWR | N/A | Off | Power is off |
EER | Red | On | Error rate on indicated connection exceeds threshold |
EER | Red | Off | Error rate on indicated connection does not exceed threshold |
OOF | Red | On | Signal is out of frame synchronization on indicated connection |
OOF | Red | Off | Signal is not out of frame synchronization on indicated connection |
DIAGNOSTIC LED(S) (CON'T) | |||
LED | Color | Status | Condition |
YEL | Yellow | On | Yellow Alarm condition detected on indicated connection |
YEL | Yellow | Off | Yellow Alarm condition not detected on indicated connection |
PD | Red | On | Fewer than 1 high bit in 8 detected on indicated connection |
PD | Red | Off | More than 1 high bit in 8 detected on indicated connection |
KA | Red | On | Keep-alive signal transmitted to T1 network interface |
KA | Red | Off | Keep-alive signal not transmitted to T1 network interface |
LOS | Red | On | Loss Of Signal condition detected on indicated connection |
LOS | Red | Off | Loss Of Signal condition not detected on indicated connection |
AIS | Red | On | Alarm Indication Signal condition detected for one second on indicated connection |
AIS | Red | Off | Alarm Indication Signal condition not detected on indicated connection |
BPV | Red | Blinking | Bipolar Variation detected on indicated connection (does not count B8ZS coding) |
BPV | Red | Off | Bipolar Variation not detected on indicated connection |