Specifications

Installing the DAP
3-13
Table 3-7. Network Management System Connector, Pin/Signal Assignments
Pin
No. Signal
Input/
Output Function
1 Not Used – –
2 Signal Ground – Common ground.
3 Secondary Channel
Receive Data
Output Serial data to CMS system.
4 Secondary Channel Data
Carrier Detect
Output Indicates that secondary
channel signals are being
received.
5 Power Fail Indicator Output If DAP loses power, it drops
the signal on this pin. This
alerts the connected device to
the power failure.
6 Power Fail Detector Input A low signal on this pin
indicates that the connected
device has suffered a power
failure.
7 Secondary Channel
Request-to-Send
Input Indicates CMS system is
ready to transmit data.
8 Secondary Channel
Transmit Data
Input Serial data from CMS system.
9 Signal Ground – Common ground.
10 Not Used – –
Connecting to the Clear Secondary Channel
The NMI or the DTE connector can be used to connect to the Clear Secondary Channel
when the interface connection is RS-232. When the interface connection is V.35, the
NMI connector must be used.
To make this connection to the NMI connector, you must order Cable Part No. 5956-
173C from Milgo. This cable has a 10-pin plug at one end and a RS-232 25-pin
connector at the other end. This cable does not provide secondary channel CTS. The
pin/signal assignments for this connector are listed in Table 3-8. (The leftmost pin is
designated pin 1.)