User's Manual

INSTALLATION AND MAINTENANCE MANUAL
Tsunami FAMILY
SPREAD SPECTRUM RADIOS
SEPTEMBER 1999
SECTION 3: INSTALLATION & ADJUSTMENTS PAGE 3-41
PIN 2
Not used
PIN 16 NC, SUMMARY ALARM, FORM C - normally
closed connection on summary alarm relay.
PIN 4
Not used
PIN 17 NO, OUT OF SERVICE SUMMARY ALARM,
FORM C - normally open connection on out-
of-service summary alarm relay. Closed when
in alarm.
PIN 6 BER - in alarm when the received signal is
degraded to an high error rate.
PIN 18 C, OUT OF SERVICE SUMMARY ALARM,
FORM C - common connection for the out-of-
service summary alarm relay.
PIN 8 MUTED – If SW1-5 has been toggled ON, the
mute function is disabled. Enabled, mute
indicates an alarm condition that is one or
both of the following:
1) The security address setting for switch 2
on the back of the radio does not match the
radio bridge on the other end of the link.
2) There is an excessive number of data
errors on the 10BaseT connection that the
radio will not transmit so it MUTEs the data
from being sent.
PIN 19 NC, OUT OF SERVICE SUMMARY ALARM,
FORM C - normally closed connection on out-
of-service summary alarm relay. Open when
in alarm.
PIN 10 FAN - in alarm when one or both of the
internal fans are not operative.
PIN 21 NOT USED
PIN 12 FAR-END - in alarm when the far-end radio
has an alarm condition.
PIN 22 NOT USED
PIN 14 NO, SUMMARY ALARM, FORM C - normally
open connection on summary alarm relay.
Closed when in alarm.
PIN 24 TX PWR MON - voltage equal to the TX PWR
front panel voltage.
PIN 15 C, SUMMARY ALARM, FORM C - common
connection on the summary alarm relay.
PIN 25 RSL MON - voltage equal to the RSL front
panel voltage. Equals far-end RSL if
DISPLAY FAR END button is pressed and
held.
PINS 1, 3, 5, 7, 9, 11, 20, & 23 GROUND, CHASSIS CONNECTION
Table 3-E: Alarm Interface Connections
All alarms are active for a minimum of one second, or as long
as the alarm condition persists, which ever is longer.
TTL signals are “in alarm” when there is a TTL zero condition
(0 V to ± 0.5 V).