8.5 Set Mulitpurpose Relay Configuration
63
8.5
Set Mulitpurpose Relay Configuration
Use the “SET RELAY CONFIG?” menu to configure how the multipurpose relay responds to several
clock conditions. Clock conditions include (1) out of lock, (2) faults, (3) alarms, (4) stabilization,
and (5) failsafe. These are described in the setup procedure shown in Figure 8.6. Alarms consist of
any outside influence, such as a sudden change in GNSS position
, that may affect the operation
of the clock. Faults consist of an internal hardware problem with the clock, such as an oscillator
failure, or a GNSS receiver failure. See page 29 for a description of fault conditions. Failsafe refers
to the relay faulting when the clock loses power. All of these events may be configured to trigger the
relay separately or concurrently. The relay may also be configured to actuate with a programmable
pulse, which is discussed below.
SET RELAY CONFIG.?
ENTER
SETUP
* = Default
DOWN
UP
ENTER
OUT OF LOCK
ON
ON*
OFF
DOWN
UP
FAULT
OFF
ON
OFF*
DOWN
UP
ALARM
OFF
ON
OFF*
DOWN
UP
STABILIZED
OFF
ON
OFF*
ENTER
ENTER
ENTER
Figure 8.6: Relay Setup
8.5.1
Triggering the Relay with a Programmable Pulse
To work with built-in programmable pulse features, set up the relay jumper (JMP10) as discussed in
Section 5.2.4, then set up the programmable pulse mode as discussed in Section 8.8. Configuration
settings described in Figure 8.6 do not apply to the relay when the relay jumper (JMP10) is set for
Programmable Pulse. However, the front-panel annunciator LEDs and other indications still apply
to out-of-lock condition, faults, and alarms when the relay jumper is set for programmable pulse.
WARNING
: The relay has a limited lifetime depending on the voltage and current applied to the
relay contacts. Be sure to check the relay specifications in Table 12.1 before triggering the relay
with a programmable pulse.
1
One notable condition might occur with someone spoofing GNSS signals.
