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2620A, 2625A
Users Manual
3-10
Alarm evaluation is not carried out for a channel if:
• The limit sense is changed to "OFF". Alarm checking and the alarm limit values are
re-enabled by setting limit sense to "HI" or "LO".
• An open thermocouple has been detected on that channel (thermocouple temperature
function only).
Table 3-7. Alarm Selection
Channel Alarm
PRESS
THESE
BUTTONS:
Complete Alarm
Parameters (Below)
TO
SELECT
FROM
THESE
CHOICES:
0
1
.
.
20
S or T
Alarm Parameters
Alarm
Limit
(Note 1)
Sign,
Value
Decimal
Point
Position
Multiplier (Note 2)
PRESS
THESE
BUTTONS:
TO
SELECT
FROM
THESE
CHOICES:
OFF
HI
LO
±0000 0.0000
00.000
000.00
0000.0
m
x1
k
M
Note 1. Alarm limit can be cycled through HI, LO, and OFF without resetting the alarm value.
Note 2. Multiplier definitions (available for each decimal point position):
m .001
x1 1.0
k 1000
M 1000000
Alarm Indications
Generally, the ALARM annunciator is dimly lit whenever the last measurement on any
channel was found to be in alarm. When the displayed channel is in alarm during review,
the ALARM annunciator flashes, LIMIT is lit, and additional annunciators show the
alarm limit as S and/or T and the alarm sense as "HI" or "LO".