Denny is correct.

Per PWA

be required to check his schedule via DBMS or VRU:
1) after block-in of the last flight segment of his rotation prior to his release (see
Section 12 G. 13. - 14.), and
2) no later than 0200 base time on his first on-call day following a non-fly day, so as
to be able to acknowledge:
a) any assignment no later than three hours before a scheduled report of the
rotation or start of a short call period, or
b) the start of a rest period or Crew Scheduling assigned X-day. (see
Section 12 N. 2. Note)
Exception one: If such last non-fly day ends at a time other than 2400, the pilot
will check his schedule no later than two hours after the end of such non-fly day.
Exception two: For purposes of Section 23 S 1. d. 2) a non-fly day will not
include a day on which the pilot:
a) is on vacation.
b) performs flying for the Company.
c) is scheduled to perform flying for the Company.
d) participates in training, other than distributed training (including travel
days).
e) performs an SLI duty period (including a flex day).
f) is on Company business.
g) is removed from his scheduled rotation for the convenience of the Company

AND

5. A long call pilot:
a. must be available for contact by Crew Scheduling at any time while on-call.
b. must be able to report for an assigned rotation which reports no earlier than 12 hours
from the first attempted contact by Crew Scheduling.
23-39
Section 23 - Scheduling

c. must be able to report for a rotation within 12 hours of first attempted contact for
conversion to short call.
d. can be converted to short call no earlier than ten hours from the first attempted
contact by Crew Scheduling and will be released from duty during the ten hours
immediately preceding the start of his short call period.
e. will be notified of his assignment to open time under Section 23 N. or O. by one of
the following two methods:
1) telephone contact from Crew Scheduling.
2) electronic placement of a rotation or conversion to short call that is placed on his
schedule prior to:
a) his release from a rotation, or
b) nine hours before the end of his last non-fly day (other than a vacation day)
before an on-call day.
f. will not be required to remain available for contact in the 12 hours prior to the
scheduled report of an assigned rotation.

13. In order to determine what, if any, assignment has been placed on his schedule for the
period following his release, a reserve pilot is required to check and acknowledge his
schedule via DBMS/VRU after completion of the last flight segment of a rotation and
prior to release. At that time, his schedule may show an assignment:
a. of a rotation with a report that is at least 12 hours after his release.
b. to short call duty beginning no earlier than 10 hours after his release. (see
Section 23 S. 9. b. Exception

In effect, check and check often just do a screen shot and save it in a pdf file after 1500 base time.

Also they have to give you at least 10 hrs when the convert you to SC with a report no earlier than 12 hrs from notification or 2 hrs from the start of the SC window. This is a min.
reasonable time is not waived with this understanding.