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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 16

PULL RANGE

(function)

PULL RANGE refers to the limit for the synthesizer to follow the deviation
of its clock source. This is regardless of whether the deviation is caused by
the source itself or by pull-up/down or varispeed settings. The pull range
includes positive and negative differences of up to ±20.0% of the nominal
clock source rate.

+/- 1.0 % ... +/-20.0 %

(setting)

The pull range can be set here in steps of 1.0 %.

Functions and settings on the GLOBAL 2/4 menu page:

LONEREF

(function)

LOCK NEXT REFERENCE The function allows for setting a period of time
that the synthesizer will wait after a clock-source failure before automati-
cally selecting the next source according to the REF1–3 settings. During this
time, all output signals are still available according to their respective set-
ting. If the failed source returns to operation within the time defined here,
the synthesizer will resynchronize to it. The factory default is 1 MIN.

30SECs, 1MIN

10MINs

30MINs

60MINs

(setting)

One of five time settings between 30 seconds and 60 minutes can be selec-
ted here.

HOLD

(setting)

With this setting, the synthesizer will enter a mode of operation where it
waits until the previously lost clock source returns. The output rate is set
based on the last recognized clock rate.

LOTIME

(function)

LOCK TIME The Lock Time function sets a period required by the synthesizer
to update its clock rate from the previously selected source to a subse-
quently selected source. The factory default is 5 SECs.

5SECs, 30SECs, 1MIN

10MINs

30MINs

(setting)

One of five time settings between 5 seconds and 30 minutes for updating
rate differences between the original and a subsequently selected clock
source can be selected here.

FREEZE

(function)

FREEZE This function allows for blocking the four cursor buttons. This is
convenient for protecting the iCLOCK from unauthorized access. FREEZE
can be canceled by pressing the ENTER and up buttons simultaneously.

GO, SURE ?

(setting)

GO enables the FREEZE function. When the ENTER button has been
pressed, a confirmation request (SURE ? ) will be displayed. If this request is
confirmed by pressing the ENTER button again, the display automatically
jumps to the menu main page. From that moment, the four cursor buttons
are out of operation until the FREEZE function is canceled by using the key
combination mentioned on the left.

GLOBAL 2 / 4

Example

The synthesizer is synchronized to an external
source with a detuning of +2%. A pull range
setting of ±5.0% is selected, and an extra
varispeed of –10% has been configured. In
this case, the synthesizer would correct its
output rate only to an amount of –7% of its
current s2%. The detuning of the
input source and the set pull range are added
to define the maximum rate change. The
factory default is +/-5.0%.

Canceling the FREEZE function

1) Press the ENTER button and hold.
2) Press the up button additionally.

ENTER

Setting L LOTIME

The time constants selected for
the LONEREF function are always

greater than the LOTIME values. The system
automatically corrects equal or smaller
LONEREF values to avoid conflicts during
the synchronization flow!

HOLD is not available when the sys-
tem synchronization function SYNC (see
REF1–3 menu page) is set to CYCLESYNC!

G L O B A L

L O N E R E F L O C K T I M E F R E E Z E R E S E T

2 / 4

3 0 S E C s

5 S E C s

G O

| <

+ 0.0000 %

(setting)

The varispeed factor can be set here in miniature steps of 0.0001 %. The
step width can be changed by moving the cursor (see figure at page 25).
The factory default is + 0.0000 %.