Philips SPENDEX 40 Maintenance Manual page 33

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NATO CONFIDENTIAL
SPENDEX 40 UA 8251/00 AND /Ol
LIMITED MAINTENANCE MANUAL
5.9
Timing board (see Fig. 5.2)
By means of a jumper on setting block X2 the line-out interrupt
signal CLOUT can be synchronised with a dibit clock signal (1200 Hz)
on transmission side coming from the internal modem.
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Option
Position of jumper
Do not synchronise
Synchronise
1-2
2-3
5 . 1 0 Te l e p h o n y b o a r d
None
5.11 V26/V26bis modem (see Fig. 5.3)
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r
5 . 11 . 1 S e t t i n g b l o c k X 2
Jumpers A and B
By means of the jumpers A and B the Request To Send
delay time can be set.
- Clear To Send
RTS-CTS Delay (ms)
Position of jumpers
Jumper A Jumper B
0 . . . 0 . 0 3 5
8 . 5 5 . . . 9 . 3 5
2 4 . 9 0 . . . 2 6 . 4
1 4 7 . 0 . . . 1 5 4 . 0
not inserted
A2-A1
not inserted
A2-A1
B2-B1
not inserted
not inserted
B2-B1
-
Jumper C
With jumper C it is possible to realise such a setting that the
modulator transmits signals at the moment that no data or Answer Back
Tones are transmitted.
Option
Position of jumper C
Transmission of signals
No transmission of signals
C2-C1
not inserted
9922 154 13431
5-2
NATO CONFIDENTIAL