Philips SPENDEX 40 Maintenance Manual page 31
Speech encryption decryption equipment
Hide thumbs
Also See for SPENDEX 40:
- Operating manual (25 pages) ,
- Operating instructions manual (21 pages)
Table of Contents
Advertisement
■
r
I
"
r
r
NATO CONFIDENTIAL
S P E N D E X 4 0 U A 8 2 5 1 / 0 0 A N D / O l L I M I T E D M A I N T E N A N C E M A N U A L
4 . 1 4 C r a d l e / u p p e r c o v e r
In the cradle/upper cover the hook switch has been mounted. As soon
as the handset is put down in the cradle, the hook switch is pressed,
as a result of which the signal H00KSW is activated.
4 . 1 5 M a i n s / l i n e fi l t e r
4 . 1 5 . 1 I s o l a t i n g t r a n s f o r m e r s
The mains/line filter is provided with a panel with 2 isolating
transformers. These transformers take care of a galvanic separation
between the equipment and the line.
4 . 1 5 . 2 B a t t e r y
The battery sees to it that in case of a power breakdown and when the
power supply is switched off the contents of the zeroise memory and
the key variable memory remain preserved.
4 . 1 6 P o w e r s u p p l y u n i t
The power supply unit converts the 110/220 V mains supply voltage
into the required supply voltages of +5 V, +12 V and -12 V.
r
9 9 2 2
1 5 4
1 3 4 3 1
4 - 1 7
NATO CONFIDENTIAL
Advertisement
Table of Contents
