Nagra E - Page 9

The me ter has two gradl.l'll<>d scales. 009 in "GIIs
and It\El other in decibels. " is used to <:hed< the
supply voltage, to adjust It\El input seosil;"ity. to
eaect a fOug h ch 9Ck of the c ~cuits and 10
calibfate Ihe record and playback chains.
M echan ical zero setti ng
ay me ans of adj ust ment sc'ew 14 Ihe
mod ulomotar n_ le can be moved 10 the lelt or
10 the right and thus positioned exactly at the
beg inning of the scale.
Bal;lery cheek
LI1W9' scale. The thick part of the ~ Ie indOcata"
II>e mini mum and m e. imun levels of the oopply
voltage
(with batl9<ies}.
Input "e ns ltlll ll y
Uppa.
scale. The NAGRA E meter lunetm s as a
mod "'ome ter, i.e. ~ sllows tho peak value. with
fast use
tme and intagr atocl fall of the recorded
"'9'18 1. K incOfporateS a memory device mak ing it
poss ible to ,ead the VSlU9 displayed. As is
cu S1(l1J1ary with Vl!'met ers , graduation is only
trom -20 dB 10 +3 ee.
Low9r scale. The NAGR/\ E is ocau ippad w< lh its
own checking device. A 1'1008 p1ac9d in. KIa the
' acotd", pormits a quick dIec~ 01 all circu;ls. The
\/Ol taga rnaasuroo is shown 00 tha JOOl9 r (sea
Chap' ''' 3.3.).
Ca litlrallon of 1 1>8 rec:o r<klr
UpiXl< sca le. This scale is used lor c albalioo
{soo Chapler 4)
Chapler 2
OPERATION
2.1. METER REA DING S
3