Marconi Instruments 2955 - Page 4

GENERAL INFORMATION
AND
DATA
SINAD
or
S/N
meter:
Tones encoder:
Duplex test
Setting:
Moduiation meter:
Tones
encoder:
PERFORMANCE
DATA
Output impedance:
VSWR:
Frequency
Range:
Resolution:
Indi
‘
Setting:
Accuracy:
Output
level
Range (RX mode):
User-sertable default
condition
allows
either
SIN.AD
or S/N readings,
a dedicated key
is provided
to
toggle
the
setting.
Encodes
CCIR.
ZVEL
DZVEI. EEA
(or
EIA)
and
user-defined menu.
User
may
send
up to 11
tones in any
standard
con-
tinuously, tone step
or
burst.
A
facility allows for
tones
to
be
extended.
Duplex key press
selects
test mode.
Independent
modulation
meter and RF signal
generator
allows
any
frequency offset for
duplex
radio or
cross-band
repeater testing.
Encodes
CCnU
ZVEI.
DZVEI.
EEA
(or
EIA) and
user-defined
menu.
User may send
up
to 11
tones in any
standard,
con-
tinuously,
tone
step or
burst.
A
facility
allows
for
tones
to be
extended.
RF signal
generator
section
50
Q
nominal.
N soc.ket:
<1.2:1
to
500
<1.35:1 to
1000 ^IHz.
ENC
socket:
<2.2:1
to
1000
MHz
typical.
0.4 MHz to
1000 MHz.
50 Hz up
to
530
^ylHz.
100
Hz up to
1000
MHz.
S
diztt
disolav.
Keyboard entry;
step
change
variation
by
increment/'
decrement
keys
and
rotary
control.
As
internal
standard.
-140
dBm
to
-20
dBm
(0.0224
p.V
to
22.4
mV PD)
from N socket.
-120
dBm
to
0
dBm
(0.224
)j.V
to 224
mV
PD)
from
BNC socket.
46881 -622N
Apr.
88