RoHS
EREQUENCY RANGE
1.8~200MHz
RENGE
20W
200W
2KW
SELECTER
RENGE
AVG PEP
SWR & POWER
METER
4
3
.
6
2
1
.
6
1
.
2
1
0
.
8
0
.
6
0
.
4
0
.
2
0
0
1
2
3
4
5
6
7
8
9
1
0
1
2
1
4
1
6
1
8
2
0
0
∞
4
3
2
.
5
2
1
.
7
1
.
5
1
.
4
1
.
3
1
.
2
1
.
1
SWR
F
O
R
W
A
R
D
R
E
F
L
E
C
T
E
D
CROSS MEEDLE
SWR&POWER METER
RANGE
2W× 0.1
20W× 1
200W× 10
2KW× 100
HPTYPE
■ CONTROLES AND FUNCTIONS
■ SPECIFICATIONS
Forward Power Reflected Power
Indicates SWR
Power measuring
range switch.
Mode switch
Connect with 50 ohms coaxial
cable to transmitter or transceiver
Light switch
Connect with 50 ohms coaxial
cablle to antenna system.
DC Power socket for meter
light & P.E.P function
3. Effective Radiated Power＆SWR.
Fig. 2
Forward Power
indicates SWR
Refiected Power
4
3
.
6
2
1
.
6
1
.
2
1
0
.
8
0
.
6
0
.
4
0
.
2
0
0
1
2
3
4
5
6
7
8
9
1
0
1
2
1
4
1
6
1
8
2
0
0
∞
4
3
2
.
5
2
1
.
7
1
.
5
1
.
4
1
.
3
1
.
2
1
.
1
SWR
F
O
R
W
A
R
D
R
E
F
L
E
C
T
E
D
RANGE
2W× 0.1
20W× 1
200W× 10
2KW× 100
INSTRUCTION MANUAL
※Meter light : ON/OFF Can be switched by light switch.
Mathematical verification
Pf : Foward Power Pr : Reflected Power
SWR = = = 1.5
Pf + Pr
Pf
- Pr
10 +
0.4
10
-
0.4
During the various SSB transmission modes, as
shown in the table left, the meter reading of AVG
and P.E.P will differ. Therefore, when in the SSB
transmit mode, befor switching the mode switch
from AVG to P.E.P, make certain that the meter
power setting is correct. Otherwise, the meter
needle will go off-scale, resulting in damage to
the instrument.
■
RF POWER FOR VARIOUS MODULATION MODES
(VOLTAGES SHOWN VARIOUS VOLTAGES FOR 50 OHMS
DUMMY LOAD)
DAIWA INDUSTRY CO.,LTD.Foreign trade div.3-36-6 Ikegami, Ota-ku,TOKYO,
146-0082,JAPAN. Phone:+81-3-3755-5645 Fax:+81-3-3755-2253
http://www.daiwa-industry.co.jp
Select the Mode switch to「AVG」position.
4.
P.E.P
power (Turn Mode switch to
「P.E.P」
position.)
■CAUTlON
AM/FM CARRIER
AM Single Tone
(100% modulation)
SSB Single Tone
Modulation
SSB Two Tone
Modulation
SSB Voice
Modulation
100V
100V
100V
100V
200V
Carrier
Power
(W)
Average
Power
(W)
PEP
(W)
100 100 100
100 150 400
100 100
50 100
20〜50 100
MODULATION MODE
The CN-801 Series is high quality lnstrument with unique features which make tedious mea-
surement of SWR and Power during antenna tests, matching and tuning of transmitters a very easy
task. SWR and Power indicators are installed in one meter unit. One scaIe will indicate Forward
Power. Another scale Reflected Power and SWR is indicated at the crossing point of the 2 needles.
This unique feature makes it possible to read Forward Power, Reflected Power and SWR all at the
same time. HP
Type can also measure P.E.P.(Peak Power in SSB operation.)
■ OPERATION
1. Use only 50 ohms coaxial line fo connections．
This will maintain the accuracy of the meter．
2. For accurate power measurements, use 50 ohms
pure resistance dummy load.(Fig.1) Fig. 1
Antenna 50 ohms coaxial cable
To DC 13.8V
50 ohms
dummy load
CROSS NEEDLE SWR & POWER METER
1. As the meter movements has high sensitivity, it should be handled with utmost attention.Pre-
vent. mechanical shock and vibration.
2.
Measuring power with a poorly matched antenna or disconnecting the out put of the bridge
while operating maydamage the meter.
3.
In low humidity conditions, the needles may stop on its way or may behave as though it cau-
ght on themeter face due to static electricity. In such case,apply commercially available sta-
tic cream or spray for plastics or clothes on the meter face.
The needles return to the origi-
nal position.
4. Use only 50 ohms coaxial cable for connections. This will maintain the accuracy of the meter.
To measure effective radiated power,subtract
reflected power from Forward Power. (Appare-
nt loss is only produced by impeda-nce mi-
smatch and does not include cables losses.)
See Fig.2. The meter indicates Forward power
10W
and Reflected power 0.4W. At the cro-
ssing point of the 2 needles the indication is
SWR1.5.
ANT
TR
INPUT
OUTPUT
HP
TYPE. 1.8〜200MHz
ＶTYPE. 140〜525MHz
G
TYPE. 900〜1300MHz
FREQUENCY
LIGHT
SWITCH
CROSS NEEDLE
SWR & POWER METER
CN-801
SERIES
■
ON
■
OFF
RoHS
The light
&
P. E. P
DC 13.8V
ANT
TR
INPUT
OUTPUT
HP
TYPE.
1.8〜200MHz
ＶTYPE.
140〜525MHz
G
TYPE.
900〜1300MHz
FREQUENCY
LIGHT
SWITCH
CROSS NEEDLE
SWR & POWER METER
CN-801
SERIES
■
ON
■
OFF
RoHS
The light
&
P. E. P
DC 13.8V
HP V
※Add 15% of full scale at 160-200MHz. Power Rating MAX 1kw(144MHz)
TYPE．TYPE．TYPE.
GTYPE
G
Ⅱ
Series
※
HP
type , G
Ⅱ
type
: DC Power(13.8V) is necessary to operate.
HP Type VType
G
Type G
Ⅱ
Type
Frequency ※1.8〜200 MHz 140〜525 MHz 900〜1300MHz 2200〜2450MHz
Power range : Forward 20／200／2KW 20／200W 2／20W 0.2／2W
Tolerance ±10％at full scale
SWR measurement 1：1 〜1：∞
SWR detection sensitivity 5W min 0.4W 0.1W
Input / Output impedance 50 ohms
Input / Output connectors M Type (so
-
239) M or N Type NType
DC Power supply ※ DC13.8V (70mA)
Dimensions and weight 157(W) X 117(H) X 117(D) mm, Approx 1Kg
※ HP
type
, G
Ⅱ
type
:
DC Power(13.8V) is necessary
to operate.
HP type
can also measure P.E.P Peak Power
in SSB operation. (can not measure Reflec-
ted Power range.)
V
,
G
, G
Ⅱ
type
When the transmitter is operated and the
switch is in the「P.E.P」position the meter
needle Monitor P.E.P of the SSB signal. This
function can not hold peak envelope power.
PAT.D123836
PAT.D123843
