Kirisun DP770 Service Manual

DP770 Service Manual
RSSI 1
1)Set comprehensive
instrument to RX mode
2） Set RF Gen freq to 400MHz
3)Set Amplitude to -110dBm
HP8921A or
similar
instrument
Connect the
antenna port to
RF IN/OUT port
of instrument by
antenna
connector
adapter
PC
1.Enter tune mode
2.Double click ”RSSI1”
3
. C
lick “Start”.
4.
C
lick “Stop” when the value is stable.
5.Click save
The RSSI is
displayed one
bar when input
signal is
-107dBm The
RSSI is
displayed 4 bars
when input
signal is
-70dBm.
RSSI 4
1)Set comprehensive
instrument to RX mode
2） Set RF Gen freq to 400MHz
3)Set Amplitude to -80dBm
HP8921A or
similar
instrument
Connect the
antenna port to
RF IN/OUT port
of instrument by
antenna
connector
adapter
PC
1.Enter tune mode
2.Double click ”RSSI4”
3. Click “Start”.
4.
C
lick “Stop” when the value is stable.
5.Click save
CV Curve
Test the VCO voltage
PC
1.Enter tune mode
2.Double click ”CV Curve”
3
. C
lick “Start”.
4.
C
lick “Stop” when the value is stable.
5.Click save
Low point:＞
=0.5V；
High point:＜
4.5V。
6.2.5. GPS Performance Test Instruction
Item Test Environment Test Equipment Test Method Standard Requirement
GPS
Position
Time
1） Change the radio to
digital channel
2）
Install standard double
mode antenna
3） Put the radio in the
outside area without high
building surround it.
1） DP770
2） Timing tool
1） Remove the battery
2） Install the battery
3） Open GPS function in the menu and
enter “gps information menu”
4） Activate timing tool
5） Check the time when gps positions
successful.
1
、
TTFF
（
cold start
）
Time to first fix
<1minute
2
、
TTFF
（
hot start
）
Time to first fix
<10 seconds
3、
Horizontal Accurancy
<10 meters
Page 30 of 102

Kirisun DP770 Specifications

General

Brand	Kirisun
Model	DP770
Category	Radio
Language	English