LEADER LF990 - Manual (Page 3)

LF990 Signal Level Meter – Detail Specifications
IMPORTANT NOTE : These are preliminary specifications/information
and are subject to change without notice.
Program memory
Number of storage
Maximum 99,999
Storage contents Setting condition of measurement display
Data memory
Number of storage
Maximum 99,999
Storage contents
Level, C/N, BER, MER measurement value of each channel, measurement time
Display format (CSV) data，
BMP data
Memory slot
Connector type
USB1.1 type A
Functions Measurement setting, measurement data, measurement display screen (BMP) storage
REMOTE
Connector type
USB1.1 type B
Functions Data output, remote control, printer output?
Auto power off
Time setting
5, 10, 20, 60 minutes and continue
Data log function
Measurement time interval
1 to 999 minutes, 1 minutes step settable
Begin/End of measurement time Setting of measurement start time and end time
Number of measurement channel 1 to 200 (Depends on the number of channel setting at the multi measurement display)
Storage contents Channel number, frequency and level of each measurement channel for the digital terrestrial
Storage media USB Memory
Number of storage data Maximum 99,999 (depends on number of channel setting and the capacity of the memory card
Storage data type One file per each measurement
Channel auto search function
Search specification
Analog Level of 40 dBuV and above
Digital terrestrial
Level of 40 dBuV and above +Pilot signal of digital terrestrial
broadcast
Power supply
AC adapter (included)
Lithium ion battery pack (included)
AA type Alkari battery Qty:6
Charging function/Charging time Battery charging for Lithium ion battery pack : Within 12 hours (Time of 100% fully charge)
5 hours (typical) (Time of 70% fully charge)
Battery life time
(When using the lithium ion battery included)
7.5 hours (typ) (VHF/UHF level measurement)
5 hours (typ) (digital terrestrial measurement mode)
Power consumption Maximum 25 W
Display
Display type
5.7inch Color TFT LCD 320 x 240 dot
Brightness LED backlight
Environmental Conditions
Operating Temperature
0 to 40 °C
Operating Humidity < 85 % RH (without condensation)
Storage temperature -10 to 50 °C
Operating Environment In door and out door
Operating Altitude Up to 2,000 m
Overvoltage Category Ⅰ
Pollution Degree 2
Accessories
Lithium battery pack
1
Battery case for 6 AA Alkari battery 1
Battery snap for AA battery connection 1
AC adapter 1
AC cord 1
Carrying case 1
Instruction manual 1
Measurement frequency range
Digital terrestrial
5 to 870MHz Level measurement, simple spectrum display
50 to 864MHz (Broadcast frequency)
Digital terrestrial broadcast BER measurement,
MER measurement, constellation display
Frequency setting
Digital terrestrial
50kHz step
Built-in channel table
Digital terrestrial
VHF, UHF in Japan and Brazil
Level measurement
Digital terrestrial RF format
Analog AM (Video), FM (Audio), CW
Digital QPSK, 16 to 256 QAM, OFDM
Measurement range
Analog 20 to 120 dBuV (-40 to 60 dBmV)
Digital 35 to 120 dBuV (-25 to 60 dBmV)
Lowest display level Digital 25 dBuV (typ)
Accuracy
Analog +/- 2 dB (20 to 30 °C) +/- 3 dB (0 to 40
°C)
Digital +/- 3 dB (0 to 40 °C)
(For the digital, when it is without multipath and
using high accuracy measurement mode)
Measurement bandwidth 280 kHz (typ)
Digital terrestrial broadcast related functions
Input signal parameters Broadcast format Japan digital terrestrial broadcast (ISDB-T
format) compliance
Input level range 45 to 100 dBuV The level difference between channels are
within 20 dB
BER measurement
Measurement format Simple BER
Measurement range Before RS 7.0E-2 to 2.0E-8, 0E+0
After RS 5.0E-1 to 2.0E-5, 0E+0
MER measurement Measurement range
QPSK 5 to30dB
16QAM 10 to 30dB
64QAM 15 to 30 dB
C/N Measurement range 5 to 35 dB
Constellation Modulation format DQPSK, QPSK, 16QAM, 64QAM
Measurement layer Transmission layer (A, B, C) selectable for
measurement
Delay profile measurement
D/U ratio
Resolution: 0.1dB
Display range: 0 to -50dB
Accuracy: +/- 3dB (moving speed 0, D/U > -
30dB, 0 to 40 °C)
Delay time
Display range: 1/3 of valid symbol length
- (1/12 of valid symbol length) to + (1/4 of valid
symbol length)
Valid range: 0 to guard interval length
Marker resolution: 0.21 us (Minimum: depends
on magnification of display)
Display Plot: Entire display or partial magnification
display
Display Marker: Digital value display for D/U ratio and
delay time of the marker location
Level display unit
dBuV (75 ohm terminated), dBuVemf, dBmV (75
ohm terminated), dBmW switchable
Multi display
Number of channel
Maximum 200
V/S measurement
Measurement range
+/- 25 dB (Audio level relative to video level)
Spectrum display
Center frequency
Center frequency of each channel for digital terrestrial
Connector trype
F type receptable (75 ohm)
Voltage measurement
AC voltage
5 to 100 Vrms (50 to 60 Hz)
DC voltage 5 to 50 V
Resolution 0.1 V
Accuracy +/- (5 % + 1 V)
Leader Instruments Corporation
6484 Commerce Drive Cypress , CA 90630 www.LeaderAmerica.com
1 (714) 527-9300
E-mail : [email protected]