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Dual channel pulse RF power meter YS-2499S
The YS-2499S dual channel pulse RF power meter can measure incident power to obtain corresponding standing wave ratio and reflection coefficient, and
Product details
YS-2499S Dual Channel Pulse RF Pulse Power Meter
YS-2499S dual channel microwave power meter is a dual channel pulse RF power meter. The YS-2499S dual channel pulse RF power meter can be powered by an external deviceTwo channels measure the incident power separatelyAnd reflected powerThus, corresponding standing wave ratio and reflection system can be obtained, and continuous wave microwave power can also be measured.YS-2499S dual channel pulse RF power meter is used for standing wave ratio monitoring of various microwave high-power systems. The YS-2499S dual channel pulse RF power meter is an upgraded product of the YS (M) 2498 dual channel pulse RF power meter.Users can choose a specific directional coupler to expand the power measurement range, which can measure up to 100MW
Technical parameters:
（1） Frequency range:10MHz～18GHz
（2）Power range:-10dBm～+20dBm（50μW～100MW）
（3）Pulse characteristics:a.Pulse width ≥0.8цS～CW
b.Pulse Repetition Frequency100Hz～100KHz
c.Conversion accuracy:CWPulse ±0.5dB
（4）Display mode:a.Form:2CDDisplay screen indicates power measurement reading
b.Unit: Dual channel simultaneous displayWattsperhapsdBm,relative valuedB
Can display standing wave ratio and reflection coefficient in dual channel mode
（5）Power indication accuracy: ≤ ±0.8dB（≤12.4GHz）
（6）Interface:RS232Serial communication interface（DType~9pin(F)For operational control purposes)
（7）Power benchmark:50MHz、1.00mW±1.5%
（8）User selected interface: VSWR detection interface
AChannel andBChannel video output（BNCFor monitoring purposes1mWWhen is200mV
（9）Power supply: AC200V±10%
（10）External dimensions:
YS-2499S Dual Channel Pulse RF Power Meter Detailed Introduction
1. Overview
YS-2499S dual channel microwave power meter is a dual channel pulse RF power meter. The YS-2499S dual channel pulse RF power meter can measure the incident power and reflected power of two channels separately through an external device, thereby obtaining the corresponding standing wave ratio and reflection coefficient. YS-2499S dual channel pulse power meter is used for standing wave ratio monitoring of various microwave high-power systems. The YS-2499S dual channel pulse power meter can also measure continuous wave microwave power and can be used in factories and laboratories.
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2. Technical parameters
2.1 Frequency range: 10MHz~18GHz
2.2 Power measurement range:- 10dBm～+20dBm（50µW～100MW）
2.3 Measurement dynamic range: 30dB
2.4 Display
a. Type: LCD display screen indicating power measurement reading
b. Unit: Dual channel simultaneous display of Watts or dBm, relative value dB. In dual channel mode, the standing wave ratio and reflection coefficient can be displayed.
2.5 Power indication accuracy: ≤ ±0.8dB（≤12.4GHz）
≤±1.2dB（≤18GHz）
2.6 Pulse response: Pulse width ≥ 0.8 µ S~CW
Pulse repetition frequency 100Hz~100kHz
Conversion accuracy: CW to pulse ± 0.4dB
2.7 Power reference: 50MHz
1.00mW±1.5%
2.8 Interface: RS232 serial communication interface (D-type -9pin (F) for remote control)
2.9 User interface selection:
Standing wave ratio detection interface
A channel and B channel video output (BNC - for monitoring purposes) are 200mV at 1mW
2.10 Power Supply: AC mains~220V, 50Hz, 25W
2.11 Overall dimensions of the host: 99mm (height) × 220mm (width) × 350mm (depth)
3. Function of regulating control mechanism
The front and rear panel adjustment control mechanism is shown in Figure 1
3.1 LCD Display Screen
Display power measurement readings.
3．2 power switch
When the power meter is connected to the power supply, if the indicator light is red, it indicates that the instrument is in standby mode. By switching the power switch and turning the indicator light green, the instrument is in working condition.
3．3 keyboard
The keyboard includes 8 keys, including mode, zero adjustment, calibration, setting, storage, retrieval, system, and Enter. For specific operation methods, please refer to the panel operation terms.
3．4 A channel input port
This input port is connected to channel A power (usually connected to incident power).
3．5 B-channel input port
This input port is connected to the B-channel power (usually connected to the reflected power).
3.6 RS232 interface
3.7 Power sockets
3.8 Fuse holder
Install 1A melt wire.
4. Working principle
4.1 Whole machine block diagram (see Figure 2)
4．2 Principles of each unit circuit
a. Channel circuit (channel A and channel B)
The channel circuit consists of a channel coaxial switch, a peak power sensing circuit, a preamplifier, and a channel signal processing circuit. The channel coaxial switch is used to switch between the reference power and the measured power, allowing the instrument to perform calibration operations in continuous operation. The peak power sensing circuit is composed of a detection diode amplification circuit. It is used to sense microwave power and convert it into corresponding electrical signals, which are provided to the subsequent circuit. The preamplifier further processes the information sent by the sensing circuit. The channel signal processing circuit sends the quantized analog information to the microprocessor for data processing.
b. Processing CPU circuits
The control CPU is mainly responsible for processing and computing the information sent by the channel circuit. And continuously transmit the processed data to the panel CPU through internal communication lines.
c. Panel CPU circuit
The panel CPU is mainly responsible for managing the user interface. The user interface mainly includes a front panel keyboard, LCD display, and remote control interface (such as RS232 or GPIB). The panel CPU obtains the measured linear data from the control CPU and displays it according to the user's requirements obtained from the keyboard, such as linear mode (such as W, mW, etc.), logarithmic mode (dBm), or directly displaying standing wave ratio, reflection coefficient, etc. Therefore, the panel CPU also requires a lot of mathematical processing. The remote control interface is actually an extension of the front panel, so it is more reasonable to attribute this part to the panel CPU processing.
d. RS232 serial interface
The instrument provides an RS232 serial interface. When the instrument is in remote control mode, its operation can be controlled by a computer.
5. Structural features
YS2499Dual channel microwaveThe external dimensions of the indicator part of the power meter are 220mm × 99mm × 350mm (b × h × d), and the display part of the instrument is an LCD liquid crystal display screen. The front panel buttons are made of conductive rubber technology, and their control methods are all operated through button menu. The main control board adopts a motherboard structure, which is connected to the channel board through slots in a bus way, forming a structure that is easy to maintain and produce. The channel circuit adopts an electrical shielding structure to reduce the interference of stray electromagnetic fields. The rear panel of the instrument is equipped with an input socket for the power supply and an RS232 interface.
6. Instructions for use（Please refer to the product manual for details）
6.1 Precautions
6.2 Panel operation and usage section
6．3 Remote control mode usage section
a. PC software simulation panel program installation
b. PC software simulation panel program usage
c. Remote control mode and local mode
d. Baud rate setting
e. Initial state of the instrument
When the instrument is powered on, the state it enters is called the initial state. At this time, the instrument is in a local state and its working mode is the same as before the last shutdown.
8. other
8.1 Essential accessories for this product
a. 1 power cord;
b. 2 fuses;
c. 1 technical manual;
d. One product qualification certificate.
Related products:YS-2499A（B）seriesDual channel pulse high-power meter;GX2BB01Series RF power meter; YS1125 RF signal generator; YS3892 frequency selective amplifier; PXSeries microwave frequency meter；FYS3000Complete waveguide testing systemAnd accessories；RCQ1AMicrowave leakage energy tester;SHK-4(3)Variable RF attenuator;BSeries fixed RF attenuatorTJ8-4, TJ8-3, TJ8-5, TJ8-2 series coaxial crystal RF detectors
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