Anritsu S251C Manual do Utilizador

Site MasterModel S251CAntenna andCable AnalyzerProgramming ManualHand-Held Tester for Transmission Linesand other RF Components

6Set Time/Date - Control Byte #8 (08h)Description: Sets the current time and date.This Time/Date is stamped into all stored sweeps (for users’ refere

75) Repeat steps 2-4Byte to Follow: 1 byte1) Serial Port Echo Status00h = Off01h = OnSite Master Returns: 255 (FFh) Operation Complete Byte224 (E0h)

8When this control byte is received, any old calibration data is lost. The Site Master does the calibrationstep specified by the second byte. After t

91-4) Time/Date Stamp (In long integer format)5) Operation result: 255 (FFh) Operation Complete Byte224 (E0h) Out of memory (Memory full)238 (EEh

1092) Single limit line value (lowest byte)93) Segment # (1)94) Segment Status95) Start X (highest byte)96) Start X97) Start X98) Start X (lowe

11bit 2 : Bias – T On/Offbit 3 : High Power On/Offbit 4 : Not Usedbit 5 : Cal On/Offbit 6 : Limit Type ( 0 = Single; 1 = multiple)bit 7 : Unit of meas

12Site Master Returns: 255 (FFh) Operation Complete Byte224 (E0h) Parameter Error : Invalid store location238 (EEh) Time-out ErrorRecall System Set

1324) Frequency Marker 3 (highest byte)25) Frequency Marker 3 (lowest byte)26) Frequency Marker 4 (highest byte)27) Frequency Marker 4 (lowest byt

14bit 4 : Site Master Marker 5 On/Offbit 5 : Site Master Marker 6 On/Offbit 6 - 7 : Not Used135) Status Byte 2: (0 = Off, 1 = On)(LSB) bit 0 : not us

15bit 4 : EEPROM read/writebit 5 : RTC battery bits 6-7 : Not Used.2) Battery Voltage (highest byte)3) Battery Vol

WARRANTYThe Anritsu product(s) listed on the title page is (are) warranted against defects in materi-als and workmanship for one year from the date of

16Delete Sweep Trace - Control Byte #25 (19h)Description: Delete single trace or all stored sweep traces in Site MasterBytes to Follow: 1 byte0 = Del

1778) Single Limit Line value79) Single Limit Line value (lowest byte)80) Segment # (1)81) Segment Status82) Start X (highest byte)83) Start X84

18bit 1 : CW Mode On/Offbit 2 : Bias – T On/Offbit 3 : High Power On/Offbit 4 : Not Usedbit 5 : Cal On/Offbit 6 : Limit Type ( 0b = Single; 1b = Multi

19Bytes to Follow: 1 bytePrinter ID0 – Epson Stylus Models1 – Epson LQ Models2 – Citizen PN Models3 – NEC Superscript Models4 – NEC Silentwriter Mode

20Set RF Source Mode Frequency - Control Byte #33 (21h)Description: Sets RF Source mode status and Frequency. Frequency should be sent in Hz.Bytes t

21bit 2 : Relative Mode On/Offbit 3: Offset Mode On/Offbit 4 : Zero Mode On/Offbits 5- 7 : Not Used2 - 5) Relative Mode Reference Power Level in dBm6

22Zero Mode On/Off - Control Byte #43 (2Bh)Description: Enable or disable Power Monitor Zeroing Mode.Bytes to Follow: 1 byte00h = Off01h = On with tr

23Set Marker Valley - Control Byte #52 (34h)Description: Obtains Marker status information for valley value in the current trace. The value of the by

24Notes:Limit Value depend on the current display mode selected.Return Loss &: Limit is in thousandths of a dBCable Loss Maximum value sent is 540

251-2) Model # (unsigned integer, 0Dh for S251C)3-9) Extended Model # (7 bytes in ASCII)10-13) Software Version (4 bytes in ASCII)The computer sends

Programming OverviewNOTE: This programming manual is written exclusively for the Anritsu Site Master Model S251C. For in-formation on firmware upgrade

26The Site Master sets the position of a marker by its relative position on the graph. The lowest position is 0at the start frequency (or distance).

27Site Master Returns: 8 bytes “HH:MM:SS”1) Hour2) Hour3) :4) Minute5) Minute6) :7) Second8) SecondRead Main Serial Number - Control Byte #22

28Parameter DefinitionsParameter # of bytes Step Example / DescriptionFrequency 4 bytes unsigned 1 Hz 1000.3 MHz = 1000300000Scale (RL, CL) 2 byte

The Site Master serial port buffer is one byte wide. No internal buffer exists, so waiting for the responsefrom the unit is essential. If the Site Mas

1CONTROL BYTE DESCRIPTIONS ... 2Setup System - C

2 Control Byte DescriptionsSetup System - Control Byte #1 (01h)Description: Sets system status flags and switches. The Site Master acts on the entir

31) Measurement Mode00h : RL Frequency01h : SWR Frequency02h : Cable Loss Frequency10h : RL Distance11h : SWR Distance21h : Insertion Loss22h : Insert

4Set Site Master Marker - Control Byte #5 (05h)Description: Sets an individual marker position and status in the current measurement mode.The Site Ma

5238 (EEh) Time-out ErrorLimit Values depend on the current display mode selected.Return Loss &: Limit is in thousandths of a dBCable Loss Maximum