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Showing posts from August 9, 2020

Register 1 controls the input of the RS-232 communications port

  Register 1 Register 1 controls the input of the RS-232 communications port as described in  Table 2 . Table 2    Settings for register 1  Field Description Octal Values BRKINT If BRKINT is set, break is mapped to SIGINTR. On Windows-based systems this field is forced by the system to be set. 000002 = set  000000 = not set ISTRIP If ISTRIP is set, it strips the 8th bit (8th bit is not read). This bit cannot be set on UnMux systems. 000000 = not set IGNCR If IGNCR is set, a received CR character is ignored (not read). 000200 = set  000000 = not set ICRNL If IGNCR is not set and ICRNL is set, a received CR character is translated into a NL character. 000400 = set  000000 = not set INLCR If INLCR is set, a received NL character is translated to a CR character. 000100 = set  000000 = not set IGNBRK If IGNBRK is set, a break condition detected on input is ignored, that is, not put on the input queue and therefore not read by any process. 000001 = set  000000 = not set IGNPAR If IGNPAR is s

BT-Basic Statements for RS-232 Communication

  BT-Basic provides several statements for using the RS-232 ports for communication. These statements enable the system to open and configure a port for RS-232 use. In order to transfer data using RS-232 protocol, an I/O port must be established and configured for RS-232 data transfer. This port is a physical connection to a serial device (such as a printer), from a port on the mux card. A pseudo-device file handles the actual transfer of data to and from the physical device. Thus, when you communicate via RS-232 you are actually accessing a pseudo-device file that the operating system maps to a physical device. Once an RS-232 file is created, the  assign to  statement allows the port (file) to be opened and accessed by the system for data transfer. Then the parameters associated with the RS-232 port are set with one or more  control  statements. The example program shown in  Example 1  demonstrates a data transfer using these statements. Example 1    Example of a data transfer assign

Calling User Functions from BT-Basic

  Calling User Functions from BT-Basic If you prefer to control remote instruments from the BT-Basic testplan, see  Example 7 . Although this method produces the same results as  Example 6 , the frequent interaction between BT-Basic and ATL make this a more complex way to do the test. Example 7  has an analog test that uses a high-frequency coaxial port ("FREQ_CNTR_HIGH" and "FREQ_CNTR_LOW") on the module to connect a frequency counter, FREQ_CNTR, to two nodes ("Node1" and "Node2") on the DUT and then make a measurement. The example works as follows: 1    BT-Basic starts the instrument server, calls a user function that sets the frequency counter to a known condition, and executes the analog functional test, "measure1". 2    ATL instructs the ASRU Card to make the connections between the frequency counter and the DUT and then passes control back to BT-Basic. 3    BT-Basic calls a function that makes the measurement, and stores the resul

DUT power supplies

  Power Products Table 47    DUT power supplies Product No. Model No. Description 44940A 6624A 1 4 outputs: 2 @ 0–7 V, 0–5 A or 0–20 V, 0–2 A and 2 @ 0–20 V, 0–2 A or 0–50 V, 0–0.8 A 44941A 6621A 2 outputs: 0–7 V, 0–10 A and 0–20 V, 0–4 A E4034A 6634B 1 output: 1–100 V, 0–1 A E3784A 6642A 1 output: 0–20 V, 0–10 A N1133A N5747A 1 output: 0–60 V, 0–10 A 1 The 6624A supply is also available in a faceless version (E3785A, 6624A Opt. J9). Table 48    PDU, MPU, Power Supplies Part Description E1135C PDU N1140-97000 Service Replacement PDU 200-240V 3-phase Delta (Option 3PD) N1140-97001 Service Replacement PDU 380-415V 3-phase (Option 3PN) N1140-97002 Service Replacement PDU 208-220V 3-phase Wye (Option 3PY) 2680-0278 screw, 10-32 for mounting PDU 2110-0051 10AF/250V fuse 2110-0012 0.5AF/250V fuse MPU N1140-8003 Module Power Unit (MPU) +5V / +24V Power Supplies E9900-63602 System Card clamshell with +5V / +24V power supplies

Calibration > System Calibration > Required Equipment and Tools

  Required Equipment and Tools Table 1    Required Equipment and Tools Description Part Number Digital multimeter (DMM) 34401A, 3455A, 3456A, or 3458A Frequency counter 5335A or 53131A NOTE:  Use only the specific models of DMM and counter listed above; other models will not work with the calibration software. The instruments must be calibrated and traceable to a national standards laboratory (e.g., NIST in the U.S.).   Digital hygrometer or other instrument to measure temperature and humidity   4-meter GPIB cable 10833C 1-meter GPIB cable 10833A Two power cords   Power strip extension   Two 1-meter dual banana (M)-to-dual banana (M) coaxial cables   1-meter BNC(M)-to-BNC(M) coaxial cable   ASRU Card calibration jumpers (one per module) 03066-61628 Pin verification fixture For 2- or 4-module testhead (Provides full coverage for ASRU-N card; backward compatible with E4033A) E4033C For 1-module testhead (Provides full coverage for ASRU-N card; backward compatible with E3771A) E3771C For

Calibrate the ASRU Cards

  Calibrate the ASRU Cards 1    Log on as  calibrate . 2    Press  Testhead Functs  (F3) and then  Testhead Power On  (F1) to power-up and boot the testhead.   The testhead requires a 30-minute warm-up before calibration. 3    Place the pin verification fixture on either bank of the testhead that contains a module. 4    Press  Testhead Functs  (F3) and then  Fixture Lock  (F5) to lock the fixture onto the testhead. 5    After the fixture is installed on the testhead, execute test 4395 from the Testhead Test Number Entry screen. If you do not specify a module number, the test will repeat for all modules in the  config  file. Follow the instructions displayed on the screen. When you see the message: Do you want to continue? (yes or no): Type  yes  (all lowercase), not  Y ,  Yes  or  YES . a    When instructed, enter the model number of the multimeter and set the GPIB address of the multimeter. Table 5    Set GPIB address of multimeter Multimeter model Steps 3455A and 3456A DMMs Use the G