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| The following instruments have a test certificate:
WE7000, communication module / card, measurement / interface module, pattern I/O probe, and the input/output terminal box.
(Models: 707001, 707002, 707021, 707031, 707032, 707033, 707034, 707035, 707036, 707037, 707038, 707051, 707111, 707121, 707141, 707241, 707245, 707251, 707261, 707262, 707271, 707272, 707275, 707281, 707282, 707811, 707823, 707824)
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| The following measurement modules have calibration certificates:
(Models: 707111, 707121, 707141, 707241, 707245, 707251, 707262, 707271, 707272, 707275, 707281, 707282, 707311)
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| To maintain measurement precision, we recommend that calibration be performed once a year.
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| The warranty period is 1 year for the main instrument, modules, and cards (accessories are not covered by warranty). In the unlikely event that a device should fail during the warranty period, repair will be provided free of charge per the terms of the warranty. |
| At present, a separate DC/AC inverter is required. In case of the WE800 measurement station (eight slots), it has a maximum power consumption of 550VA. |
The lag time from the external terminal to the bus trigger / time base is as follows:
When inputting from TRIG IN:
TRIG IN -> bus trigger signal : 40 ns (typical value)
TRIG IN -> time base signal : 25 ns (typical value)
When inputting from EXT. I/O:
EXT. I/O -> bus trigger signal : 25 ns (typical value)
EXT. I/O ->time base signal : 10ns (typical value)
When outputting to EXT. I/O:
EXT. I/O <- bus trigger signal : 25ns (typical value)
EXT. I/O <- time base signal : 25ns (typical value)
The lag time between the bus trigger / time base and each measurement module differs depending on the module. See the following example:
Bus trigger signal -> WE7111 Digital oscilloscope module : 30 ns
+ sampling interval (typical value*)
* Typical value represents a typical or average value. It is not strictly guaranteed.
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| Simultaneous measurement is possible by making use of the station's internal arming signal. The lag in start timing between each module would be 10 ms or less. (Some modules do not allow connection to the arming signal.) |
| The WE7241 digital temperature measurement module can measure up to ±50V, the WE7271/WE7272 4-CH, 100 kS/s Isolation digitizer module up to ±35V, and the WE7275 2-CH, 1 MS/s Digitizer module accepts up to ±350V. |
| Yes, you can set the range for each channel. |
| You can perform continuous measurement using the digitizer module's Free Run mode. However, data transmission speeds are limited. Please consult your sales representative for details. They can tell you whether data transmission would be practical in your particular operating environment. |
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| Yes it's possible. We've made it so that you can detect the trigger conditions of the input signal with the module, output the result once to the trigger bus of the measuring station, then send back the result from the OR and AND operation once more to the module from the trigger bus. OR and AND are determined using the external signal condition coming from the external input terminals [TRIG IN] and [EXT. I/O], and the module's trigger condition. The settings are as follows:
Set the input conditions for the input channel on the module side, and set the trigger source to bus trigger. In the measuring station's Trigger Source/Timebase Source/Arming Settings dialog box, set it so the signal from the external input terminals [TRIGIN] and [EXT. I/O] input to trigger bus [BUSTRIG1] and [BUSTRIG2]. Also, set it so signals are transmitted from the module to trigger bus [BUSTRIG1], and from trigger bus [BUSTRIG1] and [BUSTRIG2] to the module.
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| The period changes with the type of time base and the number of measurement channels per module.
(1) Time base = internal. Number of channels : 1-2 = 0.2 s, 3-5 = 0.3 s, 6-7 = 0.4 s, 8-10 = 0.5 s. (When modules are connected in a series, the sampling interval is that of the slowest module in the series.)
(2) Time base = external. 2 s or more (regardless of the number of channels).
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| The WE7275 2-CH, 1 MS/s isolated digitizer module comes with an up-to-40 kHz anti-aliasing filter. Also, each digitizer module (WE7275/WE7271/WE7272/WE7251/WE7245) includes a low-pass filter. The cut-off frequency varies depending on the module. |
| AC coupling is supported by the WE7275 2-CH, 1 MS/s Isolated digitizer module. |
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| For high-speed data recording in trigger mode/gate mode, the Digitizer module is equipped with internal memory to store measurement data in order to record reliable data without receiving any effects of the load condition on the PC side. The record length for the WE7251 is 1 M word, or 4 M word for the WE7271/WE7272/WE7275.
The record length per channel is this number divided by the number of measurement channels per module (in the case of the WE7271/WE7272, when you select 3 channels, it is considered to be four). (However, when connecting multiple WE7251s together, the memory is 100K word per channel regardless of the actual number of measurement channels.)
Example : When using four channels with the WE7271/WE7272, you can use 1 M (=4 M/4) word per channel.
Note: the maximum record length (memory length) is one-half of the above mentioned values when using the [Repeat] function which takes measurement data repeatedly in trigger mode.
Example: when using four channels on the WE7271/WE7272 in trigger mode with the repeat function, the memory per channel is 4M/4/2=500k word.
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| The update cycle changes depending on the acquisition mode and the gate time during frequency measurement.
When the acquisition mode is [One Shot], the update cycle is approximately 0.5-1 seconds. However for frequency measurement, it's about 10 seconds when the gate time is 10 seconds.
When the method is [Free Run], the update cycle occurs at each sampling interval. However for frequency measurement, it occurs approximately at each (gate time + sampling interval).
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| Contact input/output is possible using the WE7262 32-bit Digital input/output module's 707823/707824 16-bit Digital input/output terminal box. |
| The input connectors are different (the WE7271 has a clamp type terminal, and the WE7272 has a BNC terminal). Also, the maximum common mode voltage, and maximum voltage between channels vary in their specifications between the two instruments (the WE7272 is lower).
Please see the specification sheet for details. |
| The output connectors are different. The WE7281 has a clamp type terminal, and the WE7282 has a BNC terminal. Also, the maximum common mode voltage, and maximum voltage between channels etc. vary in their specifications between the two instruments (the WE7282 is lower). |
| It's possible to connect using 100Base-TX/10Base-T with the WE7052 Fast Ethernet module. |
| The WE7052 Fast Ethernet module supports automatic selection (AUTO NEGOTIATION) of communication speed and communication method. Manual setting is possible for connecting with an instrument that doesn't have the AUTO NEGOTIATION function. |
| The WE7052 Fast Ethernet module supports DHCP. However, you must have the WE7000 control software ver. 4 or later. |
| Yes, you can use the WE7051 Ethernet module (10Base-T) and the WE7052 Fast Ethernet module (100Base-TX/10Base-T) together. |
| You can bypass the router (subnet) and connect using the WE7000 control software ver. 4 and later. (However, this is limited to the WE7052 Fast Ethernet module.)
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| Connection by cross cable does not comply with Ethernet standards. For reliable data communications, use a hub when you want to make a direct connection to a PC. |
| We have PCI and ISA bus cards, and within each of those there are 1-port and 2-port types. |
| The optical interface cards and modules (the WE7031/WE7032/WE7033/WE7034) we've been selling up to now and the new modules (the WE7035/WE7036/WE7037/WE7038), including cables, are cross compatible. |
| Within the protocol system, TCP and UDP (short for "User Datagram Protocol" which puts a priority on high-speed) both occupy the high rank of IP, but differ in use and function.
Generally speaking, however, when we use the network environment term TCP/IP we are referring to a protocol group which includes UDP. Thus, the WE7000 Ethernet module will not have a problem operating in any network environment that runs TCP/IP.
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| Microsoft(R) Excel 97 and 2000 only. |
| This can be done with the 707702 Computation Function Setup Software (sold separately). By creating arithmetic expressions, you can perform calculations with the 4 basic arithmetic operators, absolute value, pulse width, filtering, calculus, and FFT. Also averaging and waveform parameter measurement is possible. |
| We now offer software called the 707751 Arbitrary Waveform Editor (sold separately). You can create waveforms using the editor's standard functions or with the mouse. You can read in files created in CSV, or in Yokogawa's proprietary wvf file format for WE7000 measurement data. Also, the WE7000 Control Software comes standard with a function that converts CSV files to arbitrary waveform data readable by the WE7121. Thus, you don't need any separately sold software. |
| You can select whether to save files in binary (WVF format) or ASCII (CSV format). WVF is Yokogawa's proprietary format. CSV format can be read by popular spreadsheet programs. |
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WE7000 PC-Based Measurement Instruments |
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