技术资料.pdf - 第42页

42 General Specificatio ns System specifications Scanning input s Analog: 34921A, 34 922A, 34923A, 34 924A, and 3492 5A multi plexer cha nnels Digital 34950A/52A dig ital in and total ize Scan tr iggering Source Interval…

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DC operating characteristics
4
Function
Digits
5
Readings / s
Additional RMS noise error
DCV
7
, DCI, and Resistance
(≤10 kΩ)
6½
6½
5½
5½
4½
4½
0.6 (0.5)
6 (5)
60 (50)
300
600
3000
0% of range
0% of range
0.001% of range
0.001% of range
6
0.01% of range
6
0.1% of range
6
Autozero OFF operation
Following instrument warm-up at calibration temperature ± 1 °C and < 10 minutes, add 0.0002% range
additional error. +5 μV. (For 300 VDC, instead of .0002% of range, need .00066% of range)
Settling considerations
Reading settling times are affected by source impedance, low dielectric absorption characteristics, and input
signal changes.
AC operating characteristics
8
Digits
9
Readings /
AC Filter
ACV, ACI:
6½
6½
6½
6½
7 sec/reading
1
8
10
100
11
Slow (3 Hz)
Medium (20Hz)
Fast (200 Hz)
Fast (200 Hz)
Note:
1. Reading speeds for 60 Hz and (50 Hz) operation; autozero OFF
2. 6½ digits = 22 bits; 5½2 digits = 18 bits; 4½ digits = 15 bits
3. Add 20 μV for DCV, 4 μA for DCI, or 20 mΩ for resistance
4. For 300 VDC, multiply the additional noise error by 3.3
5. Maximum reading rates for 0.01% of AC step additional error; additional settling delay required when input DC
level varies
6. 6½ digits = 22 bits; 5½ digits = 18 bits; 4½ digits = 15 bits
7. For external trigger or remote operation using default settling delay (Delay Auto)
8. Maximum limit with default settling delays defeated
42
General Specifications
System specifications
Scanning inputs
Analog:
34921A, 34922A, 34923A, 34924A, and 34925A multiplexer channels
Digital
34950A/52A digital in and totalize
Scan triggering
Source
Interval, external, button press software, or on monitor channel alarm
Scan count
1 to 50,000 or continuous
Scan Interval
0 0 99 hours; t ms step size
Channel delay
0 to 60 seconds per channel; 1 ms step size
External trig delay
< 2 ms. With monitor on < 200 ms
External trig jitter
< 2 ms
Alarms
Analog inputs
Hi, Lo, or Hi + Lo evaluated each scan
Digital inputs
34950A/52A digital in maskable pattern match or state change
34950A/52A frequency and totalize: Hi limit only
Monitor channel
Alarm evaluated each reading
Alarm outputs
4 TTL compatible. Selectable TTL logic Hi or Lo on fail
Latency
5 ms (typical)
Memory
Type
Volatile
Readings
500,000 with timestamp, readable during scan
States
5 instrument states with user label
Alarm queue
Up to 20 events with channel number, reading, and timestamp
System features
Per-channel
Individual Mx+B scaling and calculated real-time min/max/average
Power fail recovery
Save switch states
Relay maintenance
Counts each relay closure and stores on module. User resettable
Real-time clock
Battery-backed, 20-year typical life
Line power
Power supply
Universal 100 Vac to 240 Vac
Power line frequency
50 – 60 Hz ± 10% automatically sensed
Power consumption
150 VA
Environment
Operating environment
•
0 - 55°C, 2000 m, maximum humidity is 80% RH at 40˚C and decreases
linearly to 37% RH at 55˚C
2
•
IEC 60664-1 pollution degree 1 or 2
•
Refer to 34980A User's Guide, Chapter 4, Module Considerations section for
the details of Environmental Operating Limits (current and power dissipation)
for the Plug-In Modules in Pollution degree 1 or 2 environments.
Storage environment
- 40 °C to 70 °C
1
Note:
1. Storage at temperatures above 40 °C will decrease battery life
2. From 40°C to 55°C, the maximum % Relative Humidity follows the line of constant dew point.
43
Mechanical
Mainframe dimensions
133 H x 426 W x 341 D mm (5.25" x 16.8" x 14")
Full rack, 3 units high
Mainframe weight
8.8 kg (19.6 lbs)
Module dimensions
Approximately 170 W x 270 D x 27 H mm (6.69" x 10.62" x 1.06")
Module weights
0.73 to 1.18 kg (1.6 to 2.6 lbs
Terminal block dimensions
170 W x 165 [or 105] D x 25 H mm (6.69" x 6.49" [or 4.13”] x 0.98")
Terminal block weights
0.27 to 0.36 kg (0.6 to 0.8 lbs)
Regulatory
Safety and EMC
Refer to Declaration of Conformity for the latest revisions of regulatory
compliance at: www.keysight.com/go/conformity
Recommended software
•
Keysight IO Libraries Suite 2019 or greater: www.keysight.com/find/IOLibraries
•
BenchVue: www.keysight.com/find/benchvue
•
BenchVue DAQ: www.keysight.com/find/benchvuedaq
The BenchVue platform is a prerequisite for the BenchVue DAQ application.
Software driver support for programming languages
Software drivers
IVI-C and IVI COM for Windows 7/8.1/10 and LabVIEW
Compatible programming tools and environments
•
Keysight VEE Pro
•
National Instruments Test Stand, Measurement Studio, Lab Windows/CVI,
LabVIEW, Switch Executive
•
Microsoft Visual Studio.NET, C/C++, Visual Basic
Keysight BenchVue Data Acquisition Control and Analysis Application system requirements
Operating system
•
Microsoft Windows 10: 32-bit & 64-bit (Professional, Enterprise, Education,
Home versions).
•
Microsoft Windows 8 & 8.1: 32-bit & 64-bit (Professional, Enterprise, Core).
•
Microsoft Windows 7: SP1 and later 32-bit & 64-bit (Professional, Enterprise,
Ultimate, Home Basic, Home Premium)
Processor
1 GHz or faster (2 GHz or greater recommended)
RAM
RAM: 1 GB (32-bit) or 2 GB (64-bit) (3 GB or greater recommended)
Display
1280x1024 minimum for single instrument view (higher resolution recommended
for multiple instrument view)
Computer Interfaces
LXI
10/100Base-T Ethernet (Sockets, VXI-11 protocol, Web user interface)
USB
Standard USB 2.0
GPIB
IEEE-488
Language
SCPI-1999, IEEE-488.2