Keithley 705 20-Channel Scanner Mainframe
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Keithley 705 is a low-cost IEEE-488 compatible scanner mainframe supporting 20 channels with daisy-chain expansion to 100 channels and battery-backed time/date tracking.
Product details
| Model | 705 |
| Manufacturer | Keithley |
| Category | Data Acquisition |
| Availability | Made to order |
Description
Overview
The Keithley 705 is a low-cost IEEE-488 compatible scanner mainframe designed for multi-channel data acquisition and switching applications. The basic mainframe accommodates two plug-in scanner cards and supports various relay card configurations with capability to expand to multiple units.
Key Features
- IEEE-488 bus compatible
- Accommodates two plug-in scanner cards
- 1-pole configuration: 20 channels per card
- 4-pole configuration: 10 channels per card (for four-wire ohms)
- Selectable scan rates from 10 ms to 999.999 seconds
- Battery-backed clock for time/date tracking and time-dependent procedures
- Digital I/O port with 8 input and 8 output lines
- Thirteen built-in internal programs accessible from front panel
- Daisy-chain expansion: up to 4 slave units with 1 master unit for up to 100 channels
Applications
- Multi-channel temperature measurement with thermocouple cards
- Automated switching and data acquisition
- Low-voltage circuit testing
- General-purpose relay switching applications
- Systems requiring IEEE-488 instrumentation control
Specifications
| Channel Capacity | 20 channels (1-pole) or 10 channels (4-pole) per card, up to 2 cards per mainframe |
| Maximum Expansion Channels | 100 channels (2-pole) with daisy-chain expansion |
| Switching Rate | 10 ms to 999.999 seconds (programmable) |
| Relay Drive Current | 350 mA minimum |
| Internal Clock | Hours/Minutes/Seconds or Date/Month, less than 1 minute/month error (typical) |
| Battery Backup | 3.6V nickel-cadmium, 1 month data retention with unit off |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -25°C to 65°C |
| Power Requirements | 105–125V or 210–250V (selectable), 50–400 Hz, 25 VA maximum |
| Dimensions | 127 mm H × 216 mm W × 359 mm D |
| Weight | 3 kg (6.6 lbs) |
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Keithley 705 20-Channel Scanner Mainframe
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