The Keithley 7001 is an 80-channel Switch/Control Mainframe providing high-density signal routing for automated testing, data acquisition, and process control. Its two plug-in card slots accommodate up to 40 channels each, supporting DC, RF, and optical switch cards with signal levels ranging from nanovolts to 1100V DC and femtoamps to 5A. The mainframe delivers automatic break-before-make switching with programmable settling times, non-volatile memory for 100 complete switch patterns, and dual-line vacuum fluorescent display for real-time channel status monitoring.
Technical Specifications
The analog backplane features four 3-pole rows (Hi, Lo, Guard) enabling matrix and multiplexer expansion between cards. Path isolation exceeds 10¹⁰Ω with 10⁹Ω with <75pF to chassis. Maximum voltage rating is 250V DC, 250V RMS, or 350V AC peak (path to path or path to chassis). Signal path current handling reaches 1A peak. Channel crosstalk measures <-65dB at 1MHz with 50Ω load; bandwidth sustains <3dB loss at 100MHz.
Switch settling time is automatically selected by the mainframe per card, with additional programmable time from 0 to 99999.999 seconds in 1ms increments. Card pair function enables synchronization of channel closures across both slots for up to 8-pole switching capability.
– Key Features
• Trigger sources: External TTL (600ns minimum pulse), IEEE-488 bus (GET, *TRG), Trigger Link, and internal timer (1ms to 99999.999 seconds in 1ms steps)
• Status output: Channel Ready signal (TTL-compatible, 10µs typical low-going pulse via rear panel BNC)
• Digital I/O: Four open-collector outputs (30V maximum pull-up, 100mA sink, 10Ω impedance), one TTL input, common connection
• Relay drive capacity: 700mA maximum across both slots
• Display: Dual-line vacuum fluorescent (20-character line 1, 32-character line 2)
• IEEE-488.2 and SCPI programming
– Typical Applications
Automated test systems, matrix switching networks, data acquisition systems, and process control requiring multi-signal routing with galvanic isolation and low crosstalk.
– Compatibility & Integration
Programmable via IEEE-488.2 and SCPI commands. Accommodates interchangeable switch and control cards (DC, RF, optical types) for application-specific configuration.
