Keithley Instruments Inc. 776 225 MHz, 2 Ch Programmable Counter/ Timer
Feature:
No. Of Channels: 2ch
Frequency: 0Hz
Sensitivity: 50mVrms
The Model 776 Programmable Counter/Timer offers two independent input channels (A and B) for measuring frequencies up to 225MHz. The optional Model 776/2.4G version adds a third input channel (C) that allows measuring frequencies from 50MHz to 2.4GHz. The 776/2.4G version also includes a temperature compensated crystal oscillator (TCXO) time base for exceptional measurement stability, even in changing ambient conditions.
Choice of Time Bases
The standard 776 counter/timer employs an internal 10MHz crystal oscillator time base with 5ppm stability for both the A and B channels. In the 776/2.4G version, the TCXO provides a highly stable (<1ppm/month) time base for channels a, b, and c. alternatively, the timing for either version of the instrument can be referenced to an external time base input.
Thirteen Measurement Functions
The 776 may be triggered manually (with a button on the front panel), automatically, or via an external input. Users can specify theThe Model 776 Programmable Counter/Timer offers two independent input channels (A and B) for measuring frequencies up to 225MHz. The optional Model 776/2.4G version adds a third input channel (C) that allows measuring frequencies from 50MHz to 2.4GHz. The 776/2.4G version also includes a temperature compensated crystal oscillator (TCXO) time base for exceptional measurement stability, even in changing ambient conditions.
Choice of Time Bases
The standard 776 counter/timer employs an internal 10MHz crystal oscillator time base with 5ppm stability for both the A and B channels. In the 776/2.4G version, the TCXO provides a highly stable (<1ppm/month) time base for channels a, b, and c. alternatively, the timing for either version of the instrument can be referenced to an external time base input.
Thirteen Measurement Functions
The 776 may be triggered manually (with a button on the front panel), automatically, or via an external input. Users can specify the
13 Measurement Functions
Single Shot time Measurement
Averaged time measurement
Phase A to B
Ratio A/B or C/B
V Peak A
Imp: 100Mohm or 50 ohm, select
Atten: Manual & Auto
Totalize B
Gate Time
External Arming (Trigger)