Pulse Instruments PI-451

The Pulse Instruments PI-451 is a MOS/CCD driver plug-in for the TM500 system.

Manuals – Specifications – Links – Pictures

The PI-451 is described as a "MOS/CCD Driver", the PI-451A as a "Programmable Pulse Driver."

A TTL-level input pulse controls an output with programmable high and low voltages and transition times.

Key Specifications

Output high level	+25 V to –24 V open circuit, or +12.5 V to –12 V into 50 Ω
Output low level	+24 V to –25 V open circuit, or +12 V to –12.5 V into 50 Ω
Output swing	1 V min. to 30±3 V max. open circuit, or 0.5 V min. to 15±1.5 V max. into 50 Ω
Output level control	manual, voltage programming (1:1, offset ≤80 mV @ ×1 transition time), or (Opt.002) digital
Transition time	2 ns/V to 2 μs/V @ 25 V and 100 pF load, continuously variable in 3 ranges, independent leading and trailing edge controls
Trigger input	TTL level, 2−5 V into 50 Ω
Trigger output	TTL level, 3 V into 50 Ω, delayed 100 ns from input
Delay	15 ns or ≤100 ns to ≥100 μs from trigger output, 3 decade ranges + 10:1 variable
Pulse width	same as input, or ≤100 ns to ≥100 μs, 3 decade ranges + 10:1 variable
Max. frequency	10 MHz @ 20 V, 20 pF down to 4 MHz @ 25 V, 300 pF
Options	Opt. 002 – digitally programmable output voltage levels (12 bit parallel TTL), plus additional TTL clock input and a high level output on the rear interface

Rear interface

3A / 4A – mainframe +11.5 V common return = signal ground 21A – Output low level (connected to green or blue front panel banana jack) 22A – Output high level (connected to red front panel banana jack) 24A (23A GND) – Pulse output (parallel to front panel output unless disconnected via internal switch) 27A (26A GND) – Rear trigger input 25A – /PS Plugin select, must be 0 to load data 28A – /MS Mainframe select, must be 0 to load data Data format 000000000000 = +24.9875 V 011111111110 = +0.0122 V 011111111111 = 0.0 V 100000000000 = −0.0122 V 111111111111 = −25.00 V

3B / 4B – mainframe +11.5 V common return = signal ground 14B – Digital input bit 0 (LSB) 12.2 mV 15B – Digital input bit 1 16B – Digital input bit 2 17B – Digital input bit 5 18B – Digital input bit 4 19B – Digital input bit 6 20B – Digital input bit 11 (sign) 1=negative 0=positive 21B – Digital input bit 7 22B – Digital input bit 10 (MSB) 12.5 V 23B – Digital input bit 3 24B – Digital input bit 8 25B – Digital input bit 9 26B – DS Data strobe, positive edge to load data 27B – Digital GND 28B – LS Level select, 0 = select DAC for low output level, 1 = select DAC for high output level

Pictures

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  PI-451

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  PI-451 Inside

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  PI-451A front

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  PI-451A left

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  PI-451A right

Manufacturer

Pulse Instruments

For driving FPA and CCD clocks in a multi-channel system, the modern equivalents from Pulse Instruments are:

• PI-41401 Programmable Clock Driver Card, −5 to +8 V, 9 V_p-p
• PI-42460 Programmable Clock Driver Card, ±18 V, 20 V_p-p

For general-purpose pulse driving on a standalone basis, the modern equivalent is:

• PRL-470B, Variable Output Pulse Driver, −6 to +10 V, 16 V_p-p