I have two sets of these modules. They came with some other BAK equipment which has been sold. They are believed to be in good working order, however they are almost 30 years old.
According to the manufacturer:
AD-1
Specifications:
Input Resistance 100 kilohms
Input Coupling AC
Input Dynamic Range 6 volts peak to peak maximum
Output Resistance 100 ohms X1 and X2 outputs
Bandwidth 4 Hz to 10 kHz (3 db down)
Cut-Off Slope Low freq. 18 db/octave, High freq. 42 db/octave
Signal Polarity Non-inverted
Gain Unity
Delay 0.2 msec to 24 msec (X1 output), 0.4 msec to 48 msec (X2 output), (continuously variable)
Power Requirements +15 volts @ 20 ma, -15 volts @ 40 ma, +5 volts @ 40 ma
Size 2.8"w x 5.25"h x 7.25"d
Weight 1 lb.
DIS-1
Specifications:
Input Resistance: 10 kilohms
Input Coupling: AC
Input Dynamic Range: 8 volts peak to peak
Multiplexed Output Resistance: 100 ohms
All Other Outputs: TTL compatible
Signal Polarity: Same as input
Gain: Unity Bandwidth: 20 Hz to 20 kHz (3 db down)
Window Width: 20 microseconds
Window Delay: 0.05 msec to 5 msec (continuously adjustable) Window Height: Continuously adjustable
Trigger Threshold Level: Internal plus or minus along signal wave form or an external TTL pulse
Output Trigger Pulse: TTL UL -10 microsecond width
Output Acceptance Pulse:TTL compatible 0.3 millisecond width (internally adjustable)
Power Requirements: ±5 volts supplied by the Model RP-1 160 ma and -45 ma
Size: 2.8"w x 5.25"h x 7.25"d Weight: 1 lb
See http://www.bakelectronicsinc.com for additional information on this US manufacturer
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7 Day Return Policy. Customer must pay the return shipping costs when returning a product. If you find the item is not as described in the ad it may be returned for a purchase price refund. Generally, all of our items have an inspection warranty which kicks in upon delivery for a period of 7 to 14 days. It is not an operational warranty as most items sold on DOTmed require biomedical certification before use. If you require additional coverage please contact us prior to purchase.
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