Atec 4650A User Manual
VALHALLA SCIENTIFIC, INC.
4650A PROGRAMMABLE DIGITAL IGNITER TESTER
SPECIFICATIONS
_______________________________________________________________
Accuracy
MODEL 4650A ACCURACY SPECIFICATIONS
Rng # Maximum
Input
1
2
3
4
5
6
7
8
Notes:
[1] Resolution is user-selectable. The maximum available resolution for each range is shown.
[2] Valid for inputs above 10% of the maximum input.
[3] Valid for inputs from 1% to 10% of the maximum input. Inputs less than 1% are not specified.
[4] Fail-safe current is 7.5mA on all ranges if range 1 is installed, otherwise 750µA all ranges.
2.49999Ω 10µΩ
24.9999Ω 100µΩ
249.999Ω 1mΩ
2.49999kΩ 10mΩ
24.9999kΩ 100mΩ
249.999kΩ 1Ω
2.49999MΩ 10Ω
24.99MΩ 10kΩ
Maximum1
Resolution
Accuracy
±0.015% of rng ±0.1% of range 5mA
±0.015% of rng ±0.1% of range
±0.015% of rng ±0.1% of range
±0.015% of rng ±0.1% of range
±0.015% of rng ±0.1% of range 500nA
±0.015% of rng ±0.1% of range 500nA
±0.5% of rng ±0.2% of range 50nA
±2% of rng ±0.2% of range 5nA
2
Accuracy 3 Test
4
Current
500µA
50µA
5µA
Operating Specifications
Compliance Voltage................................... Clamped at 50mV±5%(rngs 1-5) or 200mV±5%(rngs 6-8)
True Ohms Mode ...........................................................Pulsed test current available in ranges 1-4 only
CMRR......................................................................................................................... > 70dB @ 50-60Hz
NMRR......................................................................................................................... > 35dB @ 50-60Hz
Overload Protection................................................................................................. 100V
Valhalla Scientific, Inc.
4650A Specifications
all terminals
peak
Sample Rate...................................... 2 rdg/sec standard mode (1 rdg/sec in TrueΩ mode or 25MΩ rng)
Settling Time ..............................approximately 15 seconds (45 seconds in TrueΩ mode or 25MΩ rng)
Settling Indications................................................. display dims during settling, brightens after settling
4-Wire Lead Rejection: ......... 3ppm per % (% = lead+contact resistance ÷ unknown resistance x 100)
Interface: ................... IEEE-488 with subsets SH1 AH1 T6 TE0 L4 LE0 SR1 RL1 PP0 DC1 DT1 C0
Display Type.......................................................................................... 20 character vacuum fluorescent
Indicator Lamps.................................................. rectangular red and green light emitting diodes (LED)
Overrange Indication........................................ display shows "OVERRANGE" or "OPEN CIRCUIT"
Data Entry ................................................................27 key silicon rubber keyboard, or via the interface
Calibration Enable Switch ...........................................................front-mounted, screwdriver accessible
Input Connectors ...................................................................... front and rear low-thermal binding posts
Power Requirements
Power .............................................................................. powered from internal sealed lead-acid battery
Battery Endurance .......................................................... up to 4 hours continuous following full charge
Charging Time...............................................................min 10 hours to restore fully discharged battery
Charging Voltage .................................provided by AC line, 105-130VAC or 210-260VAC, 50-60Hz
Charging Mode................................... enabled by front switch or by a logic 0 (short) on rear terminals
Valhalla Scientific, Inc.
4650A Specifications
Loading...