Ballantine 6127B

Programmable 1Ghz

Oscilloscope Calibrator

This calibrator provides a wide range of functions allowing the callibration of scopes up to 1Ghz.   Although this unit provides many cal functions by itself.  Many options require specific heads not included.  Since this is a current product, these heads and operating manuals are easily obtained from Ballantine.

This unit is in good electrical and mechanical condition.  Although it does have a few scrapes and scratches on the case and a small crack in the front panel membrane which can be seen in the photos.


Product Summary

The BLI 6127B is an accurate and simple way to calibrate a wide variety of oscilloscopes from low frequency units to instruments bandwidths over 1 GHz. The 6127B provides a variety of signals of precise voltage, current, timing and waveshape. The 6127B can be operated manually or automatically using the IEEE-488 interface and Ballantines automated software SCOPE-CAL. Time saving controlls include computation of percent deviation, repeat step increment, self checking and warning of invalid entries.

Product Features

  • Maximum adaptability. Checks any scope from general purpose to advanced 1 GHz units.
  • Cuts calibration time and cost. Halves test time. Speeds throughput to 5 times when programmed.
  • Easy conversion to SCOPE-CALTM, Ballantine's Automated Oscilloscope Calibration Software
  • Over 300 free procedures
  • Manual or IEEE 488 GPIB operation.
  • User friendly P based panel computes calibration errors, self checks, flags invalid entries.

Product Specifications

Volts/Division Mode

Used for calibration of vertical display accuracy and attenuator compensation.

High Impedance Output (into 1 MW): ): ): ): Range: 40 V to 200 V in 1, 2, 5 steps with multiplier
Low Impedance Output (into 50 Low Impedance Output (into 50 Low Impedance Output (into 50 Low Impedance Output (into 50 W): ): Range: 40 V to 5 V in 1, 2, 5 steps with multiplier
Multiplier: 1, 2, 3, 4, 5, 6, 8, 10 divisions
Amplitude Accuracy: 0.25% of reading 1 V
Variable Amplitude Deviation: Variable Range of 9.9%. Digital deviation meter provides resolution of 0.1%.
Waveforms: Selectable outputs for all output levels. Square wave of 10 Hz, 100 Hz, 1 kHz, and 10 kHz. DC positive polarity. DC negative polarity.

Time/Division Mode

Real Time Markers for calibration of oscilloscope timebase accuracy and checking high frequency triggering.
Output Marker: 500 psec to 5 sec in 1, 2, 5 sequence
Marker Amplitude:
1 V pk into 50 W, 2 nsec to 5 sec >350 mV pk-to-pk at 1 nsec (1 GHz)
>100 mV pk-to-pk at 500 psec (2 GHz)
Accuracy: 0.005% of reading 10 psec (2 nsec to 5 sec), 0.005% of reading 20 psec (0.5 nsec to 1 sec)
Variable Time Deviation: Variable deviation range of 9.9% for marker and trigger period. Digital deviation meter provides resolution of 0.1%.


Timing Reference

Internal Time Base: An internal temperature compensated 10 MHz crystal oscillator provides accuracy of 0.002% and long term stability to better than 1 part in 10-5 per month after 72 hours and temperature stability of better than 1 part in 10-5 from +4C to +40C after a one hour warm-up.
External Timing Reference: Input: 10 MHz, Input Amplitude: 1 V to 10 V rms., Source Impedance: 50

Milliamperes/Division (Current Amplitude Mode)

Used to test current probe accuracy through front panel current loop.
Current Ranges: 1 mA to 100 mA in 1, 2, 5 steps with multiplier
Multiplier: 1, 2, 3, 4, 5, 6, 8, 10 divisions
Accuracy: 0.25% of reading 2 A
Frequency: DC: Squarewave of 10 Hz, 100 Hz, 1 kHz, and 10 kHz

Calibrator Mode

For use with 61272C Amplitude Comparator Head to test accuracy of oscilloscope's internal calibrator signal.
Amplitude Range: High Impedance: 40 V to 200 V in 1, 2, 5 sequence
Low Impedance (50 Low Impedance (50
W): ): Low Impedance (50 Low Impedance (50 W): ): ): ): 40 V to 5 V in 1, 2, 5 sequence
Accuracy (Amplitude): 0.25% of reading 1V
Accuracy of 50 Accuracy of 50
W Impedance: Impedance: 1%
Frequency of UUT Calibrator Waveform: DC to >2 MHz
Frequency of Calibration Waveform: 1 kHz squarewave
Comparison Mode: Compares output of Volts/Div generator and calibrator of scope under test. Comparison is switched automatically at 100 Hz or alternate on command.

Low Distortion Pulse Mode

Used to test oscilloscope attenuator compensation and input amplifier response.

  Low Edge (Amplitude Mode) High Edge (Amplitude Mode)
Range 20 mV to 1 V pk-to-pk in 1, 2, 5 steps 1.2 V to 100 V pk-to-pk in 1, 2, 5 steps
Multiplier 1, 2, 3, 4, 5, 6, 8, 10 divisions 1, 2, 3, 4, 5, 6, 8, 10 divisions
Risetime 1.3 nsec from 100 mV to 1 V into 50 W

1.6 nsec from 20 mV to 50 mV into 50 W

<100 nsec
Load Resistance n/a 1 MW load shunted by less than 18 pF
Polarity Positive transition from negative voltage to ground Positive transition from negative voltage to ground
Output Impedance 50 W 1% n/a
Waveshape Squarewave with 50% duty cycle Squarewave with 50% duty cycle. Leading edge aberrations within 2% of pk-to-pk.
Aberrations 2% of squarewave amplitude after first 1.5 nsec 2% of squarewave amplitude after first 1.5 nsec
Long Term Flatness Droop and tilt within 0.5% Droop and tilt within 0.5% after first 500 nsec
Frequency 10 Hz to 1 MHz to 6 decade steps 10 Hz to 100 kHz in 5 decade steps

Fast Rise Pulse

The Fast Rise Pulse Head provides a fast rise, low distortion pulse used for testing high bandwidth vertical amplifiers.
Amplitude: 1.1 V pk-to-pk, 5%, adjustable 10% into 50
Risetime: <180 psec into 50
Waveshape: Output is positive squarewave 50% duty cycle. Leading edge aberrations are less than 2% of amplitude not exceeding 4% pk-to-pk.
Frequency: 10 Hz to 1 MHz in 6 decade steps

Trigger Output

Slaved to frequency of selected mode and marker. Time/Division Mode, trigger rate fixed at 100 nsec for marker outputs of 100 nsec and faster.
Modes: OFF, x1, +10, +100
1 V into 50 W

Bus Address

Selected by switch accessible on rear panel and displayable on front panel.


100/120/220/240 V ac, 10%, 50 to 400 Hz, single phase sinusoidal, ~80 W.


Meets or exceeds MIL-T-28800, Type III, Class 5 requirements, including Reliability and Maintainability. Satisfies EMI requirements per MIL-STD-461. CE-03, CS01, CS06, RE02, RE03.
Temperature: Operating: 0C to 50C, Storage: -55C to 75C
Humidity: Operating: 0 to 95% RH to 40C, Storage: 0 to 95% RH to 50C
Altitude: Operating: 3 km (10,000 ft), Storage: 15 km (50,000 ft)
Vibration: Operating: 0.015 inches pk-to-pk, 10 Hz to 55 Hz
Shock: Non-Operating: 30 G, 1/2 sine

Size & Weight

133mm (5.22 in) H x 425mm (16.75 in) W x 484mm (19.1 in) D
Weight: 15.2 kg (33.5 lbs.); Shipping: 17.7 kg (39 lbs.)


As our many customers will attest, we will do our very best to resolve any customer problems.  But our official policy is: All items sold are guaranteed against D.O.A. only. All claims must be made within 3 days of receipt.   All warranties are void if the calibration / warranty seals are broken.  This warranty is void if the seals are broken.

Ascent Concepts and Technologies is a Research & Development Lab.  As a service to the companies and institutions we work with, we broker their excess equipment & acting as application specialists on their new equipment needs.  We are now offering quality used equipment to the public with the same level of professionalism and service.   Please feel free to email at or call Thomas @ 1-303-554-0307 with any Technical questions. Please feel free to email at or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions.   We make every effort to evaluate and guarantee our equipment.  Although we do not provide NIST traceable calibration, we do have in house calibration equipment and will make every effort to test and verify performance on equipment we sell.  However we do not warranty any items shipped outside the United States.  All equipment we sell comes with a three day right of return unless stated otherwise.

Shipping Policy

Buyer will pay $40.00 packing & shipping in Continental USA.  We will make every effort to ship within 24 hours of receipt of payment.  We ship with FedEx & UPS only. We will be glad to ship with other carriers using the purchasers shipping account.  Please contact us to make any special shipping arrangements. For shipping rate research, our shipping address is Boulder, CO USA ---- Zip Code is 80305.

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