Quick DC low Voltage DC tests against an AD584M (closest Reference to hand) as per my Agilent 34401A % deviation to the 34401A of 0.02% or better.
2.49905 2.4989
5.00021 5.0000
7.49955 7.498
10.00028 9.999
AC Voltage and Frequency Referenced to Agilent 34401a.
Mains Testing
Agilent 121GW
248.07 49.98 249.90 49.95 Hz
Feeltech Sig Gen (don't mention the war)
5V P-P (indicated) SINE used (1.7677 V rms)
5V P-P (indicated) Square wave used which is fairly clean and sharp under 1MHz
121GW 'Frequency Range' is shown not the dual scale value!
Rough test on Triangle showed reliable Frequency to 1Mhz and consistent Voltage to 100KhZ.
Indicated Agilent SINE 121GW SINE 121GW Square
50Hz 1.7992 50.002 1.8040 49.997 2.5513 49.997
100Hz 1.7996 100.004 1.8054 99.995 2.5518 99.995
500Hz 1.7998 500.022 1.8049 499.98 2.5461 499.98
1KHz 1.7994 1.0000 1.8109 999.96 2.5521 999.95
10KHz 1.7953 10.0005 1.8408 9.9996 2.6186 9.9995
50KHz 1.7920 50.0022 1.8394 49.998 2.6634 49.998
100Khz 1.7914 100.005 1.8590 99.996 2.6617 99.995
500Khz 1.7745 500.023 .6801 499.98 0.8457 499.98
1MHz 1.8453 1.00005 0.0000 999.95 0.0000 999.96
These tests are really done for me so I have an idea when to break out the Agilent over the 121GW.
First impressions are good, Auto Range is a little slower than I would like but
so far.