B&K Precision 1856D - Manual - Manual (Page 8)

8
 Resolution and Number of Displayed Digits
Time Base Selector INT EXT INT EXT INT EXT INT EXT
Gate Time 0.01S 0.1S 1S 10S
Number Of
Displayed Digits
5 6 6 7 7 8 8 9
Frequency (Input C) RESOLUTION
80 MHz-999 MHz 10 KHz 1 KHz 1 KHz 100 Hz 100 Hz 10 Hz 10 Hz 1 Hz
1 GHz-3.7 GHz 100 KHz 10 KHz 10 KHz 1 KHz 1 KHz 100 Hz 100 Hz 10 Hz
(Table 2)
 TIME BASE CHARACTERISTICS
 TYPE:
TCO (Temperature Controlled Oscillator)
 FREQUENCY:
10.000000 MHz
 STABILITY: ±1 PPM (±1 count)
 LINE VOLTAGE STABILITY:
Less than ± 1 PPM with ± 10% line voltage variation
 TEMPERATURE STABILITY:
±5 PPM from 0°C to 50°C
 MAX. AGING RATE: ±5 PPM/year
 INT. STD. OUT:
10 MHz (Internal Standard Frequency Output)
LEVEL: 1 V p-p or more. TTL (10TTL)
CAPACITANCE: 15pF
 EXT. STD. IN:
10 MHz (External Standard Frequency Input)
LEVEL: 1.5Vrms to 5Vrms
IMPEDANCE: Approx. 600

 DISPLAY CHARACTERISTICS
 DISPLAY:
Nine Digit 0.56" LED with M (Mega) or K (Kilo) Hz; nano, micro,
or milli (n/u/m) Sec.; GT (GATE TIME); H (HOLD); and OF
(OVERFLOW) indicators. FUNCTION and GATE TIME are