From 56052b0da2e632f5efcfb52c590fc97b67e69754 Mon Sep 17 00:00:00 2001 From: Jacob Gilbert Date: Thu, 27 May 2021 07:48:47 -0600 Subject: [PATCH] Require both freq fields in annotations This fixes #71 for v1.0 and provides clarification that both frequency fields must be provided in annotations if either are. Signed-off-by: Jacob Gilbert --- sigmf-spec.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sigmf-spec.md b/sigmf-spec.md index 35435a7..c96dd3b 100644 --- a/sigmf-spec.md +++ b/sigmf-spec.md @@ -415,7 +415,9 @@ The `freq_lower_edge` and `freq_upper_edge` fields should be at RF if the feature is at a known RF frequency. If there is no known center frequency (as defined by the `frequency` field in the relevant `capture segment object`), or the center frequency is at baseband, the `freq_lower_edge` and `freq_upper_edge` -fields may be relative to baseband. +fields may be relative to baseband. It is required that both `freq_lower_edge` +and `freq_upper_edge` be provided, or neither; the use of just one field is not +allowed. ### Dataset Licensing